William B. Sullivan, N.P.
Gerontology Nurse Practitioner · New York, NY
William B. Sullivan, N.P. is a gerontology nurse practitioner with a practice address in New York, New York, and NPI 1457542979, issued on Aug 8, 2007. Check the license with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William B. Sullivan
- Credential
- N.P.
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License number
- 14982 CA
Self-reported in NPPES; status is on the state search - Practice location
- 423 E 23RD St, New York, NY 10010
- Phone
- (415) 707-9728
- Enumerated
- Aug 8, 2007
- Record last updated
- Jun 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 392 in New York → Look up another NPI →
Also registered at 423 E 23RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William B. Sullivan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024
133 Medicare Part D claims for 17 beneficiaries, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D.
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.
William B. Sullivan among 392 gerontology nurse practitioner records in New York
William B. Sullivan, N.P. is one of 392 gerontology nurse practitioner records with a practice address in New York. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 24% of them.
- NPI issued2007 · 24% of these records are older, 64% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileNo · 37% of these records are
- Record last updated2013 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gerontology Nurse Practitioner providers in New York
There are 392 gerontology nurse practitioner records in New York.
All 392 in New York → Every provider in New York → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Abraham Brody, RN, PHD, GNP-BCNew York, NY 100101124240825
- Lina Camagay-Montante, DNP, MSN, GNP-BCNew York, NY 100101457426371
- Maureen Clarke-Holder, NPNew York, NY 100101588612352
- Therese Cortez, NPNew York, NY 100101366548786
- Maryanne Henderson, NPNew York, NY 100101811945165
- Belen Punzalan, NPNew York, NY 100101457317000
- Deborah Rasdall, NPNew York, NY 100101780641159
- Frances Scotto, N.P.New York, NY 100101073575452
Common questions
What is William B. Sullivan, N.P.'s NPI number?
William B. Sullivan, N.P.'s National Provider Identifier (NPI) is 1457542979, issued on Aug 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William B. Sullivan, N.P. located?
The NPPES record lists a practice address at 423 E 23RD St, New York, NY, 10010. Phone: (415) 707-9728. Providers update this record themselves, so call before visiting.
How can I verify William B. Sullivan, N.P.'s license?
Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does William B. Sullivan, N.P. prescribe under Medicare Part D?
In 2024, William B. Sullivan, N.P. had 133 Medicare Part D claims for 17 beneficiaries; the average among gerontology nurse practitioner prescribers was 1,369. 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.