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2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1205839552 M.D.
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Mark Gersman, M.D.

Retina Specialist (Ophthalmology) Physician in Canton, Ohio.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 917 in Retina Specialist (Ophthalmology) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
562
Medicare Part D claims · 193 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.8/100
▲ 15 pts above national avg 83.5 · Exceptional
Industry payments
$774.95
29 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Mark Gersman, M.D. reported a CMS MIPS final score of 98.8/100 - above the 83.5 national average - and filed 562 Medicare Part D claims in 2023.

98.8/100
MIPS score · +15 vs avg
562
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.

Mark Gersman, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

99 ≥ 89th percentile 89% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

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

Where Mark Gersman, M.D. sits

This provider among retina specialist (ophthalmology) physician peers

Across the 548 retina specialist (ophthalmology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Mark Gersman, M.D. writes more Part D claims than 66% of them and scores higher on MIPS quality than 51% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100017.935.753.671.4Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 18Mark Gersman, M.D., Part D claim volume, percentile in specialty: 66 · MIPS quality, percentile: 51
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one retina specialist (ophthalmology) physician peer from a representative sample of 60; the gold marker is Mark Gersman, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Mark Gersman, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Mark Gersman, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/31/2005

NPI 1205839552

Primary specialty

Retina Specialist (Ophthalmology) Physician

Niche

917 US NPIs in this specialty

Medicare Part D claims

562 1% vs specialty avg

2023 prescription claims

Specialty avg: 558

MIPS final score

98.8/100 15.3 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Ohio

How Retina Specialist (Ophthalmology) Physician compares to other specialties among Ohio providers

Ohio providers
Case Manager/Care Coordinator10.9%Student in an Organized Heal…4.7%Licensed Practical Nurse4%Addiction (Substance Use Dis…3.5%Registered Nurse3.4%Pharmacist3.4%Retina Specialist (Ophthalmo…0%
Largest specialties in Ohio (% of in-state providers)

Medicare quality performance, MIPS

Mark Gersman, M.D.'s 2023 MIPS final score plotted against the Retina Specialist (Ophthalmology) Physician national average

High performer (top quartile)
MIPS Final Score
98.8/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%98.8%
MIPS final score (Retina Specialist (Ophthalmology) Physician) - 98.8/100 vs national avg 83.5
How MIPS and board certification work

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).

Mark Gersman, M.D. appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding M.D. credentials at 4676 DOUGLAS CIR NW, Canton, OH, 44718, with a listed phone of (330) 494-1116. NPI 1205839552 was issued on 05/31/2005.

Medicare Part D records for calendar year 2023 show 562 prescription claims written by this provider, covering 193 Medicare beneficiaries and totaling roughly $26K in drug spend, split 52% brand-name and 48% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.8/100 for the 2023 performance year (Quality 100), compared with the 83.5 average among clinicians with a measured score.

Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 917 enrolled providers across 48 states and an average of 558 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

4676 DOUGLAS CIR NW
Canton, OH 44718
(330) 494-1116

Provider Details

NPI 1205839552
Specialty Retina Specialist (Ophthalmology) Physician
Credentials M.D.
Gender Male
NPI Issued 05/31/2005

CMS Quality Score (MIPS)

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

98.8
Final Score
Measured-score avg: 83.5
100
Quality
96
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Mark Gersman, 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.

Vitreo-Retinal Consultants, Inc.
Canfield, OH
Wooster Ophthalmologists, Inc.
Wooster, OH

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 Mark Gersman, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$775

Largest payer

Apellis Pharmaceuticals, 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.

License & disciplinary context - Ohio OMB 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 ~48K Ohio medical licensees in 2023 - they are NOT specific to Mark Gersman, M.D.. To verify Mark Gersman, M.D.'s current license status, search the OMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

158
Total board actions, Ohio 2023
Across 154 cases
3.29
Actions per 1,000 licensees
Ohio statewide rate
probation
Most common action type
56 cases

OMB 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 Ohio disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

Mark Gersman, M.D. - brand share 52.0%
Retina Specialist (Ophthalmology) Physician average

52% brand-name claims vs 48% generic, on 562 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.

562
Total Claims
$26K
Total Drug Cost
193
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
737
Total Day Supply
18,685
Brand vs Generic
52% brand / 48% generic
Brand Drug Cost
$19K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.28
Gender Split
49% female / 51% male
Age Distribution
<65: 16, 65-74: 84, 75-84: 73, 85+: 20

Top Prescribed Drugs (Medicare Part D)

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

What Mark Gersman, M.D. 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
 200
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
94
Ofloxacin
 83
Latanoprost
 44
Ketorolac Tromethamine
 34
Timolol Maleate
 18
Moxifloxacin
Moxifloxacin Hcl
11

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

More Retina Specialist (Ophthalmology) Physician in OH → All providers in Ohio → Compare specialties →

Retina Specialist (Ophthalmology) Physician Overview

How Mark Gersman, M.D. fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.

917
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider

Mark Gersman, M.D.'s 562 claims are above the specialty average of 558.

Nearby Retina Specialist (Ophthalmology) Physician Providers in Ohio

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

Dr. Mashal Akhter
M.D.
Columbus, OH
Dr. Matthew Byun
M.D.
Columbus, OH
Dr. Colleen Cebulla
MD
Columbus, OH
Dr. Elizabeth Esparaz
MD
Kent, OH
Dr. Thomas Hull
MD
Cuyahoga Falls, OH

Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Ohio medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Retina Specialist (Ophthalmology) Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

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Frequently Asked Questions

What is Mark Gersman, M.D.'s specialty? ▼
Mark Gersman, M.D. specializes in Retina Specialist (Ophthalmology) Physician and practices in Canton, Ohio. Credentials: M.D..
How much does Mark Gersman, M.D. prescribe under Medicare Part D? ▼
In 2023, Mark Gersman, M.D. wrote 562 Medicare Part D claims totaling $26K in drug costs for 193 beneficiaries.
What is Mark Gersman, M.D.'s Medicare quality score? ▼
Mark Gersman, M.D. has a CMS MIPS Final Score of 98.8/100 (Quality: 100). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Mark Gersman, M.D. located? ▼
Mark Gersman, M.D. is located at 4676 DOUGLAS CIR NW, Canton, OH, 44718. Phone: (330) 494-1116.
What is Mark Gersman, M.D.'s NPI number? ▼
Mark Gersman, M.D.'s National Provider Identifier (NPI) is 1205839552, issued on 05/31/2005.
Does Mark Gersman, M.D. prescribe more brand-name or generic drugs? ▼
Mark Gersman, M.D.'s prescribing is 52% brand-name and 48% generic drugs by claim count, with $19K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US? ▼
There are 917 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does Mark Gersman, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Mark Gersman, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Neomycin-Polymyxin-Dexameth, Ofloxacin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Gersman, M.D. accept Medicare? ▼
Mark Gersman, M.D. appears in CMS Medicare data with 562 Part D claims and 193 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Gersman, M.D.'s credentials? ▼
Mark Gersman, M.D.'s NPI is 1205839552 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

View source datasets and methodology notes
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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.