James P. Amerena, M.D.
Family Medicine Physician · Frederick, MD
James P. Amerena, M.D. is a family medicine physician with a practice address in Frederick, Maryland, and NPI 1912981929, issued on Dec 2, 2005. Check the license (Maryland D0036421, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- James P. Amerena
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D0036421 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9093 Ridgefield Dr, Frederick, MD 21701
- Phone
- (301) 682-4100
- Enumerated
- Dec 2, 2005
- Record last updated
- Aug 2, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (301) 682-9100
- Medicaid IDs
- 926580508 MD
926580505 MD
793391600 MD - Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 9093 Ridgefield Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Beins, BHSC OTRLPediatric Occupational Therapist1326220138
- Judith Blum, OTRLPediatric Occupational Therapist1942482773
- Janet Ciarkowski, M.D.Family Medicine Physician1366426371
- Gregory Demaille, D.C.Chiropractor1902835382
- Matilde Facet, D.D.S,General Practice Dentistry1477697464
- Christopher Hinchman, D.C.Chiropractor1689600355
Verify James P. Amerena in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0036421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
186 Medicare Part D claims for 62 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium15 claims
- Metformin Hcl13 claims
- Amlodipine Besylate12 claims
- Simvastatin11 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.
Industry payments in 2024: $15.20
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
James P. Amerena among 1,912 family medicine physician records in Maryland
James P. Amerena, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2016 · 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).
65 family medicine physician records list a practice address in Frederick
They are 65 of the 3,981 NPPES records with a practice address in Frederick, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Frederick → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Janet Ciarkowski, M.D.Frederick, MD 217011366426371
- Patrick Farrell, D.O.Frederick, MD 217011053765487
- Irfan Hassen, M.D.Frederick, MD 217011073538849
- Matthew Lopiano, MDFrederick, MD 217011275283707
- Mariam Nejati, MDFrederick, MD 217011285098574
- Joseph Ashwal, M.D.Frederick, MD 217021508840026
- Barbara Brookmyer, M.D.Frederick, MD 217021548259203
- Gerard Delgrippo, M.D.Frederick, MD 217021447233234
Common questions
What is James P. Amerena, M.D.'s NPI number?
James P. Amerena, M.D.'s National Provider Identifier (NPI) is 1912981929, issued on Dec 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James P. Amerena, M.D. located?
The NPPES record lists a practice address at 9093 Ridgefield Dr, Frederick, MD, 21701. Phone: (301) 682-4100. Providers update this record themselves, so call before visiting.
How can I verify James P. Amerena, M.D.'s license?
NPPES lists Maryland license number D0036421, as entered by the provider. 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 James P. Amerena, M.D. prescribe under Medicare Part D?
In 2024, James P. Amerena, M.D. had 186 Medicare Part D claims for 62 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.