Dr. Gregg A. Feinerman, MD

  • Irvine, CA
  • Ophthalmologist
NPI1649214826PAC ID1557402526
Medicare services, 2024
2,633
Medicare patients, 2024
1,021
Part D claims, 2024
2,010
Publications
5
Clinical trials
2
Practice address
3500 Barranca Parkway, Suite #130, Irvine, CA 92606
Practice phone
Call (949) 552-6266
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Barranca Surgery Center

Surgery Center - Medicare-Certified · Irvine, California

See all 3 affiliations

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Dr. Gregg A. Feinerman is an ophthalmologist in Irvine, California

Dr. Feinerman practices at Barranca Surgery Center in Irvine, California.

Dr. Feinerman's NPI, 1649214826, was assigned on June 16, 2006. Dr. Feinerman graduated from George Washington University School of Medicine and Health Sciences in 1994. Dr. Feinerman holds California license A60533.

NPI and contact details
Medicare PAC ID
1557402526
NPI enumeration date
June 16, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(949) 552-6266
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
58
Medical school graduation
1994

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Gregg A. Feinerman practices at Barranca Surgery Center in Irvine, California

Dr. Feinerman's primary practice is Barranca Surgery Center, at 3500 Barranca Parkway, Suite #130, Irvine, CA 92606. The practice phone is (949) 552-6266.

  • Barranca Surgery Center
    3500 Barranca Parkway, Suite #130, Irvine, CA 92606Phone(949) 552-6266

Source: Dmand AI Affiliation Data

Dr. Gregg A. Feinerman is affiliated with 2 sites of care and 1 medical group

Dr. Feinerman's primary practice is Barranca Surgery Center in Irvine, California. Dmand AI also links Dr. Feinerman to 1 group practice or clinic and 1 medical group, each named with a free account.

Barranca Surgery CenterSurgery Center - Medicare-Certified · Irvine, CaliforniaPrimary
1 group practice or clinicName with a free account1 medical groupName with a free accountParent health systemName with a free account
See all 3 affiliations for Dr. Feinerman

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Gregg A. Feinerman's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Feinerman practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Barranca Surgery CenterAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Gregg A. Feinerman is one of 2,621 ophthalmologists in California

Ophthalmology is Dr. Feinerman's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Feinerman is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Feinerman's licenses on file in 2 states: California and Hawaii.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense A60533 · 1996 to 2026 · taxonomy 207W00000X
  • Hawaii license2008 to 2026

Clinical focus

Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Feinerman treats.

Ophthalmologists near Dr. Feinerman

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. Gregg A. Feinerman billed Medicare for 2,633 services in 2024

CMS data shows 2,633 Medicare services from Dr. Feinerman across 11 procedure codes in 2024, for 1,021 Medicare patients. Medicare paid $292,967 for them.

Medicare services, 20242,633
Medicare patients1,021
Paid by Medicare$292,967
Procedure codes11

Dr. Feinerman's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Tests and treatments
2023: 2,2462024: 2,2832%
Surgery
2023: 3642024: 3504%

Where Dr. Feinerman's Medicare services took place, 2024

  • In an office2,42992%
  • In a facility2048%

Dr. Feinerman compared with the California median for ophthalmologists, 2024

  • Dr. Feinerman
  • California median
Medicare services
2,633vs 1,0792.4 times
Medicare patients
1,021vs 4212.4 times
Part D claims
1,915vs 6183.1 times

Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.

Dr. Feinerman's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Feinerman

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Gregg A. Feinerman treated 1,021 Medicare patients in 2024, average age 77

CMS counts 1,021 Medicare patients who saw Dr. Feinerman in 2024. The largest group is 75 to 84, with 487 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 2% are also on Medicaid. Their average risk score is 0.97, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Feinerman's median patient age at 73, with 50% women.

Medicare patients, 20241,021
Average age77
Average risk score0.97
Also on Medicaid2%

Dr. Feinerman's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Feinerman's Medicare patients by sex, 2024

  • Women61160%
  • Men41040%

Chronic conditions among Dr. Feinerman's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure66%
  3. Arthritis48%
  4. Ischemic heart disease26%
  5. Cancer22%
  6. Diabetes21%
  7. Osteoporosis17%
  8. Anxiety15%

Share of Medicare patients with each condition. A patient can have several.

Dr. Feinerman's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 73

Patient panel by sex, all payers

  • Women50%
  • Men49%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Gregg A. Feinerman wrote 2,010 Medicare Part D claims in 2024

In 2024, Dr. Feinerman wrote 2,010 Medicare Part D claims for 499 patients. 52% of them were for generic drugs. CMS names the drug for 1,915 of them, across 26 drugs with 11 or more claims each, at $182,111 in total drug cost. In 2023, CMS named 1,880 claims across 20 drugs.

Part D claims, 20242,010
Drugs named by CMS26
Total drug cost$182,111
Part D patients499

Dr. Feinerman's Part D claims by kind of drug, 2024

  • Generic1,042 claims52%
  • Brand-name968 claims48%

Dr. Feinerman's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Feinerman's Part D claims, 2024

  • Antibiotics2%44 of 2,010 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,8802024: 1,9152%

Drugs named by CMS: 26 in 2024, 20 in 2023.

See all prescribing by Dr. Feinerman

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Gregg A. Feinerman scored 94 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Feinerman for performance year 2024, reported as part of a group. Dr. Feinerman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 295 procedures of cataract surgery by Dr. Feinerman, more than 89% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. Feinerman's MIPS scores, performance year 2024

  • 94of 100Final score
  • 97.8of 100Quality
  • 40of 100Improvement Activities
  • 82of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Feinerman ranks in Medicare procedure volume

Cataract surgery
89th percentile295 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Gregg A. Feinerman has 5 publications on record

Dmand AI links 5 papers to Dr. Feinerman, published from 2018 to 2024. 2018 was the busiest year, with 2. Dr. Feinerman's most frequent co-authors are Harvey Lee Carter, MD, James A. Davies, MD and Michael John Endl, MD.

Papers5
Years published2018 to 2024

Dr. Feinerman's most frequent co-authors

Recent publications by Dr. Feinerman

See all 5 publications and co-authors

See who Dr. Feinerman researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Feinerman works with, so you can find a warm path to the right ophthalmologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Gregg A. Feinerman has worked on 2 clinical trials

Dmand AI links Dr. Feinerman to 2 clinical trials. Conditions studied include Cataract and Lens Diseases. Bausch & Lomb Incorporated sponsors the most, 2. Open Payments lists research payments to Dr. Feinerman that name 2 trials.

Conditions in Dr. Feinerman's trials

  • Cataract
  • Lens Diseases

Investigators on the most trials with Dr. Feinerman

Recent clinical trials with Dr. Feinerman

Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Gregg A. Feinerman received $75,675 in industry payments from 2016 to 2025

CMS Open Payments shows 249 general payments to Dr. Feinerman from 29 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 82% of the total. RxSight Inc paid the most, $60,205. It also lists 10 research payments totaling $12,308 from 2017 to 2020, naming 2 clinical trials.

General payments to Dr. Feinerman by program year, 2016 to 2025

General payments to Dr. Feinerman by kind, 2016 to 2025

$75.7Kin total
  • Consulting fees$62,09082%
  • Food and beverage$6,0808%
  • Debt forgiveness$6,0598%
  • Speaker and faculty fees$7501%
  • Other$6501%

Companies that paid Dr. Feinerman the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Feinerman

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Gregg A. Feinerman has 3 awards and honors on record

Dmand AI lists 3 awards for Dr. Feinerman, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Feinerman

  1. 2013
    • CMS Stage 1 EHR
  2. Undated
    • AAO Fellow
    • ACS Fellow

Source: Dmand AI Professional Profile Data

Dr. Gregg A. Feinerman graduated from George Washington University School of Medicine and Health Sciences

Dr. Feinerman graduated from George Washington University School of Medicine and Health Sciences in 1994. Dr. Feinerman is a member of AAO and ACS.

  1. Medical schoolGeorge Washington University School of Medicine and Health Sciences
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology

Source: Dmand AI Professional Profile Data

Dr. Gregg A. Feinerman accepts plans from 14 insurance carriers

Dr. Feinerman is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

  • Aetna
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • Regence Health Plans
  • +6 more carriersWith a free account

Plan types Dr. Feinerman accepts, by number of carriers

  1. PPO10
  2. Medicare8
  3. HMO6
  4. EPO4
  5. POS2

Source: Dmand AI Insurance Network Data

Sources for Dr. Gregg A. Feinerman's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Gregg A. Feinerman

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. Gregg A. Feinerman's NPI number?

Dr. Gregg A. Feinerman's NPI number is 1649214826. It was assigned on June 16, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Gregg A. Feinerman?

Dr. Gregg A. Feinerman is an ophthalmologist in Irvine, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Dr. Gregg A. Feinerman practice?

Dr. Feinerman practices at 3500 Barranca Parkway, Suite #130, Irvine, CA 92606. Dr. Feinerman's primary practice is Barranca Surgery Center in Irvine, California. Dmand AI also links Dr. Feinerman to 1 group practice or clinic and 1 medical group.

What is Dr. Gregg A. Feinerman's office phone number?

The practice phone on file for Dr. Feinerman is (949) 552-6266.

What is Dr. Gregg A. Feinerman's medical license number?

Dr. Feinerman holds California license A60533, one of the licenses on file in 2 states.

Which states has Dr. Gregg A. Feinerman been licensed in?

Dmand AI has state licenses on file for Dr. Feinerman in California (1996 to 2026) and Hawaii (2008 to 2026).

Does Dr. Gregg A. Feinerman accept Medicare?

Yes. CMS data shows Dr. Feinerman billed Medicare for 2,633 services in 2024, and Dr. Feinerman accepts Medicare assignment.

What is Dr. Gregg A. Feinerman's MIPS score?

Dr. Feinerman's MIPS final score for performance year 2024 is 94 out of 100, reported as part of a group.

How many Medicare patients does Dr. Gregg A. Feinerman see?

CMS counts 1,021 Medicare patients who saw Dr. Feinerman in 2024, with an average age of 77.

Is Dr. Gregg A. Feinerman board certified?

Yes. Dr. Feinerman is board certified in ophthalmology by the American Board of Ophthalmology.

Show 8 more questionsShow fewer questions

What services does Dr. Gregg A. Feinerman bill to Medicare?

In 2024, Dr. Feinerman's most billed Medicare services were eye exam or test (92014), eye exam or test (92012) and eye exam or test (92133).

Where did Dr. Gregg A. Feinerman go to medical school?

Dr. Feinerman graduated from George Washington University School of Medicine and Health Sciences in 1994.

What drugs does Dr. Gregg A. Feinerman prescribe most?

In 2024 Medicare Part D data, Dr. Feinerman's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Ofloxacin.

Has Dr. Gregg A. Feinerman received payments from drug or device companies?

CMS Open Payments shows $75,675 in general payments to Dr. Feinerman from 29 companies from 2016 to 2025. The largest total came from RxSight Inc.

How long has Dr. Gregg A. Feinerman been practicing?

Dr. Feinerman graduated from medical school in 1994, 32 years ago.

Does Dr. Gregg A. Feinerman do research?

Dmand AI links 5 publications to Dr. Feinerman, published from 2018 to 2024. Dr. Feinerman has worked on 2 clinical trials.

Who does Dr. Gregg A. Feinerman publish with?

Dr. Feinerman's most frequent co-authors are Harvey Lee Carter, MD (1 shared paper), James A. Davies, MD (1 shared paper) and Michael John Endl, MD (1 shared paper).

What insurance does Dr. Gregg A. Feinerman accept?

Dr. Feinerman is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.

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