2026 NPPES data Ophthalmology Physician NPI 1154379600 M.D.
Verify on CMS →

C. GILBERT, M.D.

Ophthalmology Physician in FARMINGTON, Connecticut. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
763
Medicare Part D claims · 237 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.9322/100
▲ 11 pts above national avg 83.1 · [object Object]
What the federal data reveals: C. GILBERT, M.D. is a Ophthalmology Physician ([object Object]) practicing in FARMINGTON, Connecticut with a Medicare Part D prescribing footprint of 763 claims across 237 beneficiaries — 39% brand-name prescribing . Their CMS MIPS Final Score of 93.9322/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: C. GILBERT, M.D. reported a CMS MIPS final score of 93.9322 out of 100, above the 83.1 national average, and filed 763 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

C. GILBERT, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

C. GILBERT, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 05/05/2006

NPI 1154379600

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

763 46% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

93.9322/100 10.8322% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Connecticut

How Ophthalmology Physician compares to other specialties among Connecticut providers

Connecticut providers

Ophthalmology Physician share within Connecticut

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Connecticut

Medicare quality performance — MIPS

C. GILBERT, M.D.'s 2023 MIPS final score plotted against the Ophthalmology Physician national average

High performer (top quartile)
MIPS Final Score
93.9322/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 93.9322/100 vs national avg 83.1

0%100%National avg83%93.9%
MIPS final score (Ophthalmology Physician) — 93.9322/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

C. GILBERT, M.D. is a Ophthalmology Physician provider practicing in FARMINGTON, Connecticut, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1154379600. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

C. GILBERT, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 499 FARMINGTON AVE, FARMINGTON, CT, 06032, with a listed phone of (860) 678-0202. NPI 1154379600 was issued on 05/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GILBERT most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 763 prescription claims written by this provider, covering 237 Medicare beneficiaries and totaling roughly $235K in drug spend, split 39% brand-name and 61% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.9322/100 for the 2023 performance year (Quality 100, Cost 79.7741), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

499 FARMINGTON AVE
FARMINGTON, CT 06032

Provider Details

NPI 1154379600
Specialty Ophthalmology Physician
Credentials M.D.
Gender Male
NPI Issued 05/05/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

93.9322
Final Score
Avg: 83.1
100
Quality
79.7741
Cost

Reporting: Group practice

Brand vs generic prescribing mix · Above average

C. GILBERT, M.D. — brand share 39.0%
Specialty average (est.)

39% brand-name claims vs 61% generic, on 763 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

763
Total Claims
$235K
Total Drug Cost
237
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,447
Total Day Supply
39,760
Brand vs Generic
39% brand / 61% generic
Brand Drug Cost
$213K
Generic Drug Cost
$22K

Patient Demographics

Average Patient Age
77.5 years
Avg HCC Risk Score
1.21
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Prednisolone Acetate
134
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
122
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
87
Latanoprost
75
Loteprednol Etabonate
31
Difluprednate
28
Erythromycin
Erythromycin Base
28
Restasis
Cyclosporine
26
Ofloxacin
24
Timolol Maleate
24

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Ophthalmology Physician Overview

How C. GILBERT, M.D. fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

C. GILBERT, M.D.'s 763 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Connecticut

Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as GILBERT.

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is C. GILBERT, M.D.'s specialty?
C. GILBERT, M.D. specializes in Ophthalmology Physician and practices in FARMINGTON, Connecticut. Credentials: M.D..
How much does C. GILBERT, M.D. prescribe under Medicare Part D?
In 2023, C. GILBERT, M.D. wrote 763 Medicare Part D claims totaling $235K in drug costs for 237 beneficiaries.
What is C. GILBERT, M.D.'s Medicare quality score?
C. GILBERT, M.D. has a CMS MIPS Final Score of 93.9322/100 (Quality: 100, Cost: 79.7741). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is C. GILBERT, M.D. located?
C. GILBERT, M.D. is located at 499 FARMINGTON AVE, FARMINGTON, CT, 06032. Phone: (860) 678-0202.
What is C. GILBERT, M.D.'s NPI number?
C. GILBERT, M.D.'s National Provider Identifier (NPI) is 1154379600, issued on 05/05/2006.
Does C. GILBERT, M.D. prescribe more brand-name or generic drugs?
C. GILBERT, M.D.'s prescribing is 39% brand-name and 61% generic drugs by claim count, with $213K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does C. GILBERT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, C. GILBERT, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Neomycin-Polymyxin-Dexameth, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does C. GILBERT, M.D. accept Medicare?
C. GILBERT, M.D. appears in CMS Medicare data with 763 Part D claims and 237 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify C. GILBERT, M.D.'s credentials?
C. GILBERT, M.D.'s NPI is 1154379600 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology