2026 NPPES data Ophthalmology Physician NPI 1780048173 M.D.
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GREGORY FU, M.D.

Ophthalmology Physician in ROCKVILLE, Maryland. 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
305
Medicare Part D claims · 94 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75.3274/100
▼ 8 pts below national avg 83.1 · [object Object]
Industry payments
$1.1K
39 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GREGORY FU, M.D. is a Ophthalmology Physician ([object Object]) practicing in ROCKVILLE, Maryland with a Medicare Part D prescribing footprint of 305 claims across 94 beneficiaries — 38% brand-name prescribing . Their CMS MIPS Final Score of 75.3274/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.1K across 39 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GREGORY FU, M.D. reported a CMS MIPS final score of 75.3274 out of 100, below the 83.1 national average, and filed 305 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)

GREGORY FU, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GREGORY FU, M.D. at a glance

Below national average

NPI registry status

Active

Issued 04/11/2016

NPI 1780048173

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

305 79% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

75.3274/100 7.772599999999997% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maryland

How Ophthalmology Physician compares to other specialties among Maryland providers

Maryland providers

Ophthalmology Physician share within Maryland

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

Medicare quality performance — MIPS

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

Below national average
MIPS Final Score
75.3274/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 75.3274/100 vs national avg 83.1

0%100%National avg83%75.3%
MIPS final score (Ophthalmology Physician) — 75.3274/100 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).

GREGORY FU, M.D. is a Ophthalmology Physician provider practicing in ROCKVILLE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1780048173. 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.

GREGORY FU, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 15005 SHADY GROVE RD STE 100, ROCKVILLE, MD, 20850, with a listed phone of (301) 279-9696. NPI 1780048173 was issued on 04/11/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FU 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 305 prescription claims written by this provider, covering 94 Medicare beneficiaries and totaling roughly $81K in drug spend, split 38% brand-name and 62% 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 75.3274/100 for the 2023 performance year (Quality 100, Cost 17.758), 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

15005 SHADY GROVE RD STE 100
ROCKVILLE, MD 20850

Provider Details

NPI 1780048173
Specialty Ophthalmology Physician
Credentials M.D.
Gender Male
NPI Issued 04/11/2016

CMS Quality Score (MIPS)

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

75.3274
Final Score
Avg: 83.1
100
Quality
17.758
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where GREGORY FU, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ROBERT C. FELDMAN, MD, PA
ROCKVILLE, MD

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GREGORY FU, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.1K

Largest payer

Mallinckrodt Hospital Products Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

GREGORY FU, M.D. — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 305 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.

305
Total Claims
$81K
Total Drug Cost
94
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
553
Total Day Supply
15,832
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$70K
Generic Drug Cost
$11K

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
1.05
Gender Split
67% female / 33% 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
Latanoprost
92
Timolol Maleate
31
Restasis
Cyclosporine
29
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
24
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
23
Travoprost
14
Tobramycin-Dexamethasone
Tobramycin/Dexamethasone
13
Prednisolone Acetate
12
Olopatadine Hcl
11

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

Ophthalmology Physician Overview

How GREGORY FU, 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

GREGORY FU, M.D.'s 305 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Maryland

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

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

Frequently Asked Questions

What is GREGORY FU, M.D.'s specialty?
GREGORY FU, M.D. specializes in Ophthalmology Physician and practices in ROCKVILLE, Maryland. Credentials: M.D..
How much does GREGORY FU, M.D. prescribe under Medicare Part D?
In 2023, GREGORY FU, M.D. wrote 305 Medicare Part D claims totaling $81K in drug costs for 94 beneficiaries.
What is GREGORY FU, M.D.'s Medicare quality score?
GREGORY FU, M.D. has a CMS MIPS Final Score of 75.3274/100 (Quality: 100, Cost: 17.758). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GREGORY FU, M.D. located?
GREGORY FU, M.D. is located at 15005 SHADY GROVE RD STE 100, ROCKVILLE, MD, 20850. Phone: (301) 279-9696.
What is GREGORY FU, M.D.'s NPI number?
GREGORY FU, M.D.'s National Provider Identifier (NPI) is 1780048173, issued on 04/11/2016.
Does GREGORY FU, M.D. prescribe more brand-name or generic drugs?
GREGORY FU, M.D.'s prescribing is 38% brand-name and 62% generic drugs by claim count, with $70K 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 GREGORY FU, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GREGORY FU, M.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Restasis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY FU, M.D. accept Medicare?
GREGORY FU, M.D. appears in CMS Medicare data with 305 Part D claims and 94 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY FU, M.D.'s credentials?
GREGORY FU, M.D.'s NPI is 1780048173 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