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Dr. Gregory Scott Mcelroy , MD, PhD

Ophthalmology β€’ Durham, NC

Active NPI 1174914733 Individual Practitioner Male Practitioner
Practice location in NPPES

2351 Erwin Rd
Durham, NC 277054699

Call 9196848111 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

2351 Erwin Rd

Durham, NC 277054699

Telephone 9196848111
Organization at the Same NPPES Address or Phone
Duke Eye Center Facility NPI 1619031085

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Northwestern University Feinberg Medical School

Graduation Year

2022

30-day fills

20 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$440 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $62.06 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

4 years (graduated 2022)

CMS Doctors and Clinicians data list 2022 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2015

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

May accept Medicare assignment

CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Mcelroy has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Mcelroy as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Durham and North Carolina

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

Fewer Part D prescriptions than 90% of clinicians listed under Ophthalmology in Durham, NC (2024, 55 clinicians with data). Median for this group: 747. Middle half: 172 to 1,510.

Fewer Part D prescriptions than 95% of clinicians listed under Ophthalmology in North Carolina (2024, 458 clinicians with data). Median for this group: 948. Middle half: 321 to 1,928.

Part D drug cost

A lower Part D drug cost than 90% of clinicians listed under Ophthalmology in Durham, NC (2024, 55 clinicians with data). Median for this group: $40,524. Middle half: $4,926 to $161,729.

A lower Part D drug cost than 95% of clinicians listed under Ophthalmology in North Carolina (2024, 458 clinicians with data). Median for this group: $98,451. Middle half: $12,188 to $220,975.

91 active clinicians are listed under Ophthalmology with a practice address in Durham, NC (689 in North Carolina).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Durham

4.4% of these 91 clinicians have the CMS telehealth indicator.

67% of these 91 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $62.06.

Manufacturer Payment Nature Product Type Amount ($)
Bausch & Lomb Americas Inc.
Food and Beverage
In-kind items and services
Stellaris General $62.06

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Prednisolone Acetate Prednisolone Acetate 16 475 $440.02 14

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-03-13
Ophthalmology Primary Specialty

NUCC Taxonomy Code: 207W00000X

License # reported to NPPES NC 2026-01283

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: North Carolina Medical Board.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - OPHTHALMOLOGY

Medicare Enrollment ID

I20260611000927

Enrollment State Jurisdiction

NC

PECOS Control ID

0345622718

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

27 listed
Dr. Naseem Alavian , MD

Internal Medicine - Infectious Disease

NPI 1013352087

Doctor of Medicine (M.D.)

Alexander Arno

Nurse Anesthetist, Certified Registered

NPI 1013525492
Madison Bagley

Student in an Organized Health Care Education/Training Program

NPI 1003483991
NPI 1013174275

Doctor of Medicine (M.D.)

Dr. Sonali Bracken , MD, PhD

Student in an Organized Health Care Education/Training Program

NPI 1013449818

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Samantha Collins

Student in an Organized Health Care Education/Training Program

NPI 1013595024

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

11 Historical Events
πŸ“
Updated Practice Location March 13, 2026

Registered at 2351 ERWIN RD, DURHAM, NC 277054699 (Tel: 9196848111)

πŸ“
Updated Business Mailing Address March 13, 2026

Registered at 2301 ERWIN RD, DURHAM, NC 277054699 (Tel: 9196848111)

πŸ‘€
Provider Name / Credentials Updated March 13, 2026

Recorded as GREGORY MCELROY, MD/PHD

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 13, 2026

Ophthalmology (license number reported to NPPES: NC 2026-01283)

πŸ“
Updated Business Mailing Address February 22, 2022

Registered at 2301 ERWIN RD # 27710, DURHAM, NC 277054699 (Tel: 9196848111)

βœ…
NPI Profile Active February 17, 2015

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) February 17, 2015

Registered at 1333 W BARRY AVE APT 2R, CHICAGO, IL 606576757 (Tel: 2019564127)

πŸ“
Business Mailing Address (Initial Record) February 17, 2015

Registered at 1333 W BARRY AVE APT 2R, CHICAGO, IL 606576757 (Tel: 2019564127)

πŸ‘€
Provider Name / Credentials (Initial Record) February 17, 2015

Recorded as GREGORY MCELROY, MD/PHD CANDIDATE

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) February 17, 2015

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration February 17, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1174914733
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 17, 2015
Last Update: March 13, 2026
Sole Proprietor: No

Other Ophthalmology Specialists in Durham

All Ophthalmology Specialists in Durham

Mailing Address

2301 Erwin Rd

Durham, NC 277054699

Phone: 9196848111

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.