DR. GREGORY J LOUIS (M.D.) – Specialist, NPI 1346237344

DR. GREGORY J LOUIS (M.D.) is a healthcare provider. based in Euclid, Ohio. specializing in OPHTHALMOLOGY. They hold the professional credentials M.D.. They hold a License No. 35052070 (OH). The NPI Number for DR. GREGORY J LOUIS (M.D.) is 1346237344

Main info

Male
43 Years Of Experience
Accepts Medicare Assignment
Name
DR. GREGORY J LOUIS (M.D.)
NPI
1346237344
Phone
(216) 574-8900
Address
26300 EUCLID AVE
Enumeration Date
4 October 2005
Last Update Date
9 February 2010

Doctor Profile

Medical School Name
UNIVERSITY OF CINCINNATI COLLEGE OF MEDICINE
Secondary Phone
51398451333741
Graduation Year
1983 (43 years ago)
PAC ID
3274428065
Group Practice PAC ID
0749186427
Professional Enrollment ID
I20130306000311
Address ID
OH452425664BL1945XDRXX300
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

840 OPHTHALMOLOGY in OH

Loading map...

Provider Addresses for DR. GREGORY J LOUIS (M.D.)

  • Euclid Office and Medical Plaza, 26300, Euclid Avenue, Upson Park, Euclid, Cuyahoga County, Ohio, 44132, United States

    SUITE 312

    EUCLID, OH 441323708

    Phone: (216) 574-8900

    Fax: (216) 731-2627

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

CMS reports 4 Open Payments records for all available years, with a total value of $86.

Total Amount is formed as General ($86) + Research ($0) + Ownership ($0) = $86.

Last reported payment date: 2024-03-20 • Largest payer in this snapshot: ABBVIE INC. ($46).

Total Amount

$86

General + Research + Ownership

Payments

4

Total payment records

General Amount

$86

General payments

Research Amount

$0

Research funding

Ownership Amount

$0

Ownership interests

Ownership Count

0

Ownership records

Last Payment Date

2024-03-20

Latest reported date

Top Companies

Largest payers in this snapshot

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: 2013-03-06

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
I20130306000311IOphthalmologyOHTBD

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
99213Established patient office or other outpatient visit, 20-29 minutes1,014897$0
92250Photography of the retina581571$0
92083Exam of visual field with extended testing280279$0
92134Imaging of retina253246$0
66984Removal of cataract with insertion of prosthetic lens207140$0
View full utilization report →

Insurance plans in this area (ZIP 44132)

Loading plans...

Provider's Procedures

DR. GREGORY J LOUIS (M.D.) performs procedures in OPHTHALMOLOGY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
OPHTHALMOLOGYOH92083Measurement of field of vision during daylight conditions494451
OPHTHALMOLOGYOH92134Diagnostic imaging of retina123120

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: 0749186427View full group profile
NameSpecialtyState
O P H T H A L M O L O G YOH
O P T O M E T R YKY
O P T O M E T R YOH
-OH
O P H T H A L M O L O G YOH
O P H T H A L M O L O G YMI
-OH
O P H T H A L M O L O G YOH
O P H T H A L M O L O G YOH
-OH

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

Can I cross-check DR. GREGORY J LOUIS (M.D.) using NPI 1346237344?
NPI 1346237344 belongs to DR. GREGORY J LOUIS (M.D.); compare other details if you need extra assurance.
Is there an active status for DR. GREGORY J LOUIS (M.D.)?
For scheduling context, DR. GREGORY J LOUIS (M.D.) is shown as active in the registry.
What expertise is attributed to DR. GREGORY J LOUIS (M.D.)?
DR. GREGORY J LOUIS (M.D.)'s specialty line reads Other Service Providers. Clinical services aligned with this taxonomy classification.
Is DR. GREGORY J LOUIS (M.D.) associated with Euclid?
Public fields place DR. GREGORY J LOUIS (M.D.) around Euclid, Ohio. Always confirm the exact site before visiting.
What does 2 location(s) imply?
2 practice locations appear in the available data.

Similar Providers

XIMENA VALDES (MD)

Pediatric Cardiology Physician
Euclid Avenue, Brooklyn, Kings County, New York, 11208, United States
NPI: 1912900903
Euclid Office and Medical Plaza, 26300, Euclid Avenue, Upson Park, Euclid, Cuyahoga County, Ohio, 44132, United States
NPI: 1275520322
Euclid Office and Medical Plaza, 26300, Euclid Avenue, Upson Park, Euclid, Cuyahoga County, Ohio, 44132, United States
NPI: 1275520330
26250, Euclid Avenue, Euclid, Cuyahoga County, Ohio, 44132, United States
NPI: 1295724847

DR. MARIA T ESPINOSA (MD)

Hematology & Oncology Physician
24701, Euclid Avenue, Euclid, Cuyahoga County, Ohio, 44117, United States
NPI: 1164411716

DR. EDWARD M JR. BARKSDALE (MD)

Pediatric Surgery Physician
4440 W 95th St
NPI: 1871565762

DR. MARGARET D LARKINS-PETTIGREW (MD)

Obstetrics & Gynecology Physician
1307 FEDERAL ST STE B201
NPI: 1700850013
36100 Euclid Ave Ste 350
NPI: 1851340822
275 SPRINGSIDE DR STE 100
NPI: 1124077540