MR. GREGORY A KOUYOUMDJIAN M.D.
NPI 1548219934
Ophthalmology in Littleton, CO

Q: What is Gregory Kouyoumdjian's NPI number?

The NPI number for Gregory Kouyoumdjian is 1548219934. It was assigned to this individual provider in the NPPES registry on May 10, 2006.

Q: What is Gregory Kouyoumdjian's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Active since May 10, 2006PECOS EnrolledAccepts Medicare Assignment

93.2/100

CMS Quality Rating

8381 SOUTHPARK LN, LITTLETON, CO 80120(303) 991-9662 Get Directions Write a Review

NPPES record last updated: June 1, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 1, 2023, Mar 7, 2023, Feb 23, 2016 (3 updates tracked since 2016).

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About Mr. Gregory A Kouyoumdjian M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. GREGORY A KOUYOUMDJIAN M.D. (NPI 1548219934) is an individual ophthalmology provider in Littleton, Colorado, licensed in Colorado (38767) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (1996).

NPPES Registry Identity

NPI1548219934

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameMR. GREGORY A KOUYOUMDJIANCredential: M.D.

Location Address8381 SOUTHPARK LNLittleton, CO 80120-4508

Mailing Address8381 Southpark LnLittleton, CO 80120-4508 · (303) 991-9662

Phone(303) 991-9662

Sole ProprietorNo

Medical School CMSNew York University School Of MedicineGraduated 1996

Enumeration DateMay 10, 2006

Last NPPES UpdateJune 1, 20233 updates tracked since enumeration

NPPES CertifiedJune 1, 2023

✔ NPI 1548219934 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CO · 38767

Definition

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.

Also ListedOphthalmology · Glaucoma SpecialistTaxonomy 207WX0009X · License 0064496 (CO)

8381 SOUTHPARK LN, Littleton, CO 80120

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Other Identifiers 1

Medicaid465288CO

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Gregory A Kouyoumdjian M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012073968

PECOS Enrollment IDI20101007000565

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Gregory Kouyoumdjian reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Denver Ophthalmology Center, Inc.

Same address

Ophthalmology

8381 SOUTHPARK LN
Littleton, CO 80120

Reassigned Medicare billing, Colorado enrollment
6 clinicians in this Medicare group

NPI 1073679478 (303) 991-9662

Trauma And Emergency Subspecialty Surgeons PLLC

0.9 mi

Plastic Surgery Within the Head and Neck

1745 SHEA CENTER DR, SUITE 400
Highlands Ranch, CO 80129

Reassigned Medicare billing, Colorado enrollment
58 clinicians in this Medicare group

NPI 1740543933 (303) 774-1974

Glaucoma Consultants Of Colorado, PC

8.5 mi

Ophthalmology

11961 LIONESS WAY
Parker, CO 80134

Reassigned Medicare billing, Colorado enrollment
12 clinicians in this Medicare group

NPI 1447201009 (303) 794-1111

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

123 services73 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

97 services78 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

90 services85 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

80 services79 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

69 services46 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

57 services49 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

52 services38 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

42 services39 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

39 services39 patients

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

24 services24 patients

Ct scan of cornea 92025

A CT scan of the cornea is a non-invasive imaging test that uses X-rays to capture detailed pictures of your eye's cornea. It helps in diagnosing diseases or damage, planning for surgery, or evaluating the results of a treatment. It's a safe and painless procedure.

24 services22 patients

Release of scar tissue between lens and retina using a laser 67031

This procedure involves using a laser to break up scar tissue that has formed between the lens and retina in your eye. This can help improve your vision by allowing light to reach the retina more effectively. It's a safe and common treatment for certain eye conditions.

21 services14 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

20 services20 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$72.20 typical visit price

range $18.88 – $142.79

Typical copayment $18.05 (range $4.72 – $35.69)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.2/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

99.12

Improvement Activities

Cost

78.5

Reported Quality Measures

Age-Related Macular Degeneration (AMD): Dilated Macular Examination

100%26 patients5/55-star benchmark: 100%

Cataracts: 20/40 or Better Visual Acuity within 90 Days Following Cataract Surgery

96%147 patients3/55-star benchmark: 100%

Complications After Cataract Surgery

Lower rates are better for this measure.

0%331 patients

Diabetes: Eye Exam

96%72 patients4/55-star benchmark: 100%

Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)

Lower rates are better for this measure.

27%49 patients4/55-star benchmark: 91%

Use of High-Risk Medications in Older Adults

Lower rates are better for this measure.

Patients appropriateDiagnosis: 0% · 638 patients

Patients totalRate: 0% · 638 patients

0%638 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KELLIE HAMMER

Technician/Technologist