Joan Ritter, M.D.
Internal Medicine Physician · Bethesda, MD
Joan Ritter, M.D. is an internal medicine physician with a practice address in Bethesda, Maryland, and NPI 1245322064, issued on Sep 29, 2006. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Joan Ritter
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101229159 VA
Self-reported in NPPES; status is on the state search - Practice location
- America Building Wrnmmc RM 2510, Bethesda, MD 20889
- Phone
- (301) 295-4515
- Enumerated
- Sep 29, 2006
- Record last updated
- Aug 30, 2023
- Medicare enrollment
- Enrolled (PECOS I20110131000555); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Verify Joan Ritter 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
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
52 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amlodipine Besylate12 claims
- Fluticasone Propionate12 claims
- Losartan Potassium12 claims
- Paroxetine Hcl12 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 one group practice
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joan Ritter among 3,904 internal medicine physician records in Maryland
Joan Ritter, M.D. is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1990 · median 2003 among the 2,445 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
288 internal medicine physician records list a practice address in Bethesda
They are 288 of the 7,245 NPPES records with a practice address in Bethesda, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Bethesda → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Darrell Baranko, M.D.Bethesda, MD 208891366431082
- Jeffrey Blair, M.D.Bethesda, MD 208891184625378
- Richard Catherina, M.D.Bethesda, MD 208891437131505
- Kim Gibson, MDBethesda, MD 208891700861374
- Heather Grote, MDBethesda, MD 208891275512204
- Paul Han, MDBethesda, MD 208891144205162
- Douglas Hawk, M.D.Bethesda, MD 208891013990886
- Christopher Martin, M.D.Bethesda, MD 208891750362505
Common questions
What is Joan Ritter, M.D.'s NPI number?
Joan Ritter, M.D.'s National Provider Identifier (NPI) is 1245322064, issued on Sep 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joan Ritter, M.D. located?
The NPPES record lists a practice address at America Building Wrnmmc RM 2510, Bethesda, MD, 20889. Phone: (301) 295-4515. Providers update this record themselves, so call before visiting.
How can I verify Joan Ritter, 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 Joan Ritter, M.D. prescribe under Medicare Part D?
In 2024, Joan Ritter, M.D. had 52 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.