NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1033135108 M.D.
Verify on CMS → Robert Groat, M.D.
Ophthalmology Physician in Greensboro, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 22,082 in 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
4K
Medicare Part D claims · 744 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$340.5
15 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Robert Groat, M.D. filed 3,933 Medicare Part D claims in 2023 as a Ophthalmology Physician in Greensboro, North Carolina, prescribing 70% generic.
- 4K
- Part D claims, 2023
- 70%
- generic prescribing
- $340.5
- 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.
Robert Groat, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,933 Top 9% higher than 91% 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
◑
Board-eligible specialty (heuristic, not verified)
Robert Groat, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Robert Groat, M.D.?
Quality data not reportedPrimary specialty
Ophthalmology Physician
Medicare Part D claims
3,933 177% vs specialty avg
Specialty distribution in North Carolina
How Ophthalmology Physician compares to other specialties among North Carolina 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 Ophthalmology Physician. 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).
Robert Groat, M.D. appears in the CMS NPPES registry as an Ophthalmology Physician provider holding M.D. credentials at 1317 N ELM ST, Greensboro, NC, 27401, with a listed phone of (336) 378-1442. NPI 1033135108 was issued on 07/14/2006.
Medicare Part D records for calendar year 2023 show 3,933 prescription claims written by this provider, covering 744 Medicare beneficiaries and totaling roughly $420K in drug spend, split 30% brand-name and 70% generic by claim count.
Ophthalmology Physician is a mid-sized specialty nationwide, with 22,082 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
Provider Details
| NPI | 1033135108 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/14/2006 |
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 Robert Groat, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$341
Largest payer
Alcon Vision LLC
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
Robert Groat, M.D. - brand share 30.0%
Ophthalmology Physician average
30% brand-name claims vs 70% generic, on 3,933 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.
3,933
Total Claims
$420K
Total Drug Cost
744
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,733
- Total Day Supply
- 192,438
- Brand vs Generic
- 30% brand / 70% generic
- Brand Drug Cost
- $342K
- Generic Drug Cost
- $79K
- Antibiotic Claims
- 18
Patient Demographics
- Average Patient Age
- 77.2 years
- Avg HCC Risk Score
- 1.47
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 47, 65-74: 242, 75-84: 290, 85+: 165
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Robert Groat, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
1,728 claims
- Dorzolamide-Timolol
Dorzolamide-Timolol
776 claims
- Lumigan 181
Lumigan
181 claims
- Timolol Maleate 179
Timolol Maleate
179 claims
- Brimonidine Tartrate 155
Brimonidine Tartrate
155 claims
- Dorzolamide Hcl 80
Dorzolamide Hcl
80 claims
- Cromolyn Sodium 74
Cromolyn Sodium
74 claims
- Rocklatan 65
Rocklatan
65 claims
| Drug | Claims |
|---|---|
| Latanoprost | 1,728 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 776 |
| Lumigan Bimatoprost | 181 |
| Timolol Maleate | 179 |
| Brimonidine Tartrate | 155 |
| Dorzolamide Hcl | 80 |
| Cromolyn Sodium | 74 |
| Rocklatan Netarsudil Mesylat/Latanoprost | 65 |
| Rhopressa Netarsudil Mesylate | 61 |
| Restasis Cyclosporine | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Robert Groat, M.D. fits within the Ophthalmology Physician landscape nationally.
22,082
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider
Robert Groat, M.D.'s 3,933 claims are above the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Groat.
Dr. Brian Adair
M.D.
Hickory, NC
Dr. Lindsay Adam
M.D.
Raleigh, NC
Modupe Adetunji
Durham, NC
Dr. Richard Akers
M.D.
Gastonia, NC
Dr. Richard Akers
M.D.
Morganton, NC
Compare 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 North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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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How insurance networks affect your costs
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Explore North Carolina
Frequently Asked Questions
What is Robert Groat, M.D.'s specialty? ▼
Robert Groat, M.D. specializes in Ophthalmology Physician and practices in Greensboro, North Carolina. Credentials: M.D..
How much does Robert Groat, M.D. prescribe under Medicare Part D? ▼
In 2023, Robert Groat, M.D. wrote 3,933 Medicare Part D claims totaling $420K in drug costs for 744 beneficiaries.
Where is Robert Groat, M.D. located? ▼
Robert Groat, M.D. is located at 1317 N ELM ST, Greensboro, NC, 27401. Phone: (336) 378-1442.
What is Robert Groat, M.D.'s NPI number? ▼
Robert Groat, M.D.'s National Provider Identifier (NPI) is 1033135108, issued on 07/14/2006.
Does Robert Groat, M.D. prescribe more brand-name or generic drugs? ▼
Robert Groat, M.D.'s prescribing is 30% brand-name and 70% generic drugs by claim count, with $342K in brand drug costs.
How many Ophthalmology Physician providers are there in the US? ▼
There are 22,082 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 Robert Groat, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Robert Groat, M.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Groat, M.D. accept Medicare? ▼
Robert Groat, M.D. appears in CMS Medicare data with 3,933 Part D claims and 744 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Groat, M.D.'s credentials? ▼
Robert Groat, M.D.'s NPI is 1033135108 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.
- 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 PlainDoctor editorial team.
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.