Shalini Mall Sitzmann, D.O.
Internal Medicine Physician · Washington, DC
Shalini Mall Sitzmann, D.O. is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1851566376, issued on Apr 25, 2008. Check the license (District of Columbia DO034576, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Shalini Mall Sitzmann
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO034576 DC
Self-reported in NPPES; status is on the state search - Practice location
- 2021 K St NW, Washington, DC 20006
- Phone
- (202) 293-3636
- Enumerated
- Apr 25, 2008
- Record last updated
- Oct 24, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (202) 293-0289
- Medicare enrollment
- Enrolled (PECOS I20081208000225); may accept Medicare assignment
- Medical or professional school
- University Of North Texas Hsc, College Of Osteopathic Med, 2005
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 2021 K St NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Shalini Mall Sitzmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license DO034576Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,749 Medicare Part D claims for 150 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium89 claims
- Levothyroxine Sodium70 claims
- Metoprolol Succinate58 claims
- Amlodipine Besylate55 claims
- Rosuvastatin Calcium52 claims
- Synthroid52 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.
Shalini Mall Sitzmann among 901 internal medicine physician records in District of Columbia
Shalini Mall Sitzmann, D.O. 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 2008, is newer than 45% of them.
- NPI issued2008 · 45% of these records are older, 46% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2005 · median 2008 among the 513 with a school on file
- Record last updated2016 · 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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- Thomas Hansson, M.D.Washington, DC 200061962414037
- Beth Horowitz, MDWashington, DC 200061134214950
- Asha Isable, MDWashington, DC 200061750363826
- Gary Koritzinsky, M.D.Washington, DC 200061366472128
- Michael Newman, MDWashington, DC 200061508932377
Common questions
What is Shalini Mall Sitzmann, D.O.'s NPI number?
Shalini Mall Sitzmann, D.O.'s National Provider Identifier (NPI) is 1851566376, issued on Apr 25, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Shalini Mall Sitzmann, D.O. located?
The NPPES record lists a practice address at 2021 K St NW, Washington, DC, 20006. Phone: (202) 293-3636. Providers update this record themselves, so call before visiting.
How can I verify Shalini Mall Sitzmann, D.O.'s license?
NPPES lists District of Columbia license number DO034576, 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.
How much does Shalini Mall Sitzmann, D.O. prescribe under Medicare Part D?
In 2024, Shalini Mall Sitzmann, D.O. had 1,749 Medicare Part D claims for 150 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.