Aaron Michael Gerstenmaier, M.D.
Family Medicine Physician · Colmar Manor, MD
Aaron Michael Gerstenmaier, M.D. is a family medicine physician with a practice address in Colmar Manor, Maryland, and NPI 1851602767, issued on Jun 24, 2010. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Aaron Michael Gerstenmaier
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD041031 DC
Self-reported in NPPES; status is on the state search - Practice location
- 4151 Bladensburg RD, Colmar Manor, MD 20722
- Phone
- (301) 699-7707
- Enumerated
- Jun 24, 2010
- Record last updated
- Sep 13, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131105001040); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 4151 Bladensburg RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Georgette Adae-Mensah, MDStudent in an Organized Health Care Education/Training Program1073455648
- Rachelle Barrett Toman, M.D., PH.D.Family Medicine Physician1720233406
- Aerielle BookerStudent in an Organized Health Care Education/Training Program1417377011
- Tracy Cassagnol, MDStudent in an Organized Health Care Education/Training Program1295078921
- Kharastin Chea-Howard, MD, MPHStudent in an Organized Health Care Education/Training Program1629862792
- William Gallagher, MDFamily Medicine Physician1437187648
Verify Aaron Michael Gerstenmaier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average family medicine physician in 2024
1,867 Medicare Part D claims for 108 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims. 24 claims were for opioids.
Most prescribed
- Atorvastatin Calcium167 claims
- Biktarvy81 claims
- Gabapentin58 claims
- Amlodipine Besylate57 claims
- Albuterol Sulfate Hfa56 claims
- Descovy56 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 3 group practices
- Community OF Hope, IncWashington, DC
- Medstar Urgent Care LLCWheaton, MD
- Optimum Health LLCAlexandria, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Michael Gerstenmaier among 1,912 family medicine physician records in Maryland
Aaron Michael Gerstenmaier, M.D. is one of 1,912 family medicine physician records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2010 · median 2004 among the 1,141 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 family medicine physician records list a practice address in Colmar Manor
They are 14 of the 40 NPPES records with a practice address in Colmar Manor, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Colmar Manor → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rachelle Barrett Toman, M.D., PH.D.Colmar Manor, MD 207221720233406
- William Gallagher, MDColmar Manor, MD 207221437187648
- Jamie Hill-Daniel, MDColmar Manor, MD 207221477739084
- Douglas Kamerow, M.D.Colmar Manor, MD 207221467665596
- Sadhana RajamoorthiColmar Manor, MD 207221770902801
- Breanna Ramsey, MDColmar Manor, MD 207221992646921
- Mia Riley, M.D.Colmar Manor, MD 207221225416050
- John Roegner, M.D.Colmar Manor, MD 207221700979937
Common questions
What is Aaron Michael Gerstenmaier, M.D.'s NPI number?
Aaron Michael Gerstenmaier, M.D.'s National Provider Identifier (NPI) is 1851602767, issued on Jun 24, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Michael Gerstenmaier, M.D. located?
The NPPES record lists a practice address at 4151 Bladensburg RD, Colmar Manor, MD, 20722. Phone: (301) 699-7707. Providers update this record themselves, so call before visiting.
How can I verify Aaron Michael Gerstenmaier, M.D.'s license?
Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aaron Michael Gerstenmaier, M.D. prescribe under Medicare Part D?
In 2024, Aaron Michael Gerstenmaier, M.D. had 1,867 Medicare Part D claims for 108 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.