Derek Karr, MD
General Practice Physician · Bethesda, MD
Derek Karr, MD is a general practice physician with a practice address in Bethesda, Maryland, and NPI 1033640511, issued on Mar 25, 2017. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Derek Karr
- Credential
- MD
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 0101265636 VA
Self-reported in NPPES; status is on the state search - Practice location
- 8901 Rockville Pike, Bethesda, MD 20889
- Phone
- (229) 639-7886
- Enumerated
- Mar 25, 2017
- Record last updated
- Jun 15, 2026
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 385 in Maryland → Look up another NPI →
Also registered at 8901 Rockville Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Derek Karr 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
100% fewer Medicare Part D claims than the average general practice physician in 2024
14 Medicare Part D claims, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
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.
Derek Karr among 385 general practice physician records in Maryland
Derek Karr, MD is one of 385 general practice physician records with a practice address in Maryland. 26% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 43% of them.
- NPI issued2017 · 43% of these records are older, 56% newer
- In a Medicare fileYes · 26% of these records are
- In the CMS Doctors and Clinicians fileNo · 14% of these records are
- Record last updated2026 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
194 general practice physician records list a practice address in Bethesda
They are 194 of the 7,245 NPPES records with a practice address in Bethesda, and 385 general practice physician records in Maryland.
All 385 in Maryland → Every provider in Bethesda → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Mary Andrews, M.D.Bethesda, MD 208891750519047
- Roxanne Danielson, M.D. M.P.H. M.S.Bethesda, MD 208891609071299
- Kevin Friedman, DOBethesda, MD 208891407951346
- Meghan Ginn, M.D.Bethesda, MD 208891770844482
- Sarah Gordon, M.D.Bethesda, MD 208891255625430
- Corey Gunderson, DOBethesda, MD 208891639634744
- Jane Ma, MDBethesda, MD 208891235692328
- Emerson Maniwang, MDBethesda, MD 208891205396470
Common questions
What is Derek Karr, MD's NPI number?
Derek Karr, MD's National Provider Identifier (NPI) is 1033640511, issued on Mar 25, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Derek Karr, MD located?
The NPPES record lists a practice address at 8901 Rockville Pike, Bethesda, MD, 20889. Phone: (229) 639-7886. Providers update this record themselves, so call before visiting.
How can I verify Derek Karr, MD'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 Derek Karr, MD prescribe under Medicare Part D?
In 2024, Derek Karr, MD had 14 Medicare Part D claims; the average among general practice physician prescribers was 3,030. 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.