NPI registry status
Active
2026 NPPES data Corneal and Contact Management Optometrist NPI 1417952037 O.D.
Verify on CMS → Martin Gresak, O.D.
Corneal and Contact Management Optometrist in Morgantown, West Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,548 in Corneal and Contact Management Optometrist, 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
150
Medicare Part D claims · 35 beneficiaries · Corneal and Contact Management Optometrist avg: 235
Generic prescribing
73%
generic claims · 27% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$177.68
6 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Martin Gresak, O.D. filed 150 Medicare Part D claims in 2023 as a Corneal and Contact Management Optometrist in Morgantown, West Virginia, prescribing 73% generic.
- 150
- Part D claims, 2023
- 73%
- generic prescribing
- $177.68
- industry payments (Sunshine Act)
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.
Martin Gresak, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
150 35th percentile higher than 35% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Martin Gresak, O.D.?
Quality data not reportedPrimary specialty
Corneal and Contact Management Optometrist
Medicare Part D claims
150 36% vs specialty avg
Specialty distribution in West Virginia
How Corneal and Contact Management Optometrist compares to other specialties among West Virginia providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Corneal and Contact Management Optometrist. Verify directly:
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).
Martin Gresak, O.D. appears in the CMS NPPES registry as a Corneal and Contact Management Optometrist provider holding O.D. credentials at 918 CHESTNUT RIDGE RD, Morgantown, WV, 26505, with a listed phone of (304) 599-2828. NPI 1417952037 was issued on 06/20/2005.
Medicare Part D records for calendar year 2023 show 150 prescription claims written by this provider, covering 35 Medicare beneficiaries and totaling roughly $30K in drug spend, split 27% brand-name and 73% generic by claim count.
Corneal and Contact Management Optometrist is a narrow specialty nationwide, with 1,548 enrolled providers across 52 states and an average of 235 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
Provider Details
| NPI | 1417952037 |
|---|---|
| Specialty | Corneal and Contact Management Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 06/20/2005 |
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 Martin Gresak, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$178
Largest payer
Bausch & Lomb Americas 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
Martin Gresak, O.D. - brand share 27.0%
Corneal and Contact Management Optometrist average
27% brand-name claims vs 73% generic, on 150 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.
150
Total Claims
$30K
Total Drug Cost
35
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 271
- Total Day Supply
- 7,694
- Brand vs Generic
- 27% brand / 73% generic
- Brand Drug Cost
- $22K
- Generic Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 75.3 years
- Avg HCC Risk Score
- 0.99
- Gender Split
- 46% female / 54% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Martin Gresak, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
51 claims
- Timolol Maleate
Timolol Maleate
31 claims
- Travoprost 17
Travoprost
17 claims
- Restasis 11
Restasis
11 claims
| Drug | Claims |
|---|---|
| Latanoprost | 51 |
| Timolol Maleate | 31 |
| Travoprost | 17 |
| Restasis Cyclosporine | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Corneal and Contact Management Optometrist in WV →
All providers in West Virginia →
Compare specialties →
Corneal and Contact Management Optometrist Overview
How Martin Gresak, O.D. fits within the Corneal and Contact Management Optometrist landscape nationally.
1,548
Corneal and Contact Management Optometrist Providers in US
52
States with Corneal and Contact Management Optometrist
235
Avg Claims per Provider
Martin Gresak, O.D.'s 150 claims are below the specialty average of 235.
Nearby Corneal and Contact Management Optometrist Providers in West Virginia
Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as Gresak.
Dr. Mark Cinalli
OD
Parkersburg, WV
Dr. Lynn Engle-Laneve
O.D.
Charleston, WV
Dr. Ronald Frame
OD
Parkersburg, WV
Dr. Dennis Hedrick
O.D.
Charleston, WV
Dr. Mitchell Koerber
OD
Williamstown, WV
Compare Corneal and Contact Management Optometrist 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 West Virginia medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Corneal and Contact Management Optometrist 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 Martin Gresak, O.D.'s specialty? ▼
Martin Gresak, O.D. specializes in Corneal and Contact Management Optometrist and practices in Morgantown, West Virginia. Credentials: O.D..
How much does Martin Gresak, O.D. prescribe under Medicare Part D? ▼
In 2023, Martin Gresak, O.D. wrote 150 Medicare Part D claims totaling $30K in drug costs for 35 beneficiaries.
Where is Martin Gresak, O.D. located? ▼
Martin Gresak, O.D. is located at 918 CHESTNUT RIDGE RD, Morgantown, WV, 26505. Phone: (304) 599-2828.
What is Martin Gresak, O.D.'s NPI number? ▼
Martin Gresak, O.D.'s National Provider Identifier (NPI) is 1417952037, issued on 06/20/2005.
Does Martin Gresak, O.D. prescribe more brand-name or generic drugs? ▼
Martin Gresak, O.D.'s prescribing is 27% brand-name and 73% generic drugs by claim count, with $22K in brand drug costs.
How many Corneal and Contact Management Optometrist providers are there in the US? ▼
There are 1,548 Corneal and Contact Management Optometrist providers across 52 states in the US. The average Corneal and Contact Management Optometrist provider writes 235 Medicare Part D claims per year.
What drugs does Martin Gresak, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Martin Gresak, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Travoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Martin Gresak, O.D. accept Medicare? ▼
Martin Gresak, O.D. appears in CMS Medicare data with 150 Part D claims and 35 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Martin Gresak, O.D.'s credentials? ▼
Martin Gresak, O.D.'s NPI is 1417952037 with credentials O.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.
- 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
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.