2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1649666561 MD
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GRACE HUANG, MD

Cornea and External Diseases Specialist Physician in PHILADELPHIA, Pennsylvania. 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
2K
Medicare Part D claims · 510 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
Industry payments
$96.87
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GRACE HUANG, MD reported a CMS MIPS final score of 100/100 — above the 83.1 national average — and filed 1,547 Medicare Part D claims in 2023.

100/100
MIPS score · +17 vs avg
2K
Part D claims, 2023
48%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

GRACE HUANG, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

100 Top 7% higher than 93% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

GRACE HUANG, MD 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).

What does the federal data show about GRACE HUANG, MD?

High performer (top quartile)

NPI registry status

Active

Issued 04/07/2015

NPI 1649666561

Primary specialty

Cornea and External Diseases Specialist Physician

Rare

294 US NPIs in this specialty

Medicare Part D claims

1,547 26% vs specialty avg

2023 prescription claims

Specialty avg: 1,232

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Pennsylvania

How Cornea and External Diseases Specialist Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Cornea and External Diseases Specialist Physician share within Pennsylvania

1. Cornea and External Diseases Specialist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cornea and External Diseases Specialist Physician share within Pennsylvania

Medicare quality performance — MIPS

GRACE HUANG, MD's 2023 MIPS final score plotted against the Cornea and External Diseases Specialist Physician national average

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

MIPS final score (Cornea and External Diseases Specialist Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Cornea and External Diseases Specialist Physician) — 100/100 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).

GRACE HUANG, MD appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding MD credentials at 2610 E ALLEGHENY AVE, PHILADELPHIA, PA, 19134, with a listed phone of (800) 448-6767. NPI 1649666561 was issued on 04/07/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HUANG 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 1,547 prescription claims written by this provider, covering 510 Medicare beneficiaries and totaling roughly $535K in drug spend, split 52% brand-name and 48% 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 100/100 for the 2023 performance year (Quality 92.8495, Cost 90.786), compared with the national average of 83.1.

Cornea and External Diseases Specialist Physician is a narrow specialty nationwide, with 294 enrolled providers across 43 states and an average of 1,232 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

2610 E ALLEGHENY AVE
PHILADELPHIA, PA 19134

Provider Details

NPI 1649666561
Specialty Cornea and External Diseases Specialist Physician
Credentials MD
Gender Female
NPI Issued 04/07/2015

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
92.8495
Quality
90.786
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where GRACE HUANG, MD 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.

PHILADELPHIA EYE ASSOCIATES
PHILADELPHIA, PA

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 GRACE HUANG, MD. Source: openpaymentsdata.cms.gov.

Total received

$97

Largest payer

Kerecis Limited

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.

License & disciplinary context — Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to GRACE HUANG, MD. To verify GRACE HUANG, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

GRACE HUANG, MD — brand share 52.0%
Specialty average (est.)

52% brand-name claims vs 48% generic, on 1,547 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.

1,547
Total Claims
$535K
Total Drug Cost
510
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,052
Total Day Supply
53,014
Brand vs Generic
52% brand / 48% generic
Brand Drug Cost
$513K
Generic Drug Cost
$22K

Patient Demographics

Average Patient Age
73.5 years
Avg HCC Risk Score
1.36
Gender Split
62% female / 38% male
Age Distribution
<65: 46, 65-74: 245, 75-84: 174, 85+: 45

Top Prescribed Drugs (Medicare Part D)

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

What GRACE HUANG, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Prednisolone Acetate
523
Ofloxacin
189
Ketorolac Tromethamine
163
Latanoprost
155
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
67
Restasis
Cyclosporine
64
Erythromycin
Erythromycin Base
51
Valacyclovir
Valacyclovir Hcl
42
Tobradex
Tobramycin/Dexamethasone
41
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
32

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

Cornea and External Diseases Specialist Physician Overview

How GRACE HUANG, MD fits within the Cornea and External Diseases Specialist Physician landscape nationally.

294
Cornea and External Diseases Specialist Physician Providers in US
43
States with Cornea and External Diseases Specialist Physician
1,232
Avg Claims per Provider

GRACE HUANG, MD's 1,547 claims are above the specialty average of 1,232.

Nearby Cornea and External Diseases Specialist Physician Providers in Pennsylvania

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

Compare Cornea and External Diseases Specialist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GRACE HUANG, MD's specialty?
GRACE HUANG, MD specializes in Cornea and External Diseases Specialist Physician and practices in PHILADELPHIA, Pennsylvania. Credentials: MD.
How much does GRACE HUANG, MD prescribe under Medicare Part D?
In 2023, GRACE HUANG, MD wrote 1,547 Medicare Part D claims totaling $535K in drug costs for 510 beneficiaries.
What is GRACE HUANG, MD's Medicare quality score?
GRACE HUANG, MD has a CMS MIPS Final Score of 100/100 (Quality: 92.8495, Cost: 90.786). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GRACE HUANG, MD located?
GRACE HUANG, MD is located at 2610 E ALLEGHENY AVE, PHILADELPHIA, PA, 19134. Phone: (800) 448-6767.
What is GRACE HUANG, MD's NPI number?
GRACE HUANG, MD's National Provider Identifier (NPI) is 1649666561, issued on 04/07/2015.
Does GRACE HUANG, MD prescribe more brand-name or generic drugs?
GRACE HUANG, MD's prescribing is 52% brand-name and 48% generic drugs by claim count, with $513K in brand drug costs.
How many Cornea and External Diseases Specialist Physician providers are there in the US?
There are 294 Cornea and External Diseases Specialist Physician providers across 43 states in the US. The average Cornea and External Diseases Specialist Physician provider writes 1,232 Medicare Part D claims per year.
What drugs does GRACE HUANG, MD prescribe most often?
Based on 2023 Medicare Part D data, GRACE HUANG, MD's most frequently prescribed drugs include Prednisolone Acetate, Ofloxacin, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GRACE HUANG, MD accept Medicare?
GRACE HUANG, MD appears in CMS Medicare data with 1,547 Part D claims and 510 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GRACE HUANG, MD's credentials?
GRACE HUANG, MD's NPI is 1649666561 with credentials MD. 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