DR. MICHAEL O'BRIEN (M.D.) – Ophthalmology Physician, NPI 1417021940

DR. MICHAEL O'BRIEN (M.D.) is a healthcare provider. based in Warwick, Rhode Island. specializing in OPHTHALMOLOGY. They hold the professional credentials M.D.. They hold a License No. MD09575 (RI). The NPI Number for DR. MICHAEL O'BRIEN (M.D.) is 1417021940

Main info

Male
36 Years Of Experience
Accepts Medicare Assignment
Name
DR. MICHAEL O'BRIEN (M.D.)
NPI
1417021940
Phone
(401) 738-4800
Address
566 TOLL GATE RD
Enumeration Date
17 November 2006
Last Update Date
10 May 2026

Doctor Profile

Medical School Name
STATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Secondary Phone
4019436000
Graduation Year
1990 (36 years ago)
PAC ID
3375679921
Group Practice PAC ID
1153213921
Professional Enrollment ID
I20100407000401
Data current as of
3 June 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience62
Completeness85
Years active:19State licenses:1Digital endpointsOther names

89 OPHTHALMOLOGY in RI

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

  • 566, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States

    WARWICK, RI 028862716

    Phone: (401) 738-4800

    Fax: (401) 738-8153

    Type: Mailing

  • 166 Cass Ave Unit 1

    Woonsocket, RI 028954712

    Phone: (401) 769-2511

    Fax: (401) 769-7696

    Type: Location

  • 2000 Chapel View Blvd Ste 100

    Cranston, RI 029203091

    Phone: (401) 227-4010

    Fax: (401) 275-4972

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

CMS reports 10 Open Payments records for all available years, with a total value of $297.

Total Amount is formed as General ($297) + Research ($0) + Ownership ($0) = $297.

Last reported payment date: 2024-07-20 • Largest payer in this snapshot: Ocular Therapeutix, Inc. ($118).

Total Amount

$297

General + Research + Ownership

Payments

10

Total payment records

General Amount

$297

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-07-20

Latest reported date

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: 2010-04-07

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
I20100407000401IOphthalmologyRITBD

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
92134Imaging of retina612302$0
99214Established patient office or other outpatient visit, 30-39 minutes593261$0
67028Injection of drug into eye43181$0
92202Extended exam of the back part of the eye with optic nerve drawing402294$0
J0178Injection, aflibercept, 1 mg34030$0
View full utilization report →

Insurance plans in this area (ZIP 02886)

Loading plans...

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: 1153213921View full group profile
NameSpecialtyState
O P H T H A L M O L O G YFL
O P T O M E T R YMA
-RI
O P H T H A L M O L O G YRI
O P T O M E T R YRI
O P T O M E T R YRI
O P T O M E T R YRI
O P T O M E T R YRI
O P T O M E T R YRI
O P T O M E T R YRI

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

What unique ID ties claims to DR. MICHAEL O'BRIEN (M.D.)?
NPI 1417021940 is assigned to DR. MICHAEL O'BRIEN (M.D.) under the national enumeration system.
Is DR. MICHAEL O'BRIEN (M.D.)'s enrollment marked active?
An active flag here means the NPI record is not in a deactivated state.
What does DR. MICHAEL O'BRIEN (M.D.) treat or focus on?
Patients typically see DR. MICHAEL O'BRIEN (M.D.) under the specialty Ophthalmology Physician. Clinical services aligned with this taxonomy classification.
Does DR. MICHAEL O'BRIEN (M.D.) practice in Rhode Island?
You will see Warwick, Rhode Island on file for DR. MICHAEL O'BRIEN (M.D.) alongside any extra practice locations.
How can I contact DR. MICHAEL O'BRIEN (M.D.)?
Phone or fax may appear on the official NPI record when supplied — verify before relying on them.

Similar Providers

RICHARD LUCK (D.O.)

Ophthalmology Physician
Millennium Ophthalmology, 1504, Broadway, Hewlett, East Rockaway, Hempstead, Nassau County, New York, 11557, United States
NPI: 1588664379

DR. STEPHEN NELSON GRIMES (M.D.)

Ophthalmology Physician
Tollgate Hill Farm Road, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1730175415

Unknown Individual

Ophthalmology Physician
566, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1861461733
175, Paramount Drive, Raynham, Bristol County, Massachusetts, 02767, United States
NPI: 1538125414

DR. THOMAS RAYMOND LEDDY (MD)

Ophthalmology Physician
390, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1689631699

THOMAS R. LEDDY, M.D.,LLC

Ophthalmology Physician
390, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1275575748

DR. LAWRENCE EHRLICH (M.D.)

Ophthalmology Physician
566, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1790713410

DR. ARTHUR I GELTZER (MD)

Ophthalmology Physician
Tollgate Hill Farm Road, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1750399697

KENT OPHTHALMOLOGY, INC.

Ophthalmology Physician
220, Toll Gate Road, Apponaug Historic District, Apponaug, Warwick, Kent County, Rhode Island, 02886, United States
NPI: 1003911967