Mary Kathryn Hannan, M.D.
Internal Medicine Physician · Washington, DC
Mary Kathryn Hannan, M.D. is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1851787824, issued on Apr 7, 2015. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mary Kathryn Hannan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 276673 MA
Self-reported in NPPES; status is on the state search - Practice location
- Red Team Primary Care, Washington, DC 20422
- Phone
- (202) 745-8000
- Enumerated
- Apr 7, 2015
- Record last updated
- Sep 21, 2023
- Fax
- (202) 518-4880
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Verify Mary Kathryn Hannan 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
25 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.
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.
Mary Kathryn Hannan among 901 internal medicine physician records in District of Columbia
Mary Kathryn Hannan, 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 2015, is newer than 73% of them.
- NPI issued2015 · 73% of these records are older, 23% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2023 · 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
- Katherine Auerswald, MDWashington, DC 204221679676894
- Sharon Baratz, MDWashington, DC 204221538121009
- Jacqueline Corrigan-Curay, MDWashington, DC 204221619079605
- 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 Mary Kathryn Hannan, M.D.'s NPI number?
Mary Kathryn Hannan, M.D.'s National Provider Identifier (NPI) is 1851787824, issued on Apr 7, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary Kathryn Hannan, M.D. located?
The NPPES record lists a practice address at Red Team Primary Care, Washington, DC, 20422. Phone: (202) 745-8000. Providers update this record themselves, so call before visiting.
How can I verify Mary Kathryn Hannan, 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 Mary Kathryn Hannan, M.D. prescribe under Medicare Part D?
In 2024, Mary Kathryn Hannan, M.D. had 25 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.