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Home > OK Providers > Allergists & Immunologists

Dr. Gregory Martin Metz, MD

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Specializes in: Allergy & Immunology

University of Oklahoma College of Medicine

750 Ne 13th Street Third Floor
Oklahoma City, OK 73104

(405) 235-0040

Dr. Gregory Martin Metz, MD is an allergist and immunologist in Oklahoma City, OK specializing in allergy & immunology. He graduated from University of Oklahoma College of Medicine. Dr. Gregory Martin Metz, MD is affiliated with Mercy Hospital Oklahoma City and Mercy Health System.

Office Locations

Mercy Health System

750 Ne 13th Street Third Floor
Oklahoma City, OK 73104

(405) 235-0040

(405) 272-4027

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Noteworthy Medicare Patient Procedures Performed by Dr. Gregory Martin Metz, MD in 2024

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

Top 5%

By Affordability:

intradermal allergy test

In 2024, Dr. Gregory Martin Metz, MD had a list price for intradermal allergy test that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Oklahoma. 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 10%

By Volume:

subcutaneous allergen immunotherapy

In 2024, Dr. Gregory Martin Metz, MD performed more subcutaneous allergen immunotherapy (allergy shots) procedures for Medicare patients than 90% of providers in related specialties within Oklahoma.

Top 25%

By Volume:

percutaneous allergy test

By Affordability:

allergen immunotherapy

immunotherapy

injections

subcutaneous allergen immunotherapy

In 2012, among providers in related specialties within Oklahoma, Dr. Gregory Martin Metz, MD performed more percutaneous allergy test procedures for Medicare patients than 75% of them and he also had a list price for allergen immunotherapy, immunotherapy, injections, and subcutaneous allergen immunotherapy (allergy shots) that was lower than the list prices billed to Medicare by 75% of them. 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. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2012 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	1372
CT scan	14
doctor visit	129
immunotherapy	134
injections	134
minimally invasive procedures	1372
skin testing	1372

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2013 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	2010
doctor visit	185
immunotherapy	1054
injections	1054
minimally invasive procedures	2010
skin testing	2010
thoracic (chest) imaging	12
X-rays	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	67
Female	157

**Ethnicity**
Non-Hispanic White	195
Black	15
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	44
85 and over	12
Less than 65	39

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2013

Hypertension	55
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	24
Depression	22
Chronic Kidney Disease	13
Asthma	25
Osteoperosis	8
Atrial Fibrilation	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	11
Diabetes	21
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2014 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	2026
doctor visit	204
immunotherapy	1344
injections	1344
minimally invasive procedures	1913
pulmonary testing	12
skin testing	2026
thoracic (chest) imaging	13
X-rays	13

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	73
Female	156

**Ethnicity**
Non-Hispanic White	201
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	53
85 and over	15
Less than 65	36

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2014

Hypertension	55
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	26
Depression	21
Chronic Kidney Disease	13
Asthma	21
Osteoperosis	6
Atrial Fibrilation	0
Heart Failure	8
Chronic Obstructive Pulmonary Disease	11
Diabetes	18
Dementia	0
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2015 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	3384
doctor visit	280
immunotherapy	1607
injections	1607
minimally invasive procedures	2546
preventive care	14
pulmonary testing	34
skin testing	3384
vaccines	14

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	224
Female	440

**Ethnicity**
Non-Hispanic White	582
Black	36
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	386
From 75 to 84	156
85 and over	34
Less than 65	88

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2015

Hypertension	60
High Cholesterol	48
Stroke	3
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	15
Asthma	28
Osteoperosis	5
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	22
Dementia	4
Cancer	4

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2016 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	7079
CT scan	16
doctor visit	432
immunotherapy	2106
injections	2106
minimally invasive procedures	5888
preventive care	19
pulmonary testing	16
skin testing	7079
vaccines	19

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	161
Female	348

**Ethnicity**
Non-Hispanic White	443
Black	38
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	325
From 75 to 84	106
85 and over	21
Less than 65	57

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2016

Hypertension	63
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	17
Asthma	33
Osteoperosis	5
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	13
Diabetes	21
Dementia	4
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2017 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	6820
doctor visit	438
immunotherapy	2571
injections	2571
minimally invasive procedures	5383
skin testing	6820

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	174
Female	402

**Ethnicity**
Non-Hispanic White	506
Black	39
Hispanic	0
Asian	0
Other	0
Native American	11

**Age**
From 65 to 74	344
From 75 to 84	144
85 and over	19
Less than 65	69

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2017

Hypertension	66
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	31
Depression	24
Chronic Kidney Disease	22
Asthma	32
Osteoperosis	8
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	4
Cancer	6

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2018 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	4655
doctor visit	350
immunotherapy	1840
injections	1840
minimally invasive procedures	3555
pulmonary testing	11
sinus imaging	13
skin testing	4655
X-rays	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	151
Female	295

**Ethnicity**
Non-Hispanic White	392
Black	23
Hispanic	0
Asian	0
Other	0
Native American	14

**Age**
From 65 to 74	287
From 75 to 84	95
85 and over	12
Less than 65	52

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2018

Hypertension	66
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	32
Depression	26
Chronic Kidney Disease	22
Asthma	33
Osteoperosis	7
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	14
Diabetes	26
Dementia	4
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2019 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	5521
doctor visit	430
immunotherapy	1885
injections	1885
minimally invasive procedures	4352
pulmonary testing	22
sinus imaging	23
skin testing	5521
X-rays	23

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	174
Female	347

**Ethnicity**
Non-Hispanic White	458
Black	25
Hispanic	0
Asian	0
Other	0
Native American	20

**Age**
From 65 to 74	327
From 75 to 84	123
85 and over	13
Less than 65	58

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2019

Hypertension	64
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	30
Depression	24
Chronic Kidney Disease	21
Asthma	32
Osteoperosis	9
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	3
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2020 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	4192
doctor visit	437
immunotherapy	1378
injections	1378
minimally invasive procedures	3118
sinus imaging	18
skin testing	4192
X-rays	18

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	142
Female	325

**Ethnicity**
Non-Hispanic White	409
Black	27
Hispanic	0
Asian	0
Other	0
Native American	13

**Age**
From 65 to 74	284
From 75 to 84	106
85 and over	16
Less than 65	61

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2020

Hypertension	63
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	32
Depression	26
Chronic Kidney Disease	21
Asthma	34
Osteoperosis	7
Atrial Fibrilation	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2021 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	4022
doctor visit	393
immunotherapy	1569
injections	1569
minimally invasive procedures	3221
sinus imaging	12
skin testing	4022
X-rays	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	135
Female	278

**Ethnicity**
Non-Hispanic White	363
Black	22
Hispanic	0
Asian	0
Other	0
Native American	11

**Age**
From 65 to 74	231
From 75 to 84	118
85 and over	21
Less than 65	43

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2021

Hypertension	66
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	29
Depression	29
Chronic Kidney Disease	24
Asthma	35
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	14
Diabetes	24
Dementia	3
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2022 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	4314
doctor visit	401
immunotherapy	2055
injections	2055
minimally invasive procedures	3184
skin testing	4314

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	136
Female	234

**Ethnicity**
Non-Hispanic White	334
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	113
85 and over	17
Less than 65	35

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2022

Hypertension	71
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	27
Depression	23
Chronic Kidney Disease	14
Asthma	42
Osteoperosis	15
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	16
Diabetes	27
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2023 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	4288
doctor visit	380
immunotherapy	2336
injections	2336
minimally invasive procedures	3215
pulmonary testing	12
skin testing	4288

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	116
Female	207

**Ethnicity**
Non-Hispanic White	279
Black	20
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	190
From 75 to 84	92
85 and over	15
Less than 65	26

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2023

Hypertension	73
High Cholesterol	73
Stroke	5
Ischemic Heart Disease	28
Depression	19
Chronic Kidney Disease	16
Asthma	39
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	12
Chronic Obstructive Pulmonary Disease	17
Diabetes	22
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK during 2024 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

allergy testing	3839
doctor visit	459
immunotherapy	3233
injections	3233
minimally invasive procedures	3463
skin testing	3839

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	202
Female	384

**Ethnicity**
Non-Hispanic White	531
Black	21
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	352
From 75 to 84	178
85 and over	15
Less than 65	41

Conditions of Medicare patients treated by Dr. Gregory Martin Metz, MD in 2024

Hypertension	69
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	27
Depression	22
Chronic Kidney Disease	17
Asthma	47
Osteoperosis	18
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	16
Diabetes	26
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Gregory Martin Metz, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory Martin Metz, MD treated as an allergist and immunologist in Oklahoma City, OK were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

allergy testing	4117
CT scan	15
doctor visit	347
immunotherapy	1777
injections	1777
minimally invasive procedures	3324
preventive care	16
pulmonary testing	17
sinus imaging	16
skin testing	4117
thoracic (chest) imaging	12
vaccines	16
X-rays	15

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Gregory Martin Metz, MD.

**Gender**
Male	135
Female	274

**Ethnicity**
Black / African American	22
Asian / Pacific Islander	0
Non-Hispanic White	361
Native American / Alaskan Native	5
Hispanic	0
Other	3

**Age**
75 to 84	102
85 and over	16
Less than 65	46
65 to 74	245

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

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

Hypertension	59
High Cholesterol	51
Stroke	2
Ischemic Heart Disease	26
Depression	20
Chronic Kidney Disease	16
Asthma	30
Osteoporosis	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	12
Diabetes	21
Atrial Fibrillation	6
Cancer	7
Dementia	2

Education & Training

Dr. Gregory Martin Metz, MD graduated from University of Oklahoma College of Medicine. He completed residency at Duke University Medical Center. He is certified by the Board Certification: Amer Bd Allergy & Immunology and has a state license in Oklahoma.

Medical School: University of Oklahoma College of Medicine

Residency: Duke University Medical Center

Board Certification: Board Certification: Amer Bd Allergy & Immunology

Licensed In: Oklahoma

Affiliations & Hospitals

Dr. Gregory Martin Metz, MD is associated with these hospitals and organizations:

Mercy Hospital Oklahoma City

Mercy Health System

Ratings & Reviews

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General Payments

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

**Payments by Company**
GlaxoSmithKline, LLC.	$1,003 TRELEGY ELLIPTA $321	NUCALA $235	BREO $202	ADVAIR $58	ARNUITY $45	Other $142
AstraZeneca Pharmaceuticals LP	$1,001 FASENRA $464	SYMBICORT $331	TEZSPIRE $165	FARXIGA $25	BREZTRI $17
Regeneron Healthcare Solutions, Inc.	$621 DUPIXENT $621
Genentech USA, Inc.	$564 XOLAIR $394	$170
Kaleo, Inc.	$326 Auvi-Q $326
Other	$2,899 Dymista $238	Ruconest $231	Haegarda $212	XOLAIR $187	TAKHZYRO $168	Other $1,863

**Types of Payments**
Food and Beverage	$6,152
Education	$262

Biography

Dr. Gregory Metz is an Oklahoma City, OK physician who specializes in allergy & immunology. He is affiliated with Mercy Hospital Oklahoma City. Before performing his residency at Duke University Medical Center, Dr. Metz attended the University of Oklahoma College of Medicine for medical school.