Dr. G Gregory Clark, MD
- Medicare services, 2021
- 245
- Part D claims, 2021
- 294
- Industry payments
- $631
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 9002 N Meridian St Ste 112 Suite 112, Indianapolis, IN 46260
- Practice phone
- Call (317) 843-9005
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Visionary Eye Specialists
Eye care practice · Indianapolis, Indiana
Find Dr. Clark's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. G Gregory Clark is an ophthalmologist in Cleveland, Ohio
Dr. Clark practices at Visionary Eye Specialists in Indianapolis, Indiana.
Dr. Clark's NPI, 1679642912, was assigned on November 8, 2006. Dr. Clark holds Indiana license 0132124A.
- NPI
- 1679642912NPI Registry (opens in a new tab)
- NPI enumeration date
- November 8, 2006
- NPI status
- Active
- Practice phone
- (317) 843-9005
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. G Gregory Clark practices in Indianapolis and Cleveland
Dr. Clark's primary practice is Visionary Eye Specialists, at 9002 N Meridian St Ste 112 Suite 112, Indianapolis, IN 46260. The practice phone is (317) 843-9005. The NPI Registry lists Dr. Clark's practice address as 2500 Metro Health Dr, Cleveland, OH 44109.
- Visionary Eye SpecialistsPrimary9002 N Meridian St Ste 112 Suite 112, Indianapolis, IN 46260Phone(317) 843-9005
- NPI Registry address2500 Metro Health Dr, Cleveland, OH 44109 · Cuyahoga CountyPhone(317) 843-9005
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. G Gregory Clark is affiliated with 1 site of care and 1 medical group
Dr. Clark's primary practice is Visionary Eye Specialists in Indianapolis, Indiana. Dmand AI also links Dr. Clark to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. G Gregory Clark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clark practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Visionary Eye Specialists | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. G Gregory Clark is one of 658 ophthalmologists in Ohio
Ophthalmology is Dr. Clark's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Clark is licensed in Indiana.
Specialties and state licenses
- Ophthalmology, IndianaPrimary
Ophthalmologists near Dr. Clark
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. G Gregory Clark billed Medicare for 245 services in 2021
CMS data shows 245 Medicare services from Dr. Clark across 4 procedure codes in 2021. Medicare paid $8,195 for them. Every service was in an office.
Dr. Clark's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 1,1842021: 23180%
- Tests and treatments
- 2020: 1712021: 1492%
- Surgery
- 2020: 132021: 0100%
Dr. Clark compared with the Ohio median for ophthalmologists, 2021
- Dr. Clark
- Ohio median
- Medicare services
- 245vs 1,18579% below
- Part D claims
- 294vs 64154% below
Medians across 673 ophthalmologists in Ohio with Dmand AI profiles that report each measure.
Dr. Clark's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Clark and other ophthalmologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. G Gregory Clark's patients have a median age of 80
Across all payers, Dmand AI patient panel data puts Dr. Clark's median patient age at 80, with 59% women.
Dr. Clark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
Patient panel by sex, all payers
- Women59%
- Men41%
Source: Dmand AI Patient Panel Data
Dr. G Gregory Clark wrote 294 Medicare Part D claims in 2021
In 2021, Dr. Clark wrote 294 Medicare Part D claims. They cover 6 drugs, with $74,445 in total drug cost. In 2020, CMS named 764 claims across 18 drugs.
Dr. Clark's most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 7642021: 29462%
Drugs named by CMS: 6 in 2021, 18 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. G Gregory Clark received $631 in industry payments from 2016 to 2020
CMS Open Payments shows 15 general payments to Dr. Clark from 7 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 94% of the total. Aerie Pharmaceuticals, Inc. paid the most, $284.
General payments to Dr. Clark by program year, 2016 to 2020
General payments to Dr. Clark by kind, 2016 to 2020
- Food and beverage$59494%
- Education$386%
Companies that paid Dr. Clark the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. G Gregory Clark's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. G Gregory Clark
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. G Gregory Clark's NPI number?
Dr. G Gregory Clark's NPI number is 1679642912. It was assigned on November 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. G Gregory Clark?
Dr. G Gregory Clark is an ophthalmologist in Cleveland, Ohio. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. G Gregory Clark practice?
Dr. Clark practices at 9002 N Meridian St Ste 112 Suite 112, Indianapolis, IN 46260. Dr. Clark also practices at 2500 Metro Health Dr, Cleveland, OH 44109. Dr. Clark's primary practice is Visionary Eye Specialists in Indianapolis, Indiana. Dmand AI also links Dr. Clark to 1 medical group.
What is Dr. G Gregory Clark's office phone number?
The practice phone on file for Dr. Clark is (317) 843-9005.
What is Dr. G Gregory Clark's medical license number?
Dr. Clark holds Indiana license 0132124A.
Does Dr. G Gregory Clark accept Medicare?
Yes. CMS data shows Dr. Clark billed Medicare for 245 services in 2021.
What services does Dr. G Gregory Clark bill to Medicare?
In 2021, Dr. Clark's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and eye exam or test (92133).
What drugs does Dr. G Gregory Clark prescribe most?
In 2021 Medicare Part D data, Dr. Clark's most prescribed drugs by claims were Latanoprost, Combigan and Lumigan.
Has Dr. G Gregory Clark received payments from drug or device companies?
CMS Open Payments shows $631 in general payments to Dr. Clark from 7 companies from 2016 to 2020. The largest total came from Aerie Pharmaceuticals, Inc.
How long has Dr. G Gregory Clark been practicing?
Dr. Clark's NPI was assigned in 2006.
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