In 2012, Dr. Doris Derwen Ling, 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 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2012 were preventive care, vaccines, lab tests and blood draw.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	12
doctor visit	260
lab tests	21
preventive care	46
vaccines	46

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2013 were preventive care, vaccines, blood draw and lab tests.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	37
doctor visit	254
lab tests	23
preventive care	47
vaccines	47

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	30
Female	80

**Ethnicity**
Non-Hispanic White	85
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	29
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2013

Hypertension	56
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	16
Depression	17
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2014 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

doctor visit	254
lab tests	21
preventive care	31
vaccines	31

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	33
Female	79

**Ethnicity**
Non-Hispanic White	84
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	64
From 75 to 84	28
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2014

Hypertension	63
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	18
Depression	12
Chronic Kidney Disease	13
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	20
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2015 were preventive care and vaccines.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

doctor visit	345
preventive care	42
vaccines	42

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	72
Female	186

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	60
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2015

Hypertension	68
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	16
Depression	18
Chronic Kidney Disease	19
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	27
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2016 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

doctor visit	386
lab tests	15
preventive care	42
vaccines	42

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	37
Female	103

**Ethnicity**
Non-Hispanic White	104
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	35
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2016

Hypertension	69
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	19
Depression	19
Chronic Kidney Disease	26
Asthma	13
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2017 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	70
doctor visit	376
lab tests	13
preventive care	36
vaccines	36

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	43
Female	107

**Ethnicity**
Non-Hispanic White	110
Black	0
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	89
From 75 to 84	36
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2017

Hypertension	72
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	23
Depression	15
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	8
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	8
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2018 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	108
doctor visit	338
preventive care	35
vaccines	35

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	46
Female	99

**Ethnicity**
Non-Hispanic White	113
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2018

Hypertension	70
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	17
Depression	15
Chronic Kidney Disease	19
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	23
Dementia	10
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2019 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	132
doctor visit	333
preventive care	21
vaccines	21

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	40
Female	95

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	83
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2019

Hypertension	63
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	20
Depression	18
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	24
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2020 were blood draw.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	112
doctor visit	284

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	40
Female	93

**Ethnicity**
Non-Hispanic White	104
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	42
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2020

Hypertension	66
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	19
Depression	16
Chronic Kidney Disease	22
Asthma	8
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	26
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2021 were blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	141
doctor visit	351
preventive care	16
vaccines	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	43
Female	110

**Ethnicity**
Non-Hispanic White	116
Black	0
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	83
From 75 to 84	53
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2021

Hypertension	68
High Cholesterol	73
Stroke	0
Ischemic Heart Disease	18
Depression	16
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	17
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX during 2022 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

blood draw	152
diabetes management	13
doctor visit	413
lab tests	13
preventive care	33
vaccines	20

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	45
Female	118

**Ethnicity**
Non-Hispanic White	121
Black	13
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	57
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	13
Depression	10
Chronic Kidney Disease	13
Asthma	9
Osteoperosis	23
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Doris Derwen Ling, MD for Medicare patients.

The highest averages for the top procedures that Dr. Doris Derwen Ling, MD treated as a family medicine practitioner in San Antonio, TX were blood draw, preventive care, vaccines and lab tests.

blood draw	95
diabetes management	13
doctor visit	326
lab tests	17
preventive care	34
vaccines	33

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Doris Derwen Ling, MD.

**Gender**
Male	39
Female	97

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	102
Native American / Alaskan Native	0
Hispanic	15
Other	0

**Age**
75 to 84	38
85 and over	0
Less than 65	0
65 to 74	78

Average of Total of Conditions of Medicare patients treated by Dr. Doris Derwen Ling, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Doris Derwen Ling, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	60
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	16
Depression	14
Chronic Kidney Disease	17
Asthma	3
Osteoporosis	6
Heart Failure	1
Chronic Obstructive Pulmonary Disease	2
Diabetes	22
Atrial Fibrillation	1
Dementia	0
Cancer	4

Education & Training

She completed residency at Christus Spohn Health System. She is certified by the American Board of Family Medicine and has a state license in Texas.

Residency: Christus Spohn Health System

Board Certification: American Board of Family Medicine

Licensed In: Texas

Ratings & Reviews

Dr. Doris Derwen Ling, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Doris Derwen Ling, MD from all over the web to help you find the right in San Antonio, TX.

Overall Rating

(5 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-10-16

Patient verified via Press Ganey

I have been a patient of Dr. Ling's for many years. She is an excellent practitioner, attentive, and knowledgeable. She goes out of her way to meet my needs.

Overall Rating: 5.0 2025-12-06

Patient verified via Press Ganey

Dr Ling has been my PCP for over 20 years. I stay because of her concern for my care, sound judgement, etc.

Overall Rating: 5.0 2025-06-07

Patient verified via Press Ganey

Dr. Ling took time with each of my questions.

Overall Rating: 5.0 2025-08-27

Patient verified via Press Ganey

Dr. Ling and the Staff are doing a great job

Overall Rating: 5.0 2025-07-05

Patient verified via Press Ganey

Dr Ling explained everything very clearly...

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$474 FARXIGA $181	CRESTOR $94	BYDUREON WEEKLY $34	BREZTRI $30	DUTOPROL $27	Other $109
AbbVie Inc.	$313 UBRELVY $156	VRAYLAR $69	QULIPTA $59	Synthroid $29
Novo Nordisk Inc	$232 Victoza $138	RYBELSUS $17	Wegovy $17	Saxenda $15	$44
Amgen Inc.	$161 Prolia $107	Repatha $54
Merck Sharp & Dohme Corporation	$160 PNEUMOVAX 23 $61	NON-PRODUCT $52	BELSOMRA $13	GARDASIL9 $13	JANUMET XR $11	Other $11
Other	$1,283 Vascepa $110	TRELEGY ELLIPTA $76	Belviq $56	VIIBRYD $54	INVOKANA $50	Other $937

**Types of Payments**
Food and Beverage	$2,583
Education	$40

Biography

Dr. Doris Ling specializes in family medicine and practices in San Antonio, TX. Before completing her residency at Christus Spohn Health System, Dr. Ling attended medical school at the University of Texas Health Science Center at San Antonio, School of Medicine. Patients rated her highly, giving her an average of 5.0 stars (out of 5). According to Doctor.com, new patients are welcome to contact Dr. Ling's office in San Antonio, TX.