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ALEXIS PAIGE O'BRIEN PHYSICIAN ASSISTANT
NPI 1386231520
Physician Assistant - Medical in Milford, MA

Active since December 22, 2020PECOS EnrolledAccepts Medicare Assignment
14 PROSPECT ST, MILFORD, MA 01757(508) 473-1190 Get Directions Write a Review

NPPES record last updated: August 28, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 14, 2022, Dec 22, 2020 (2 updates tracked since 2020).

About Alexis Paige O'brien Physician Assistant NPPES

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

ALEXIS PAIGE O'BRIEN PHYSICIAN ASSISTANT (NPI 1386231520) is an individual medical provider in Milford, Massachusetts, licensed in Massachusetts (PA8531) and active in the NPI registry since December 2020. She is enrolled in Medicare PECOS, is affiliated with Milford Regional Medical Center, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1386231520
Entity TypeIndividualFemale
Primary Taxonomy363AM0700X
Provider Legal NameALEXIS PAIGE O'BRIENCredential: PHYSICIAN ASSISTANT
Location Address14 PROSPECT STMilford, MA 01757-3003
Mailing Address9 Industrial Rd Ste 5Milford, MA 01757-3736 · (508) 473-1480
Phone(508) 473-1190
Sole ProprietorYes
Medical School CMSOtherGraduated 2021
Enumeration DateDecember 22, 2020
Last NPPES UpdateAugust 28, 20252 updates tracked since enumeration
NPPES CertifiedAugust 28, 2025
✔ NPI 1386231520 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPhysician Assistant · MedicalPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363AM0700X
License✔ Licensed in MA · PA8531
Also ListedPhysician AssistantTaxonomy 363A00000X · License PA8531 (MA)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
14 PROSPECT ST, Milford, MA 01757
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexis Paige O'brien Physician Assistant is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1658767249
PECOS Enrollment IDI20220407001226
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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
150 services112 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
146 services144 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
89 services64 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
48 services47 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
34 services34 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Milford Regional Medical Center

Acute Care Hospitals · Milford, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220090
Location14 Prospect StreetMilford, MA 01757 · Worcester County
Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SETH WAKEFIELD MD
Internal Medicine
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 473-1190
SONIA MCCARTHY RD, LDN
Dietitian, Registered (Nutrition, Obesity and Weight Management)
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 473-1190
MONA S KADDIS M.D.
Internal Medicine (Hematology & Oncology)
14 PROSPECT ST, 2ND FLOOR
MILFORD, MA 01757
Worcester County (508) 478-2061
VERA HERNANDEZ-HOLMES PA-C, RD
Physician Assistant (Medical)
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 473-1190
MR. MONZOLESSO JOEL BAGAH-KOGNAGBA MD
Internal Medicine
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 473-1190
ADALIA JUN-O'CONNELL M.D.
Psychiatry & Neurology (Vascular Neurology)
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 381-5016
MAURA JEAN EATON PT, DPT
Physical Therapist
14 PROSPECT ST
MILFORD, MA 01757
Worcester County (508) 442-2552
MILFORD IMAGING, INC.
Specialist
14 PROSPECT ST, DEPARTMENT OF RADIOLOGY
MILFORD, MA 01757
Worcester County (508) 422-2922

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 Alexis O'brien's NPI number?

The NPI number for Alexis O'brien is 1386231520. It was assigned to this individual provider in the NPPES registry on December 22, 2020.

Where is Alexis O'brien located?

Alexis O'brien practices at 14 Prospect St, Milford, MA 01757. The listed phone number is (508) 473-1190.

What is Alexis O'brien's specialty?

The primary specialty registered for this NPI is Physician Assistant, specializing in Medical, with taxonomy code 363AM0700X.

Is Alexis O'brien enrolled in Medicare?

Yes. Alexis O'brien is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Alexis O'brien affiliated with any hospitals?

According to CMS data, Alexis O'brien is affiliated with Milford Regional Medical Center.

When was this NPI record last updated?

The NPPES record for Alexis O'brien was last updated on August 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.