2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1942206321 M.D.
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GERALD ROSEN, M.D.

Cornea and External Diseases Specialist Physician in CHARLOTTE, North Carolina. 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
1K
Medicare Part D claims · 343 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
49%
generic claims · 51% 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
$388.39
8 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GERALD ROSEN, M.D. is a Cornea and External Diseases Specialist Physician ([object Object]) practicing in CHARLOTTE, North Carolina with a Medicare Part D prescribing footprint of 1K claims across 343 beneficiaries — 51% brand-name prescribing . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $388.39 across 8 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GERALD ROSEN, M.D. reported a CMS MIPS final score of 100 out of 100, above the 83.1 national average, and filed 1,397 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)

GERALD ROSEN, 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).

GERALD ROSEN, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/22/2005

NPI 1942206321

Primary specialty

Cornea and External Diseases Specialist Physician

Rare

294 US NPIs in this specialty

Medicare Part D claims

1,397 13% 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 North Carolina

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

North Carolina providers

Cornea and External Diseases Specialist Physician share within North Carolina

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 North Carolina

Medicare quality performance — MIPS

GERALD ROSEN, M.D.'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).

GERALD ROSEN, M.D. is a Cornea and External Diseases Specialist Physician provider practicing in CHARLOTTE, North Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1942206321. 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.

GERALD ROSEN, M.D. appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding M.D. credentials at 135 S SHARON AMITY RD, CHARLOTTE, NC, 28211, with a listed phone of (704) 365-0555. NPI 1942206321 was issued on 06/22/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROSEN 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 1,397 prescription claims written by this provider, covering 343 Medicare beneficiaries and totaling roughly $108K in drug spend, split 51% brand-name and 49% 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 100), 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

135 S SHARON AMITY RD
CHARLOTTE, NC 28211

Provider Details

NPI 1942206321
Specialty Cornea and External Diseases Specialist Physician
Credentials M.D.
Gender Male
NPI Issued 06/22/2005

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
100
Quality

Reporting: Group practice

Hospital and facility affiliations

Facilities where GERALD ROSEN, 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.

HORIZON EYE CARE PA
CHARLOTTE, NC

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 GERALD ROSEN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$388

Largest payer

Amgen 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 · Brand-heavy

GERALD ROSEN, M.D. — brand share 51.0%
Specialty average (est.)

51% brand-name claims vs 49% generic, on 1,397 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.

1,397
Total Claims
$108K
Total Drug Cost
343
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,167
Total Day Supply
58,866
Brand vs Generic
51% brand / 49% generic
Brand Drug Cost
$82K
Generic Drug Cost
$26K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
75.7 years
Avg HCC Risk Score
1.40
Gender Split
62% female / 38% male
Age Distribution
<65: 15, 65-74: 140, 75-84: 142, 85+: 46

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
494
Latanoprost
161
Ofloxacin
121
Timolol Maleate
120
Valacyclovir
Valacyclovir Hcl
54
Erythromycin
Erythromycin Base
42
Acyclovir
41
Prolensa
Bromfenac Sodium
33
Difluprednate
31
Moxifloxacin
Moxifloxacin Hcl
26

* 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 GERALD ROSEN, M.D. 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

GERALD ROSEN, M.D.'s 1,397 claims are above the specialty average of 1,232.

Nearby Cornea and External Diseases Specialist Physician Providers in North Carolina

Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as ROSEN.

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

Frequently Asked Questions

What is GERALD ROSEN, M.D.'s specialty?
GERALD ROSEN, M.D. specializes in Cornea and External Diseases Specialist Physician and practices in CHARLOTTE, North Carolina. Credentials: M.D..
How much does GERALD ROSEN, M.D. prescribe under Medicare Part D?
In 2023, GERALD ROSEN, M.D. wrote 1,397 Medicare Part D claims totaling $108K in drug costs for 343 beneficiaries.
What is GERALD ROSEN, M.D.'s Medicare quality score?
GERALD ROSEN, M.D. has a CMS MIPS Final Score of 100/100 (Quality: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GERALD ROSEN, M.D. located?
GERALD ROSEN, M.D. is located at 135 S SHARON AMITY RD, CHARLOTTE, NC, 28211. Phone: (704) 365-0555.
What is GERALD ROSEN, M.D.'s NPI number?
GERALD ROSEN, M.D.'s National Provider Identifier (NPI) is 1942206321, issued on 06/22/2005.
Does GERALD ROSEN, M.D. prescribe more brand-name or generic drugs?
GERALD ROSEN, M.D.'s prescribing is 51% brand-name and 49% generic drugs by claim count, with $82K 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 GERALD ROSEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GERALD ROSEN, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Latanoprost, Ofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GERALD ROSEN, M.D. accept Medicare?
GERALD ROSEN, M.D. appears in CMS Medicare data with 1,397 Part D claims and 343 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GERALD ROSEN, M.D.'s credentials?
GERALD ROSEN, M.D.'s NPI is 1942206321 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