Maren K. Ketcham, MD
Internal Medicine Physician · Washington, DC
Maren K. Ketcham, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1427410141, issued on Mar 22, 2016. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Maren K. Ketcham
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D0089431 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1001 G St NW Ste 200E, Washington, DC 20001
- Phone
- (888) 663-6331
- Enumerated
- Mar 22, 2016
- Record last updated
- Mar 17, 2025
- Fax
- (415) 252-7176
- Medicare enrollment
- Enrolled (PECOS I20210510000680); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 1001 G St NW Ste 200E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Barr, PHYSICIAN ASSISTANTPhysician Assistant1609487370
- Alicia Buchwalter, MDInternal Medicine Physician1437210192
- Carolyn Cabrey, PAPhysician Assistant1760901714
- Jean-Luc Doan, PA-CPhysician Assistant1104336486
- Daniel Garfinkel, MDFamily Medicine Physician1871581942
- Marcella Hill, CRNPFamily Nurse Practitioner1982292397
Verify Maren K. Ketcham in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of MedicineCheck 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 internal medicine physician in 2024
153 Medicare Part D claims for 48 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate11 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 2 group practices
- One Medstar Primary Care LLCWashington, DC
- Privia Medical Group, LLCArlington, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maren K. Ketcham among 901 internal medicine physician records in District of Columbia
Maren K. Ketcham, MD is one of 901 internal medicine physician records with a practice address in District of Columbia. 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 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2016 · median 2008 among the 513 with a school on file
- Record last updated2025 · 61% 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 District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
891 internal medicine physician records list a practice address in Washington
They are 891 of the 45,857 NPPES records with a practice address in Washington, and 901 internal medicine physician records in District of Columbia.
All 901 in District of Columbia → Every provider in Washington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Randi Abramson, MDWashington, DC 200011841379252
- Katheleen Andrews, M.D.Washington, DC 200011851495477
- Alicia Buchwalter, MDWashington, DC 200011437210192
- Andrea Buck, M.D.Washington, DC 200011699965129
- Anne Cardile, MDWashington, DC 200011992866420
- Renee Chen-Lee, D.O.Washington, DC 200011942297833
- Catherine Crosland, MDWashington, DC 200011245218650
- Deborah Edge, M.D.Washington, DC 200011295719136
Common questions
What is Maren K. Ketcham, MD's NPI number?
Maren K. Ketcham, MD's National Provider Identifier (NPI) is 1427410141, issued on Mar 22, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Maren K. Ketcham, MD located?
The NPPES record lists a practice address at 1001 G St NW Ste 200E, Washington, DC, 20001. Phone: (888) 663-6331. Providers update this record themselves, so call before visiting.
How can I verify Maren K. Ketcham, MD's license?
Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maren K. Ketcham, MD prescribe under Medicare Part D?
In 2024, Maren K. Ketcham, MD had 153 Medicare Part D claims for 48 beneficiaries; 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.