Maureen O'Brien, PA
NPI 1669663274 · Physician Assistant · Ithaca, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maureen O'Brien, PA is a Physician Assistant provider in Ithaca, NY (NPI 1669663274).
Provider details
- NPI number
- 1669663274
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
- License
- 4879 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 97 | 35 |
| Buprenorphine Hcl | 84 | 22 |
| Buprenorphine Hcl/Naloxone Hclbrand: Suboxone | 40 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-08
- Last updated
- 2024-08-07
- Certified
- 2024-08-07
Frequently asked questions
- What is Maureen O'Brien's NPI number?
- Maureen O'Brien's National Provider Identifier (NPI) is 1669663274, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maureen O'Brien's specialty?
- Maureen O'Brien is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maureen O'Brien located?
- Maureen O'Brien's practice location on file with NPPES is 1001 W Seneca St, Ithaca, NY 14850-3342.
- What is Maureen O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Maureen O'Brien is (585) 273-7000.
- Does Maureen O'Brien accept Medicare?
- Maureen O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maureen O'Brien's NPI active?
- Yes — Maureen O'Brien's NPI (1669663274) is active in the NPPES registry as of the last update on 2024-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.