Sean Osullivan, PHYSICIAN ASSISTANT
NPI 1437103090 · Physician Assistant · Brewster, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Osullivan, PHYSICIAN ASSISTANT is a Physician Assistant provider in Brewster, NY (NPI 1437103090).
Provider details
- NPI number
- 1437103090
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PHYSICIAN ASSISTANT
- Sex
- Male
- Sole proprietor
- No
- License
- 009491 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
475 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 206 | $84 |
| Respiratory Infectious Agent Detection By Rna for Severe Acute Respiratory Syndrome Coronavirus 2 (covid 19), Influenza A, Influenza B, and Respiratory Syncytial Virus, Upper Respiratory Specimen, Each Reported As Detected Or Not Detected0241U | 62 | $140 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 54 | $117 |
| Urinalysis, Manual Test81002 | 41 | $3 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 30 | $16 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 72 | 70 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 60 | 60 |
| Fluticasone Propionate | 54 | 52 |
| Cefdinir | 37 | 37 |
| Azithromycin | 35 | 35 |
| Prednisone | 23 | 22 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 19 | 19 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2017-02-11
Frequently asked questions
- What is Sean Osullivan's NPI number?
- Sean Osullivan's National Provider Identifier (NPI) is 1437103090, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Osullivan's specialty?
- Sean Osullivan is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sean Osullivan located?
- Sean Osullivan's practice location on file with NPPES is 111 Clock Tower Cmns, Brewster, NY 10509-4055.
- What is Sean Osullivan's phone number?
- The practice phone number listed in the NPPES registry for Sean Osullivan is (845) 592-4915.
- Does Sean Osullivan accept Medicare?
- Sean Osullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Osullivan's NPI active?
- Yes — Sean Osullivan's NPI (1437103090) is active in the NPPES registry as of the last update on 2017-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.