NPPES file of Aug 9, 2026

James J. Sullivan, DDS

General Practice Dentistry · Ossining, NY

James J. Sullivan, DDS is a general practice dentistry with a practice address in Ossining, New York, and NPI 1275735631, issued on Jun 5, 2007. Check the license (New York 041386, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1275735631
Name
James J. Sullivan
Credential
DDS
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
041386 NY
Self-reported in NPPES; status is on the state search
Practice location
100 S Highland Ave, Ossining, NY 10562
Phone
(914) 941-0825
Enumerated
Jun 5, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(914) 941-0844
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 100 S Highland Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Agnieszka Beckford, RDH, THERAPISTDental Hygienist1841794039
  2. Jerome Felsenstein, M.D.Dermatology Physician1124137492
  3. Young KimPrimary Care Nurse Practitioner1265245294
  4. Jerome Loewenstein, D.M.D.Prosthodontics1801098231
  5. Silvy Mathew, MDInternal Medicine Physician1295700276
  6. Michael McCormick, M.DFamily Medicine Physician1538115415

Verify James J. Sullivan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 041386
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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57% fewer Medicare Part D claims than the average general practice dentistry in 2024

36 Medicare Part D claims for 25 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. James Sullivan36
  2. Specialty average83

Most prescribed

  1. Amoxicillin13 claims
  2. Sodium Fluoride12 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.

James J. Sullivan among 7,828 general practice dentistry records in New York

James J. Sullivan, DDS is one of 7,828 general practice dentistry records with a practice address in New York. 60% 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 35% of them.

  • NPI issued2007 · 35% of these records are older, 35% newer
  • In a Medicare fileYes · 60% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 79% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

6 general practice dentistry records list a practice address in Ossining

They are 6 of the 403 NPPES records with a practice address in Ossining, and 7,828 general practice dentistry records in New York.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Jeffrey Berkowitz, D.D.S.Ossining, NY 105621326013335
  2. Mukesh DesaiOssining, NY 105621316938376
  3. Allan Jacobson, D.D.S.Ossining, NY 105621992764021
  4. Claudia Lozano, DDSOssining, NY 105621629306931
  5. Joseph Mobilia, D.D.S.Ossining, NY 105621447418629
  6. Ralph Cunningham, DDSPeekskill, NY 105661336369461
  7. Joseph Fontana, DDSPeekskill, NY 105661295812881
  8. Maryellen Keefe, DMDPeekskill, NY 105661932245925

Common questions

What is James J. Sullivan, DDS's NPI number?

James J. Sullivan, DDS's National Provider Identifier (NPI) is 1275735631, issued on Jun 5, 2007. An NPI identifies a provider in billing; it is not a license.

Where is James J. Sullivan, DDS located?

The NPPES record lists a practice address at 100 S Highland Ave, Ossining, NY, 10562. Phone: (914) 941-0825. Providers update this record themselves, so call before visiting.

How can I verify James J. Sullivan, DDS's license?

NPPES lists New York license number 041386, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does James J. Sullivan, DDS prescribe under Medicare Part D?

In 2024, James J. Sullivan, DDS had 36 Medicare Part D claims for 25 beneficiaries; the average among general practice dentistry prescribers was 83. 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.