Katherine Chang Chretien, M.D.
Internal Medicine Physician · Washington, DC
Katherine Chang Chretien, M.D. is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1275638710, issued on Sep 13, 2006. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Katherine Chang Chretien
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D60240 MD
Self-reported in NPPES; status is on the state search - Practice location
- 50 Irving St NW, Washington, DC 20422
- Phone
- (202) 745-8390
- Enumerated
- Sep 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (202) 745-8184
- Medicare enrollment
- Enrolled (PECOS I20210816003515); may accept Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 50 Irving St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lelisse AbateGerontology Nurse Practitioner1629523337
- Jibril Abdus-Samad, PHARM.D.Pharmacotherapy Pharmacist1386743243
- Maureen AbehAdult Psychiatric/Mental Health Registered Nurse1396519021
- Katie Abu-Saba, DDSStudent in an Organized Health Care Education/Training Program1447149539
- Khadega Abuelgasim Ahmed, M.DInternal Medicine Physician1801070297
- Vinielle Acha-Morfaw, RNEmergency Registered Nurse1568003796
Verify Katherine Chang Chretien 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
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
32 Medicare Part D claims for 14 beneficiaries, against an average of 3,176 among the 108,855 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Johns Hopkins UniversityBaltimore, MD
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Chang Chretien among 901 internal medicine physician records in District of Columbia
Katherine Chang Chretien, M.D. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 67% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2000 · median 2008 among the 513 with a school on file
- Record last updated2007 · 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
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- Neil Evans, MDWashington, DC 204221154300838
- Navjit Goraya, M.D.Washington, DC 204221356443949
- Alan Greenberg, MDWashington, DC 204221184735649
- Daniel Herman, M.D.Washington, DC 204221891806683
- Navreet Kallar, M.D., M.P.H.Washington, DC 204221295770873
Common questions
What is Katherine Chang Chretien, M.D.'s NPI number?
Katherine Chang Chretien, M.D.'s National Provider Identifier (NPI) is 1275638710, issued on Sep 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Chang Chretien, M.D. located?
The NPPES record lists a practice address at 50 Irving St NW, Washington, DC, 20422. Phone: (202) 745-8390. Providers update this record themselves, so call before visiting.
How can I verify Katherine Chang Chretien, M.D.'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 Katherine Chang Chretien, M.D. prescribe under Medicare Part D?
In 2024, Katherine Chang Chretien, M.D. had 32 Medicare Part D claims for 14 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Katherine Chang Chretien, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.