James Francis Mackin, MD
Endocrinology, Diabetes & Metabolism Physician · Chevy Chase, MD
James Francis Mackin, MD is an endocrinology, diabetes & metabolism physician with a practice address in Chevy Chase, Maryland, and NPI 1780797647, issued on Aug 16, 2006. Check the license (Maryland D0037678, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- James Francis Mackin
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- D0037678 MD
MD 25579 DC
Self-reported in NPPES; status is on the state search - Practice location
- 5454 Wisconsin Ave, Chevy Chase, MD 20815
- Phone
- (301) 657-0802
- Enumerated
- Aug 16, 2006
- Record last updated
- Feb 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (301) 657-0803
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 314 in Maryland → Look up another NPI →
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Verify James Francis Mackin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0037678Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
11 Medicare Part D claims, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
James Francis Mackin among 314 endocrinology, diabetes & metabolism physician records in Maryland
James Francis Mackin, MD is one of 314 endocrinology, diabetes & metabolism physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Maryland
There are 314 endocrinology, diabetes & metabolism physician records in Maryland.
All 314 in Maryland → Every provider in Chevy Chase → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Frank Blackburn, MDChevy Chase, MD 208151114030079
- Stephanie Stein, MDChevy Chase, MD 208151710145255
- Shabina Ahmed, M.D.Bethesda, MD 208141023145521
- May Alattar, MDBethesda, MD 208141154523371
- Irene Feldman, M.D.Bethesda, MD 208141851330559
- Lynnette Nieman, M.D.Bethesda, MD 208141982976122
- George Saviolakis, M.D.Bethesda, MD 208141528021771
- Vikram ShenoyBethesda, MD 208141710397906
Common questions
What is James Francis Mackin, MD's NPI number?
James Francis Mackin, MD's National Provider Identifier (NPI) is 1780797647, issued on Aug 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Francis Mackin, MD located?
The NPPES record lists a practice address at 5454 Wisconsin Ave, Chevy Chase, MD, 20815. Phone: (301) 657-0802. Providers update this record themselves, so call before visiting.
How can I verify James Francis Mackin, MD's license?
NPPES lists Maryland license number D0037678, 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 Francis Mackin, MD prescribe under Medicare Part D?
In 2024, James Francis Mackin, MD had 11 Medicare Part D claims; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.