Gregory A. Kouyoumdjian, M.D.
Ophthalmology Physician · Littleton, CO
Gregory A. Kouyoumdjian, M.D. is an ophthalmology physician with a practice address in Littleton, Colorado, and NPI 1548219934, issued on May 10, 2006. Check the license (Colorado 38767, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory A. Kouyoumdjian
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 38767 CO
0064496 CO
Self-reported in NPPES; status is on the state search - Practice location
- 8381 Southpark LN, Littleton, CO 80120
- Phone
- (303) 991-9662
- Enumerated
- May 10, 2006
- Record last updated
- Jun 1, 2023
- Medicaid ID
- 465288 CO
- Medicare enrollment
- Enrolled (PECOS I20101007000565); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1996
- Entity
- Type 1 · individual
Also registered at 8381 Southpark LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Fish, M.D.Ophthalmology Physician1285707034
- Kellie HammerTechnician/Technologist1023534195
- Barbara Lewis, CRNACertified Registered Nurse Anesthetist1366467631
- Stephanie Muylaert, MDGlaucoma Specialist (Ophthalmology) Physician1659533511
Verify Gregory A. Kouyoumdjian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 38767Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average ophthalmology physician in 2024
244 Medicare Part D claims for 99 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Prednisolone Acetate55 claims
- Valacyclovir27 claims
- Fluorometholone24 claims
- Timolol Maleate16 claims
- Flarex15 claims
- Tobramycin-Dexamethasone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $242.73
10 payments; by number, the most common kind was food and beverage; the largest payer was Rayner Intraocular Lenses Limited. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Glaucoma Consultants OF Colorado PCParker, CO
- Trauma And Emergency Subspecialty Surgeons PLLCLone Tree, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ophthalmology Physician providers in Colorado
There are 338 ophthalmology physician records in Colorado.
Other ophthalmology physician records in Colorado
- John Adams, M.D.Greeley, CO1407829179
- Antoni Allen, M.D.Wheat Ridge, CO1548499049
- Christopher Allen, M.D.Colorado Springs, CO1326083585
- Howard Amiel, M.D., M.S.Denver, CO1306964317
- John Ammons, M.D.Denver, CO1386687390
- Erik Anderson, M.D.Colorado Springs, CO1538423652
- Joshua Apple, M.D.Fort Collins, CO1023307048
- Patrick Arnold, M.D.Fort Collins, CO1225034671
- Matthew Asano, M.D.Fort Collins, CO1679860225
- Genie Bang, M.D.Denver, CO1366618548
Common questions
What is Gregory A. Kouyoumdjian, M.D.'s NPI number?
Gregory A. Kouyoumdjian, M.D.'s National Provider Identifier (NPI) is 1548219934, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Kouyoumdjian, M.D. located?
The NPPES record lists a practice address at 8381 Southpark LN, Littleton, CO, 80120. Phone: (303) 991-9662. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Kouyoumdjian, M.D.'s license?
NPPES lists Colorado license number 38767, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory A. Kouyoumdjian, M.D. prescribe under Medicare Part D?
In 2024, Gregory A. Kouyoumdjian, M.D. had 244 Medicare Part D claims for 99 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Gregory A. Kouyoumdjian, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.