Adnan K. Diwan, MD
Internal Medicine Physician · Rye, NY
Adnan K. Diwan, MD is an internal medicine physician with a practice address in Rye, New York, and NPI 1144279878, issued on May 9, 2006. Check the license (New York 236586, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Adnan K. Diwan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 236586 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1 Theall RD, Rye, NY 10580
- Phone
- (914) 848-8700
- Enumerated
- May 9, 2006
- Record last updated
- Oct 16, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (914) 682-6403
- Medicare enrollment
- Enrolled (PECOS I20060418000507); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 1 Theall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Adnan K. Diwan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 236586Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
188 Medicare Part D claims for 52 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium17 claims
- Levothyroxine Sodium17 claims
- Losartan Potassium15 claims
- Donepezil Hcl12 claims
- Memantine Hcl12 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.
Bills Medicare through one group practice
- Westchester Medical Group, P.CWhite Plains, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Adnan K. Diwan among 12,067 internal medicine physician records in New York
Adnan K. Diwan, MD is one of 12,067 internal medicine physician records with a practice address in New York. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2002 · median 2002 among the 7,221 with a school on file
- Record last updated2013 · 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Rye
They are 15 of the 356 NPPES records with a practice address in Rye, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Rye → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sandra Ang, MDRye, NY 105801700975133
- George Boutis, MDRye, NY 105801891956769
- Silvio Ceccarelli, MDRye, NY 105801811972698
- Sandy George, MDRye, NY 105801740253954
- Mandira Gharekhan, MDRye, NY 105801669445391
- David Herzog, MDRye, NY 105801093788374
- Jay Mathur, DORye, NY 105801609192608
- Beth Moore, MDRye, NY 105801558408245
Common questions
What is Adnan K. Diwan, MD's NPI number?
Adnan K. Diwan, MD's National Provider Identifier (NPI) is 1144279878, issued on May 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Adnan K. Diwan, MD located?
The NPPES record lists a practice address at 1 Theall RD, Rye, NY, 10580. Phone: (914) 848-8700. Providers update this record themselves, so call before visiting.
How can I verify Adnan K. Diwan, MD's license?
NPPES lists New York license number 236586, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Adnan K. Diwan, MD prescribe under Medicare Part D?
In 2024, Adnan K. Diwan, MD had 188 Medicare Part D claims for 52 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.