Adam Zachary Tillowitz, MD
Gastroenterology Physician · Washington, DC
Adam Zachary Tillowitz, MD is a gastroenterology physician with a practice address in Washington, District of Columbia, and NPI 1245869510, issued on Apr 7, 2020. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Adam Zachary Tillowitz
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- MD21210 RI
Self-reported in NPPES; status is on the state search - Practice location
- The GW Medical Faculty Associates, Washington, DC 20037
- Phone
- (202) 741-3000
- Enumerated
- Apr 7, 2020
- Record last updated
- May 18, 2026
- Medicare enrollment
- Enrolled (PECOS I20260526002093); may accept Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2020
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 89 in District of Columbia → Look up another NPI →
Also registered at The GW Medical Faculty Associates
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Noha Abdelgawad, M.DStudent in an Organized Health Care Education/Training Program1104246941
- Doaa Alqaidy, M.DStudent in an Organized Health Care Education/Training Program1134675408
- Andrew Baez RiveraStudent in an Organized Health Care Education/Training Program1033741327
- Timothy Batter, MDStudent in an Organized Health Care Education/Training Program1326501149
- Jennifer Beckerman, MDHematology & Oncology Physician1528687423
- Andres GarzaInternal Medicine Physician1619465242
Verify Adam Zachary Tillowitz 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
92% fewer Medicare Part D claims than the average gastroenterology physician in 2024
66 Medicare Part D claims for 31 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole16 claims
- Famotidine13 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.
Adam Zachary Tillowitz among 89 gastroenterology physician records in District of Columbia
Adam Zachary Tillowitz, MD is one of 89 gastroenterology physician records with a practice address in District of Columbia. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 99% of them.
- NPI issued2020 · 99% of these records are older, 0% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2020 · median 2004 among the 57 with a school on file
- Record last updated2026 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X 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).
Gastroenterology Physician providers in District of Columbia
There are 89 gastroenterology physician records in District of Columbia.
All 89 in District of Columbia → Every provider in Washington → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Bedoor AlabbasWashington, DC 200371952751182
- Philip Assatourians, M.D.Washington, DC 200371104912617
- Sumona BhattacharyaWashington, DC 200371598210973
- Paul Chang, MDWashington, DC 200371265492409
- Hemanth Gavini, MDWashington, DC 200371073522504
- Raymond JanowskiWashington, DC 200371477972131
- Abdalla KhouqeerWashington, DC 200371225535412
- Antoinette Saddler, MDWashington, DC 200371437105533
Common questions
What is Adam Zachary Tillowitz, MD's NPI number?
Adam Zachary Tillowitz, MD's National Provider Identifier (NPI) is 1245869510, issued on Apr 7, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Adam Zachary Tillowitz, MD located?
The NPPES record lists a practice address at The GW Medical Faculty Associates, Washington, DC, 20037. Phone: (202) 741-3000. Providers update this record themselves, so call before visiting.
How can I verify Adam Zachary Tillowitz, 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 Adam Zachary Tillowitz, MD prescribe under Medicare Part D?
In 2024, Adam Zachary Tillowitz, MD had 66 Medicare Part D claims for 31 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.