NPI registry status
Active
2026 NPPES data Optometrist NPI 1578874236 O.D.
Verify on CMS → Billy Mendoza, O.D.
Optometrist in Reno, Nevada.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 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
48
Medicare Part D claims · 38 beneficiaries · Optometrist avg: 279
Generic prescribing
27%
generic claims · 73% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Billy Mendoza, O.D. filed 48 Medicare Part D claims in 2024 as an Optometrist in Reno, Nevada, prescribing 27% generic.
- 48
- Part D claims, 2024
- 27%
- generic prescribing
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Billy Mendoza, O.D.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1578874236), first enumerated 06/28/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 48 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1578874236 · Optometrist
NPI-10 · ENUM-MID · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1578874236
- ENUM-MID 2010
- TAX-MEGA 61K Optometrist
- RX-TRACE 48
- BOOK-LIGHT 534 in Nevada
- PHOTO-ENUM Kristen Desautel, O.D. · 2010
Billy Mendoza, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
48 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Billy Mendoza, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
48 83% vs specialty avg
Specialty distribution in Nevada
How Optometrist compares to other specialties among Nevada 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).
Practice Address
Provider Details
| NPI | 1578874236 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 06/28/2010 |
Brand vs generic prescribing mix · Brand-heavy
Billy Mendoza, O.D. - brand share 73.0%
Optometrist average
73% brand-name claims vs 27% generic, on 48 2024 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 2024.
48
Total Claims
$2K
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 53.033
- Total Day Supply
- 1,042
- Brand vs Generic
- 73% brand / 27% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $290
Patient Demographics
- Average Patient Age
- 73.1 years
- Avg HCC Risk Score
- 1.08
- Gender Split
- 63% female / 37% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Prednisolone Acetate | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Billy Mendoza, O.D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Billy Mendoza, O.D.'s 48 claims are below the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Mendoza, both outside Nevada so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in Nevada
Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as Mendoza.
One of 534 Optometrist providers enrolled in Nevada, 5 are shown here.
Gary Abel
Carson City, NV
Dr. Amy Abraham
O.D.
Henderson, NV
Dr. Cheryl Adlington
O.D.
Reno, NV
Dr. Patrick Adlington
OD, FAAO
Reno, NV
Dr. Nadia Afkhami
OD, MS
Henderson, NV
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Billy Mendoza, O.D.'s specialty? ▼
Billy Mendoza, O.D. specializes in Optometrist and practices in Reno, Nevada. Credentials: O.D..
How much does Billy Mendoza, O.D. prescribe under Medicare Part D? ▼
In 2024, Billy Mendoza, O.D. wrote 48 Medicare Part D claims totaling $2K in drug costs for 38 beneficiaries.
Where is Billy Mendoza, O.D. located? ▼
Billy Mendoza, O.D. is located at 501 KEYSTONE AVE, Reno, NV, 89503. Phone: (775) 322-3777.
What is Billy Mendoza, O.D.'s NPI number? ▼
Billy Mendoza, O.D.'s National Provider Identifier (NPI) is 1578874236, issued on 06/28/2010.
Does Billy Mendoza, O.D. prescribe more brand-name or generic drugs? ▼
Billy Mendoza, O.D.'s prescribing is 73% brand-name and 27% generic drugs by claim count, with $2K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Billy Mendoza, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Billy Mendoza, O.D.'s most frequently prescribed drugs include Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Billy Mendoza, O.D. accept Medicare? ▼
Billy Mendoza, O.D. appears in CMS Medicare data with 48 Part D claims and 38 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Billy Mendoza, O.D.'s credentials? ▼
Billy Mendoza, O.D.'s NPI is 1578874236 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.