Ioana Fat, MD
Endocrinology, Diabetes & Metabolism Physician · Washington, DC
Ioana Fat, MD is an endocrinology, diabetes & metabolism physician with a practice address in Washington, District of Columbia, and NPI 1205082724, issued on Aug 15, 2008. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Ioana Fat
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 249910 MA
Self-reported in NPPES; status is on the state search - Practice location
- 3800 Reservoir RD NW, Washington, DC 20007
- Phone
- (202) 687-2818
- Enumerated
- Aug 15, 2008
- Record last updated
- Apr 9, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (877) 285-1490
- Medicare enrollment
- Enrolled (PECOS I20120227000126); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 61 in District of Columbia → Look up another NPI →
Also registered at 3800 Reservoir RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ahmed AbdelfatahStudent in an Organized Health Care Education/Training Program1326918269
- Zeinab Abdi, M.D.Pediatrics Physician1861781437
Verify Ioana Fat 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
23% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,021 Medicare Part D claims for 303 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 57% of claims.
Most prescribed
- Ozempic277 claims
- Jardiance185 claims
- Mounjaro181 claims
- Levothyroxine Sodium149 claims
- Metformin Hcl100 claims
- Alendronate Sodium96 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.
Industry payments in 2024: $2,286.66
104 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Community Physicians Associates IncMilton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ioana Fat among 61 endocrinology, diabetes & metabolism physician records in District of Columbia
Ioana Fat, MD is one of 61 endocrinology, diabetes & metabolism physician records with a practice address in District of Columbia. 70% 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 61% of them.
- NPI issued2008 · 61% of these records are older, 26% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2006 · median 1998 among the 32 with a school on file
- Record last updated2014 · 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 207RE0101X 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).
Endocrinology, Diabetes & Metabolism Physician providers in District of Columbia
There are 61 endocrinology, diabetes & metabolism physician records in District of Columbia.
All 61 in District of Columbia → Every provider in Washington → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Julianna Barsony, M.D.Washington, DC 200071427297233
- Natasa Janicic-KahricWashington, DC 200071306845748
- Jacqueline JonklaasWashington, DC 200071285633636
- William KuenstnerWashington, DC 200071225615123
- Joseph VerbalisWashington, DC 200071194724047
- Monica Skarulis, M.D.Washington, DC 200081891067138
- Teresa Jones, MDWashington, DC 200091114035177
- Kenneth Burman, MDWashington, DC 200101790734630
Common questions
What is Ioana Fat, MD's NPI number?
Ioana Fat, MD's National Provider Identifier (NPI) is 1205082724, issued on Aug 15, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ioana Fat, MD located?
The NPPES record lists a practice address at 3800 Reservoir RD NW, Washington, DC, 20007. Phone: (202) 687-2818. Providers update this record themselves, so call before visiting.
How can I verify Ioana Fat, 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 Ioana Fat, MD prescribe under Medicare Part D?
In 2024, Ioana Fat, MD had 2,021 Medicare Part D claims for 303 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.