Patrick O'Brien, PA-C
NPI 1134577141 · Surgical Physician Assistant · Springfield, MA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick O'Brien, PA-C is a Surgical Physician Assistant provider in Springfield, MA (NPI 1134577141).
Provider details
- NPI number
- 1134577141
- Entity type
- Individual
- Primary specialty
- Surgical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Surgical Physician Assistant363AS0400X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 68 | 64 |
| Ondansetronbrand: Ondansetron Odt | 44 | 42 |
| Tramadol Hcl | 26 | 24 |
| Cefadroxil | 23 | 22 |
| Celecoxib | 23 | 21 |
| Tranexamic Acid | 20 | 20 |
| Gabapentin | 19 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$64 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-31
- Last updated
- 2021-01-18
- Certified
- 2021-01-18
Frequently asked questions
- What is Patrick O'Brien's NPI number?
- Patrick O'Brien's National Provider Identifier (NPI) is 1134577141, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick O'Brien's specialty?
- Patrick O'Brien is listed in the NPPES registry with a primary specialty of Surgical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Patrick O'Brien located?
- Patrick O'Brien's practice location on file with NPPES is 271 Carew St, Springfield, MA 01104-2377.
- What is Patrick O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Patrick O'Brien is (413) 452-6251.
- Does Patrick O'Brien accept Medicare?
- Patrick 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 Patrick O'Brien's NPI active?
- Yes — Patrick O'Brien's NPI (1134577141) is active in the NPPES registry as of the last update on 2021-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.