NPI registry status
Active
2026 NPPES data Optometrist NPI 1790979672 O.D.
Verify on CMS → Gregory Mann, O.D.
Optometrist in Tecumseh, Nebraska.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 60,484 in 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
93
Medicare Part D claims · 19 beneficiaries · Optometrist avg: 257
Generic prescribing
51%
generic claims · 49% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Gregory Mann, O.D. filed 93 Medicare Part D claims in 2023 as a Optometrist in Tecumseh, Nebraska, prescribing 51% generic.
- 93
- Part D claims, 2023
- 51%
- generic prescribing
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.
Gregory Mann, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
93 0th percentile higher than 0% 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 Gregory Mann, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
93 64% vs specialty avg
Specialty distribution in Nebraska
How Optometrist compares to other specialties among Nebraska 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 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).
Gregory Mann, O.D. appears in the CMS NPPES registry as an Optometrist provider holding O.D. credentials at 131 N 3RD ST, Tecumseh, NE, 68450, with a listed phone of (402) 335-2022. NPI 1790979672 was issued on 09/04/2007.
Medicare Part D records for calendar year 2023 show 93 prescription claims written by this provider, covering 19 Medicare beneficiaries and totaling roughly $4K in drug spend, split 49% brand-name and 51% generic by claim count.
Optometrist is a high-volume specialty nationwide, with 60,484 enrolled providers across 56 states and an average of 257 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 | 1790979672 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 09/04/2007 |
Brand vs generic prescribing mix · Above average
Gregory Mann, O.D. - brand share 49.0%
Optometrist average
49% brand-name claims vs 51% generic, on 93 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.
93
Total Claims
$4K
Total Drug Cost
19
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 155
- Total Day Supply
- 4,555
- Brand vs Generic
- 49% brand / 51% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 87.3 years
- Avg HCC Risk Score
- 1.13
- Age Distribution
- <65: 0, 65-74: N/A, 75-84: N/A, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Latanoprost | 59 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Gregory Mann, O.D. fits within the Optometrist landscape nationally.
60,484
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider
Gregory Mann, O.D.'s 93 claims are below the specialty average of 257.
Nearby Optometrist Providers in Nebraska
Other clinicians with the same primary specialty enrolled in Nebraska, drawn from the same CMS NPPES roster as Mann.
Dr. James Acker
O.D.
Cozad, NE
Dr. Brian Adam
OD
Lincoln, NE
Dr. Ginny Ahrens
O.D.
Elkhorn, NE
Dr. Steven Alcorn
O.D.
Fremont, NE
Dr. Edgar Alderman
O.D.
Minden, NE
Compare 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 Nebraska medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
Telehealth Guide
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Frequently Asked Questions
What is Gregory Mann, O.D.'s specialty? ▼
Gregory Mann, O.D. specializes in Optometrist and practices in Tecumseh, Nebraska. Credentials: O.D..
How much does Gregory Mann, O.D. prescribe under Medicare Part D? ▼
In 2023, Gregory Mann, O.D. wrote 93 Medicare Part D claims totaling $4K in drug costs for 19 beneficiaries.
Where is Gregory Mann, O.D. located? ▼
Gregory Mann, O.D. is located at 131 N 3RD ST, Tecumseh, NE, 68450. Phone: (402) 335-2022.
What is Gregory Mann, O.D.'s NPI number? ▼
Gregory Mann, O.D.'s National Provider Identifier (NPI) is 1790979672, issued on 09/04/2007.
Does Gregory Mann, O.D. prescribe more brand-name or generic drugs? ▼
Gregory Mann, O.D.'s prescribing is 49% brand-name and 51% generic drugs by claim count, with $2K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 60,484 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does Gregory Mann, O.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Gregory Mann, O.D.'s most frequently prescribed drugs include Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Mann, O.D. accept Medicare? ▼
Gregory Mann, O.D. appears in CMS Medicare data with 93 Part D claims and 19 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Mann, O.D.'s credentials? ▼
Gregory Mann, O.D.'s NPI is 1790979672 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
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.