Dr. Michael Aaron Gnatt, MD
- Medicare services, 2024
- 262
- Medicare patients, 2024
- 68
- Part D claims, 2024
- 1,125
- Affiliated sites
- 1
- State licenses
- 2
- Practice address
- 3204 Tower Oaks Blvd, Rockville, MD 20852
- Practice phone
- Call (301) 801-8268
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gnatt Medical Associates
Rockville, Maryland
Find Dr. Gnatt's professional email, personal email and mobile number
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Dr. Michael Aaron Gnatt is an internist in Rockville, Maryland
Dr. Gnatt practices at Gnatt Medical Associates in Rockville, Maryland.
Dr. Gnatt's NPI, 1255392866, was assigned on March 31, 2006. Dr. Gnatt graduated from University of Maryland School of Medicine in 1982. Dr. Gnatt holds Maryland license D0066915.
- NPI
- 1255392866NPI Registry (opens in a new tab)
- NPI enumeration date
- March 31, 2006
- NPI status
- Active
- Practice phone
- (301) 801-8268
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Michael Aaron Gnatt practices at Gnatt Medical Associates in Rockville, Maryland
Dr. Gnatt's primary practice is Gnatt Medical Associates, at 3204 Tower Oaks Blvd, Rockville, MD 20852 in Montgomery County. The practice phone is (301) 801-8268.
- Gnatt Medical Associates3204 Tower Oaks Blvd, Rockville, MD 20852 · Montgomery CountyPhone(301) 801-8268
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Michael Aaron Gnatt is affiliated with 2 sites of care
Dr. Gnatt's primary practice is Gnatt Medical Associates in Rockville, Maryland. Dmand AI also links Dr. Gnatt to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Michael Aaron Gnatt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gnatt practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gnatt Medical Associates | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Aaron Gnatt is one of 3,320 internists in Maryland
Internal medicine is Dr. Gnatt's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Gnatt's licenses on file in 2 states: Maryland and New York.
Specialties and state licenses
- Internal medicine, MarylandPrimary
- New York license
Internists near Dr. Gnatt
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael Aaron Gnatt billed Medicare for 262 services in 2024
CMS data shows 262 Medicare services from Dr. Gnatt across 4 procedure codes in 2024, for 68 Medicare patients. Medicare paid $17,541 for them. Every service was in an office.
Dr. Gnatt's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2872024: 15546%
- Surgery
- 2023: 1702024: 9544%
- Tests and treatments
- 2023: 652024: 1282%
- Other services
- 2023: 1802024: 0100%
Dr. Gnatt compared with the Maryland median for internists, 2024
- Dr. Gnatt
- Maryland median
- Medicare services
- 262vs 65660% below
- Medicare patients
- 68vs 25173% below
- Part D claims
- 720vs 3092.3 times
Medians across 3,215 internists in Maryland with Dmand AI profiles that report each measure.
Dr. Gnatt's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Aaron Gnatt treated 68 Medicare patients in 2024, average age 81
CMS counts 68 Medicare patients who saw Dr. Gnatt in 2024. The largest group is 75 to 84, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gnatt's median patient age at 65, with 36% women.
Dr. Gnatt's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gnatt's Medicare patients by sex, 2024
- Women3551%
- Men3349%
Chronic conditions among Dr. Gnatt's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease53%
- Arthritis43%
- Depression35%
- Mood disorders35%
- Diabetes31%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gnatt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Aaron Gnatt wrote 1,125 Medicare Part D claims in 2024
In 2024, Dr. Gnatt wrote 1,125 Medicare Part D claims for 66 patients. 86% of them were for generic drugs. CMS names the drug for 720 of them, across 32 drugs with 11 or more claims each, at $88,719 in total drug cost. In 2023, CMS named 917 claims across 38 drugs.
Dr. Gnatt's Part D claims by kind of drug, 2024
- Generic962 claims86%
- Brand-name and other163 claims14%
Dr. Gnatt's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Gnatt's Part D claims, 2024
- Opioids1%12 of 1,125 claims
- Antibiotics1%12 of 1,125 claims
- Antipsychotics, patients 65 and over2%21 of 1,125 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9172024: 72021%
Drugs named by CMS: 32 in 2024, 38 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Michael Aaron Gnatt graduated from University of Maryland School of Medicine
Dr. Gnatt graduated from University of Maryland School of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Aaron Gnatt's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael Aaron Gnatt
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael Aaron Gnatt's NPI number?
Dr. Michael Aaron Gnatt's NPI number is 1255392866. It was assigned on March 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Aaron Gnatt?
Dr. Michael Aaron Gnatt is an internist in Rockville, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael Aaron Gnatt practice?
Dr. Gnatt practices at 3204 Tower Oaks Blvd, Rockville, MD 20852. Dr. Gnatt's primary practice is Gnatt Medical Associates in Rockville, Maryland. Dmand AI also links Dr. Gnatt to 1 physician office.
What is Dr. Michael Aaron Gnatt's office phone number?
The practice phone on file for Dr. Gnatt is (301) 801-8268.
What is Dr. Michael Aaron Gnatt's medical license number?
Dr. Gnatt holds Maryland license D0066915, one of the licenses on file in 2 states.
Which states has Dr. Michael Aaron Gnatt been licensed in?
Dmand AI has state licenses on file for Dr. Gnatt in Maryland and New York.
Does Dr. Michael Aaron Gnatt accept Medicare?
Yes. CMS data shows Dr. Gnatt billed Medicare for 262 services in 2024.
How many Medicare patients does Dr. Michael Aaron Gnatt see?
CMS counts 68 Medicare patients who saw Dr. Gnatt in 2024, with an average age of 81.
What services does Dr. Michael Aaron Gnatt bill to Medicare?
In 2024, Dr. Gnatt's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and office visit, established patient (99215).
Where did Dr. Michael Aaron Gnatt go to medical school?
Dr. Gnatt graduated from University of Maryland School of Medicine in 1982.
What drugs does Dr. Michael Aaron Gnatt prescribe most?
In 2024 Medicare Part D data, Dr. Gnatt's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
How long has Dr. Michael Aaron Gnatt been practicing?
Dr. Gnatt graduated from medical school in 1982, 44 years ago.
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