THOMAS PATRICK O'BRIEN PA-C
NPI 1225447626
Physician Assistant - Surgical in Plymouth, MA

Active since August 11, 2014PECOS Enrolled
23 WHITE ST, PLYMOUTH, MA 02360(774) 991-1400 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 10, 2025, Jul 25, 2022, Mar 17, 2018 and 2 more (5 updates tracked since 2017).

About Thomas Patrick O'brien Pa-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOMAS PATRICK O'BRIEN PA-C (NPI 1225447626) is an individual surgical provider in Plymouth, Massachusetts, licensed in Massachusetts (PA7872) and active in the NPI registry since August 2014. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225447626
Entity TypeIndividualMale
Primary Taxonomy363AS0400X
Provider Legal NameTHOMAS PATRICK O'BRIENCredential: PA-C
Location Address23 WHITE STPlymouth, MA 02360-5960
Mailing Address23 White StPlymouth, MA 02360-5960 · (774) 991-1400
Sole ProprietorYes
Enumeration DateAugust 11, 2014
Last NPPES UpdateNovember 10, 20255 updates tracked since enumeration
NPPES CertifiedNovember 10, 2025
NPI 1225447626 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyPhysician Assistant · SurgicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AS0400X
License Licensed in MA · PA7872
Also ListedSpecialist/Technologist · Athletic TrainerTaxonomy 2255A2300X · License 2416 (MA), AT00339 (RI)
Also ListedPhysician AssistantTaxonomy 363A00000X · License PA1851 (NV)
23 WHITE ST, Plymouth, MA 02360

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Thomas Patrick O'brien Pa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
3,432 services241 patients
Aspiration and/or injection of fluid from large joint 20610
This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.
449 services286 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
183 services149 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
166 services144 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
140 services140 patients
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202
This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.
51 services51 patients

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas O'brien's NPI number?

The NPI number for Thomas O'brien is 1225447626. It was assigned to this individual provider in the NPPES registry on August 11, 2014.

Where is Thomas O'brien located?

Thomas O'brien practices at 23 White St, Plymouth, MA 02360. The listed phone number is (774) 991-1400.

What is Thomas O'brien's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Surgical, with taxonomy code 363AS0400X.

Is Thomas O'brien enrolled in Medicare?

Yes. Thomas O'brien is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Thomas O'brien was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.