Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Patrick W. O'Brien, PA-C

Individual provider Surgical Physician Assistant · NPI 1134577141

Patrick W. O'Brien, PA-C is a Physician Assistant in Springfield, Massachusetts. Qualified in 2016, 10 years ago. Practices with Riverbend Medical Group Inc, a 224-clinician group and accepts Medicare assignment. Licensed in Connecticut and Massachusetts.

Years since qualifying
10
Licensed in
CT, MA
In the registry since
2016
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

271 Carew St
Springfield, MA 01104-2377
Phone: (413) 748-7353
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Physician Assistant (primary) Taxonomy 363AS0400X (MA)
Surgical Physician Assistant Taxonomy 363AS0400X (CT)

Record details

NPI number1134577141
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMay 31, 2016
Last updated in NPPESJuly 31, 2026
Certification dateJuly 31, 2026
Mailing address271 Carew St, Department Of Surgery, Springfield, MA 01104-2377

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Riverbend Medical Group Inc — 224 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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