MR. GREGORY A KOUYOUMDJIAN (M.D.) – Ophthalmology Physician, NPI 1548219934
Ophthalmology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
396 OPHTHALMOLOGY in CO
Provider Addresses for MR. GREGORY A KOUYOUMDJIAN (M.D.)
8381 SOUTHPARK LN
LITTLETON, CO 801204508
Phone: (303) 991-9662
Type: Mailing
850 ENGLEWOOD PKWY STE 100A
ENGLEWOOD, CO 801107328
Phone: (303) 991-9662
Type: Mailing
South Wadsworth Boulevard, Lakewood, Jefferson County, Colorado, 80226-2975, United States
LAKEWOOD, CO 80227
Phone: (303) 935-2020
Type: Mailing
South Wadsworth Boulevard, Marston, Denver, Jefferson County, Colorado, 80123, United States
LAKEWOOD, CO 80227
Phone: (303) 934-5835
Fax: (303) 934-0835
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 25 Open Payments records for all available years, with a total value of $753.
Total Amount is formed as General ($753) + Research ($0) + Ownership ($0) = $753.
Last reported payment date: 2024-12-03 • Largest payer in this snapshot: Horizon Therapeutics plc ($250).
Total Amount
$753
General + Research + Ownership
Payments
25
Total payment records
General Amount
$753
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Horizon Therapeutics plc | $250 |
| Alcon Vision LLC | $106 |
| Glaukos Corporation | $62 |
| Rayner Intraocular Lenses Limited | $50 |
| Amgen Inc. | $44 |
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: 2010-10-07
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
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20101007000565 | I | Ophthalmology | CO | TBD |
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.
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
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 66984 | Removal of cataract with insertion of prosthetic lens | 155 | 92 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 112 | 112 | $0 |
| 92136 | Measurement of corneal curvature and depth of eye | 102 | 102 | $0 |
| 99212 | Established patient office or other outpatient visit, 10-19 minutes | 73 | 43 | $0 |
| 66821 | Removal of recurring cataract in lens capsule using a laser | 70 | 56 | $0 |
Insurance plans in this area (ZIP 80120)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| U R O L O G Y | CO | |
| Oral Surgery | CO | |
| Otolaryngology, Plastic And Reconstructive Surgery | CO | |
| Urology, General Surgery | CO | |
| O P H T H A L M O L O G Y | CO | |
| Oral Surgery | CO | |
| Oral Surgery, Maxillofacial Surgery | CO | |
| Nurse Practitioner | CO | |
| O T O L A R Y N G O L O G Y | IL | |
| O P H T H A L M O L O G Y | GA |
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