William J. Assante, MD
Internal Medicine Physician · Cortlandt Manor, NY
William J. Assante, MD is an internal medicine physician with a practice address in Cortlandt Manor, New York, and NPI 1629179379, issued on Sep 26, 2006. Check the license (New York 185848, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William J. Assante
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 185848 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1985 Crompond RD, Cortlandt Manor, NY 10567
- Phone
- (914) 739-6550
- Enumerated
- Sep 26, 2006
- Record last updated
- Sep 3, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (914) 739-4575
- Medicaid ID
- 02693910 NY
- Entity
- Type 1 · individual
Also registered at 1985 Crompond RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dorothy Adler, NPWomen's Health Nurse Practitioner1689893828
- Nadia Amin, M.D.Internal Medicine Physician1962693937
- Elliot ArnoPhysical Therapist1295817815
- Jacqueline Arno, P.T.Physical Therapist1730261272
- Richard Becker, M.D.Cardiovascular Disease Physician1407851025
- Laura Bentivenga, NPFamily Nurse Practitioner1255593588
Verify William J. Assante 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 185848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
16 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
15 internal medicine physician records list a practice address in Cortlandt Manor
They are 15 of the 456 NPPES records with a practice address in Cortlandt Manor, and 12,067 internal medicine physician records in New York.
All 15 in Cortlandt Manor → All 12,067 in New York → Every provider in Cortlandt Manor →
Other internal medicine physician records in New York
- Deborah Aanonsen, D.O.Staten Island, NY1952395717
- Nivedita Aanur, M.D.New York, NY1982833471
- Jay Aaron, MDGreat Neck, NY1245332956
- Ahmad AbadiPoughkeepsie, NY1780258517
- Jamsheed Abadi, MDBrooklyn, NY1477537496
- Antonieta Abarientos, MDNew Rochelle, NY1649285123
- Zurab Abayev, M.D.Brooklyn, NY1841283058
- Ehab Abaza, MDNew York, NY1114507555
- Vaidarshi Abbagoni, MDNew York, NY1871237495
- Muhammad AbbasRichmond Hill, NY1053996587
Common questions
What is William J. Assante, MD's NPI number?
William J. Assante, MD's National Provider Identifier (NPI) is 1629179379, issued on Sep 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Assante, MD located?
The NPPES record lists a practice address at 1985 Crompond RD, Cortlandt Manor, NY, 10567. Phone: (914) 739-6550. Providers update this record themselves, so call before visiting.
How can I verify William J. Assante, MD's license?
NPPES lists New York license number 185848, 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 William J. Assante, MD prescribe under Medicare Part D?
In 2024, William J. Assante, MD had 16 Medicare Part D claims; 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.