Saralyn Mark, MD
Internal Medicine Physician · Washington, DC
Saralyn Mark, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1427364256, issued on Aug 31, 2010. Check the license (District of Columbia MD21231, as entered in NPPES) on the District of Columbia Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Saralyn Mark
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD21231 DC
Self-reported in NPPES; status is on the state search - Practice location
- 4208 Ingomar St, NW, Washington, DC 20015
- Phone
- (202) 230-4101
- Enumerated
- Aug 31, 2010
- Record last updated
- Aug 31, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (202) 237-1666
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Verify Saralyn Mark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD21231Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Saralyn Mark among 901 internal medicine physician records in District of Columbia
Saralyn Mark, 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 not. Its NPI, issued in 2010, is newer than 57% of them.
- NPI issued2010 · 57% of these records are older, 40% newer
- In a Medicare fileNo · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2010 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
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
- Collin Cullen, MDWashington, DC 200151689769523
- Barry Eisenstein, M.D.Washington, DC 200151285673285
- Alan Morrison, D.O.Washington, DC 200151023108461
- Nicholas Polis, MDWashington, DC 200151447380779
- Melvin Williams, M.D.Washington, DC 200151275892366
- Jon Wiseman, M.D.Washington, DC 200151316932882
- Alexander Chester, M.D.Washington, DC 200161518989821
- John Dooley, MDWashington, DC 200161467431155
Common questions
What is Saralyn Mark, MD's NPI number?
Saralyn Mark, MD's National Provider Identifier (NPI) is 1427364256, issued on Aug 31, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Saralyn Mark, MD located?
The NPPES record lists a practice address at 4208 Ingomar St, NW, Washington, DC, 20015. Phone: (202) 230-4101. Providers update this record themselves, so call before visiting.
How can I verify Saralyn Mark, MD's license?
NPPES lists District of Columbia license number MD21231, as entered by the provider. 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.