MICHAEL J O'BRIEN (M.D.) – Sports Medicine (Internal Medicine) Physician, NPI 1952335606

MICHAEL J O'BRIEN (M.D.) is a healthcare provider. based in Boston, Massachusetts. specializing in SPORTS MEDICINE, INTERNAL MEDICINE. They hold the professional credentials M.D.. They hold a License No. 213465 (MA). The NPI Number for MICHAEL J O'BRIEN (M.D.) is 1952335606

Main info

Male
27 Years Of Experience
Accepts Medicare Assignment
Name
MICHAEL J O'BRIEN (M.D.)
NPI
1952335606
Phone
(617) 355-3501
Address
319 LONGWOOD AVE
Enumeration Date
10 July 2006
Last Update Date
6 June 2008

Doctor Profile

Medical School Name
STATE UNIVERSITY OF NEW YORK AT BUFFALO SCHOOL OF MEDICINE
Secondary Phone
6173556000
Graduation Year
1999 (27 years ago)
PAC ID
9234185497
Group Practice PAC ID
7719901198
Professional Enrollment ID
I20050330000961
Address ID
MA021155724BO300XXAVEX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

164 SPORTS MEDICINE in MA

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Provider Addresses for MICHAEL J O'BRIEN (M.D.)

  • Quest Diagnostics, 319, Longwood Avenue, Boston, Suffolk County, Massachusetts, 02115, United States

    6TH FLOOR

    BOSTON, MA 021155728

    Phone: (617) 355-3501

    Fax: (617) 355-0176

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

CMS reports 1 Open Payments records for all available years, with a total value of $15.

Total Amount is formed as General ($15) + Research ($0) + Ownership ($0) = $15.

Last reported payment date: 2024-08-15 • Largest payer in this snapshot: DePuy Synthes Sales Inc. ($15).

Total Amount

$15

General + Research + Ownership

Payments

1

Total payment records

General Amount

$15

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-08-15

Latest reported date

Top Companies

Largest payers in this snapshot

CompanyAmount
DePuy Synthes Sales Inc.$15
View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2005-03-30

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20050330000961ISports MedicineMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
20610Aspiration and/or injection of fluid from large joint5919$0
J7323Hyaluronan or derivative, euflexxa, for intra-articular injection, per dose5615$0
99213Established patient office or other outpatient visit, 20-29 minutes1712$0
View full utilization report →

Insurance plans in this area (ZIP 02115)

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Provider's Procedures

MICHAEL J O'BRIEN (M.D.) performs procedures in SPORTS MEDICINE. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
SPORTS MEDICINEMA20610Aspiration and/or injection of large joint or joint capsule6222

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 7719901198View full group profile
NameSpecialtyState
Orthopedic SurgeryMA
Sports Medicine, Emergency MedicineMA
Physician AssistantMA
Clinical PsychologistMA
Orthopedic Surgery, Sports MedicineMA
Physical Therapist In Private PracticeIL
Internal Medicine, Sports MedicineMA
-MA
Orthopedic Surgery, Sports MedicineMA
Orthopedic SurgeryMA

Reviews

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Frequently asked questions

How is MICHAEL J O'BRIEN (M.D.) identified in CMS data?
CMS-hosted NPPES data lists MICHAEL J O'BRIEN (M.D.) with NPI 1952335606.
Is MICHAEL J O'BRIEN (M.D.) listed as active for patients and plans?
The listing shows MICHAEL J O'BRIEN (M.D.) as active in the NPI system.
What is MICHAEL J O'BRIEN (M.D.)'s specialty?
The listing groups MICHAEL J O'BRIEN (M.D.) with Sports Medicine (Internal Medicine) Physician. Clinical services aligned with this taxonomy classification.
Does MICHAEL J O'BRIEN (M.D.) list a practice location?
Patients near Boston, Massachusetts may find MICHAEL J O'BRIEN (M.D.) in results; validate coverage separately.
What does 'Individual Provider' mean on this profile?
Entity type tells you whether the number belongs to a person or an organization.

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