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Home > TX Providers > Family Physicians & Family Medicine Specialists

Dr. Gregory L. Colon, MD

Accepting New Patients

(25 Ratings)

Specializes in: Family Medicine

Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine (1991)

151 SOUTH STAGECOACH TRAIL SUITE 105
SAN MARCOS, TX 78666

(737) 213-1271

Dr. Gregory L. Colon, MD is a family medicine practitioner in SAN MARCOS, TX specializing in family medicine. He graduated from Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine in 1991 and has 35 years of experience.

Office Locations

151 SOUTH STAGECOACH TRAIL SUITE 105
SAN MARCOS, TX 78666

open_in_new

580 S Denton Tap Road
Coppell, TX 75019

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Noteworthy Medicare Patient Procedures Performed by Dr. Gregory L. Colon, MD in 2024

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 10%

By Affordability:

blood draw

blood draw for lab tests

phlebotomy for lab tests

venipuncture

In 2024, Dr. Gregory L. Colon, MD had a list price for blood draw, blood draw for lab tests, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Texas. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

blood draw

phlebotomy for lab tests

urinalysis

In 2012, Dr. Gregory L. Colon, MD performed more blood draw, phlebotomy for lab tests, and urinalysis procedures for Medicare patients than 75% of providers in related specialties within Texas.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2012 were lab tests, blood draw, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	48
doctor visit	150
lab tests	52
thoracic (chest) imaging	19
X-rays	19

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2013 were lab tests, blood draw, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	53
doctor visit	158
lab tests	54
thoracic (chest) imaging	18
X-rays	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	45
Female	42

**Age**
From 65 to 74	64
From 75 to 84	12
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2013

Hypertension	52
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	22
Depression	13
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2014 were lab tests, blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	52
doctor visit	176
lab tests	83
preventive care	19
thoracic (chest) imaging	15
vaccines	19
X-rays	15

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	59
Female	38

**Age**
From 65 to 74	68
From 75 to 84	18
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2014

Hypertension	47
High Cholesterol	41
Stroke	0
Ischemic Heart Disease	24
Depression	0
Chronic Kidney Disease	15
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	14
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2015 were lab tests, X-rays, thoracic (chest) imaging and preventive care.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

doctor visit	209
lab tests	69
preventive care	14
thoracic (chest) imaging	31
vaccines	14
X-rays	31

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	112
Female	96

**Age**
From 65 to 74	136
From 75 to 84	48
85 and over	0
Less than 65	24

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2015

Hypertension	39
High Cholesterol	24
Stroke	0
Ischemic Heart Disease	18
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	13
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2016 were lab tests, X-rays, thoracic (chest) imaging and preventive care.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

doctor visit	288
lab tests	53
preventive care	32
thoracic (chest) imaging	49
vaccines	32
X-rays	49

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	94
Female	77

**Ethnicity**
Non-Hispanic White	158
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2016

Hypertension	47
High Cholesterol	27
Stroke	0
Ischemic Heart Disease	19
Depression	11
Chronic Kidney Disease	8
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2017 were blood draw.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	16
doctor visit	205

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	55
Female	49

**Ethnicity**
Non-Hispanic White	87
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	49
From 75 to 84	30
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2017

Hypertension	70
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	35
Depression	16
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2018 were blood draw, lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	68
diabetes management	28
doctor visit	458
lab tests	50
preventive care	40
vaccines	12

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	88
Female	93

**Ethnicity**
Non-Hispanic White	147
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	95
From 75 to 84	43
85 and over	19
Less than 65	24

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2018

Hypertension	69
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	34
Depression	18
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	31
Dementia	13
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2019 were lab tests, preventive care, blood draw and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	64
diabetes management	59
doctor visit	602
lab tests	119
preventive care	91
vaccines	32

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	100
Female	106

**Ethnicity**
Non-Hispanic White	171
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	48
85 and over	21
Less than 65	20

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2019

Hypertension	70
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	35
Depression	17
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	26
Dementia	13
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2020 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	125
diabetes management	71
doctor visit	541
lab tests	136
preventive care	108
vaccines	25

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	84
Female	84

**Ethnicity**
Non-Hispanic White	137
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	97
From 75 to 84	38
85 and over	13
Less than 65	20

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2020

Hypertension	71
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	35
Depression	21
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	27
Dementia	15
Cancer	7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2021 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	87
diabetes management	67
doctor visit	489
lab tests	171
preventive care	81
vaccines	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	93
Female	83

**Ethnicity**
Non-Hispanic White	145
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	47
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2021

Hypertension	61
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	28
Depression	19
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	28
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2022 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	123
diabetes management	67
doctor visit	556
lab tests	172
preventive care	96
vaccines	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	100
Female	79

**Ethnicity**
Non-Hispanic White	153
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	53
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2022

Hypertension	73
High Cholesterol	61
Stroke	7
Ischemic Heart Disease	23
Depression	17
Chronic Kidney Disease	8
Asthma	11
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	9
Chronic Obstructive Pulmonary Disease	14
Diabetes	25
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2023 were blood draw, lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	180
diabetes management	48
doctor visit	530
lab tests	139
preventive care	81
vaccines	33

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	104
Female	90

**Ethnicity**
Non-Hispanic White	169
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	59
85 and over	12
Less than 65	18

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2023

Hypertension	64
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	21
Depression	12
Chronic Kidney Disease	7
Asthma	8
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	7
Chronic Obstructive Pulmonary Disease	12
Diabetes	21
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX during 2024 were blood draw, lab tests, preventive care and diabetes management.

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

blood draw	200
diabetes management	60
doctor visit	608
lab tests	150
preventive care	87
vaccines	27

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Male	128
Female	110

**Ethnicity**
Non-Hispanic White	200
Black	0
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	62
85 and over	18
Less than 65	23

Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD in 2024

Hypertension	64
High Cholesterol	62
Stroke	8
Ischemic Heart Disease	20
Depression	13
Chronic Kidney Disease	9
Asthma	6
Osteoperosis	5
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Gregory L. Colon, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory L. Colon, MD treated as a family medicine practitioner in SAN MARCOS, TX were lab tests, blood draw, preventive care and diabetes management.

blood draw	92
diabetes management	57
doctor visit	382
lab tests	104
preventive care	64
thoracic (chest) imaging	26
vaccines	22
X-rays	26

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Gregory L. Colon, MD.

**Gender**
Female	72
Male	81

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	105
Native American / Alaskan Native	0
Hispanic	2
Other	0

**Age**
75 to 84	37
85 and over	6
Less than 65	9
65 to 74	91

Average of Total of Conditions of Medicare patients treated by Dr. Gregory L. Colon, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Gregory L. Colon, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	55
High Cholesterol	46
Stroke	1
Ischemic Heart Disease	24
Depression	12
Chronic Kidney Disease	13
Asthma	4
Osteoporosis	2
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	20
Atrial Fibrillation	5
Dementia	4
Cancer	5

Education & Training

Dr. Gregory L. Colon, MD graduated from Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine in 1991. He completed residency at Exempla Saint Joseph Hospital, Denver. He is certified by the American Board of Family Medicine and has a state license in Texas.

Medical School: Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine (1991)

Residency: Exempla Saint Joseph Hospital, Denver

Board Certification: American Board of Family Medicine

Licensed In: Texas

Ratings & Reviews

Dr. Gregory L. Colon, MD has an exceptional overall rating with an average of 4.66 out of 5 stars based on 25 ratings. We collect ratings and reviews of Dr. Gregory L. Colon, MD from all over the web to help you find the right in SAN MARCOS, TX.

4.66

Overall Rating

(25 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2025-11-17

Been seeing him for over 6yrs. He’s awesome, personable and a great doctor!

Overall Rating: 2.0 2024-08-22

I used to think Dr. Colon was a good doctor to see for all of my medical concerns and questions.

Today was the day I realized I had to let others seeking a provider know how he really is as a doctor. Whenever I go to see him, it seems like I'm usually waiting about, at least, 15 minutes before he comes in to my room to see me at his office. He will go over everything you write on your paperwork, but he doesn't stop to take the time to listen to you. And when he does, he has to ask you multiple times to remind him what you went over with him. He also lacks bedside manner, when he asks about your health concerns. He rushes over everything you tell him, and seems to have little sympathy, from my perspective, if you have something that is making you feel unwell. I want to say that a lot of this isn't completely his fault, as his office might be overbooking him with patients due to the nature of his work.

But I'm sorry to say, whether it's because of the clinic he works in's fault, or his personality is just the way it is, his work ethic as a primary care provider has been lacking more and more over the time I've been seeing him.

If you don't mind a doctor who will rush through what your medical concerns are, and not have him ask for details to see the bigger picture to find a way to treat your aliments properly, be my guest, and pick him as your provider.

As for me, I'll be looking for a new provider who will hear me out and not make me feel like Alice chasing down the white rabbit.

Reviews From Around The Web

Overall Rating: 5.0 2025-12-28

Patient verified via Press Ganey

Dr. Colon checked me like normal. He talks to me very professional but in plain English and makes me feel like he cares for his patients. He always answers all my questions we always have good conversation. I drive a long way to see him because I feel he's a great doctor.

Overall Rating: 5.0 2025-10-27

Patient verified via Press Ganey

Dr Colon is an excellent physician that communicates very well with his patients. He explained the best form of treatment for a fairly severe case of Poison Ivy. I felt better in 24 hrs !

Overall Rating: 5.0 2025-08-21

Patient verified via Press Ganey

We trust Dr. Colon with whole family teens to seniors. He has developed a relationship with my teen so they feel comfortable talking to him about anything.

Overall Rating: 5.0 2025-11-07

Patient verified via Press Ganey

Dr. Colon was easy to talk to, he did not rush but listened to my concerns.

Overall Rating: 5.0 2025-10-11

Patient verified via Press Ganey

Always good experience with Dr Colon and staff

Overall Rating: 5.0 2026-02-12

Patient verified via Press Ganey

So glad to have Dr. Colon as my physician.

Overall Rating: 5.0 2025-11-12

Patient verified via Press Ganey

Dr. Colon is always kind and professional.

Overall Rating: 5.0 2026-04-05

Patient verified via Press Ganey

Very caring physician

General Payments

These charts describe general payments received by Dr. Gregory L. Colon, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$983 FARXIGA $315	SYMBICORT $225	BYDUREON WEEKLY $144	CRESTOR $124	ONGLYZA $98	Other $78
Takeda Pharmaceuticals America, Inc.	$613 Brintellix $196	Trintellix $181	Dexilant $115	AMITIZA $69	Kazano $33	Other $19
Merck Sharp & Dohme Corporation	$609 JANUMET XR $212	DULERA $129	BELSOMRA $117	NON-PRODUCT $41	GARDASIL9 $41	Other $69
Daiichi Sankyo Inc.	$515 Benicar $251	Tribenzor $94	Azor $72	Welchol $59	Effient $26	Other $12
AbbVie, Inc.	$427 Androgel $335	Synthroid $79	$13
Other	$3,937 VYVANSE $292	Repatha $278	Vesicare $208	Vascepa $197	TOUJEO $186	Other $2,777

**Types of Payments**
Food and Beverage	$7,048
Education	$22
Gift	$14

Biography

Dr. Gregory Colon's specialty is family medicine. Dr. Colon studied medicine at Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine. He trained at Exempla Saint Joseph Hospital, Denver for his residency. Patient reviews placed him at an average of 4.5 stars (out of 5). His practice in SAN MARCOS, TX is open to new patients as reported by Doctor.com.