NPI registry status
Active
2026 NPPES data Cornea and External Diseases Specialist Physician NPI 1316984255 M.D.
Verify on CMS → Peter Andrews, M.D.
Cornea and External Diseases Specialist Physician in Sacramento, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 294 in Cornea and External Diseases Specialist 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
2K
Medicare Part D claims · 357 beneficiaries · Cornea and External Diseases Specialist Physician avg: 1K
Generic prescribing
49%
generic claims · 51% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.5K
35 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
Peter Andrews, M.D. filed 1,688 Medicare Part D claims in 2023 as a Cornea and External Diseases Specialist Physician in Sacramento, California, prescribing 49% generic.
- 2K
- Part D claims, 2023
- 49%
- 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.
Peter Andrews, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,688 Top 18% higher than 82% 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 certification likely (heuristic, not verified)
Peter Andrews, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Peter Andrews, M.D.?
Quality data not reportedPrimary specialty
Cornea and External Diseases Specialist Physician
Medicare Part D claims
1,688 37% vs specialty avg
Specialty distribution in California
How Cornea and External Diseases Specialist Physician compares to other specialties among California 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 Cornea and External Diseases Specialist 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).
Peter Andrews, M.D. appears in the CMS NPPES registry as a Cornea and External Diseases Specialist Physician provider holding M.D. credentials at 1220 25TH ST, Sacramento, CA, 95816, with a listed phone of (916) 306-8123. NPI 1316984255 was issued on 05/31/2006.
Medicare Part D records for calendar year 2023 show 1,688 prescription claims written by this provider, covering 357 Medicare beneficiaries and totaling roughly $342K in drug spend, split 51% brand-name and 49% generic by claim count.
Cornea and External Diseases Specialist Physician is a narrow specialty nationwide, with 294 enrolled providers across 43 states and an average of 1,232 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 | 1316984255 |
|---|---|
| Specialty | Cornea and External Diseases Specialist Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/31/2006 |
Hospital and facility affiliations
Facilities where Peter Andrews, 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.
Donald J Keller MD PC
Erie, CO
Eye Center OF Northern Colorado PC
Fort Collins, CO
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 Peter Andrews, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.5K
Largest payer
Glaukos Corporation
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 - California MBC 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 ~150K California medical licensees in 2023 - they are NOT specific to Peter Andrews, M.D.. To verify Peter Andrews, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC 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 California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Brand-heavy
Peter Andrews, M.D. - brand share 51.0%
Cornea and External Diseases Specialist Physician average
51% brand-name claims vs 49% generic, on 1,688 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.
1,688
Total Claims
$342K
Total Drug Cost
357
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,566
- Total Day Supply
- 71,131
- Brand vs Generic
- 51% brand / 49% generic
- Brand Drug Cost
- $303K
- Generic Drug Cost
- $39K
Patient Demographics
- Average Patient Age
- 76.8 years
- Avg HCC Risk Score
- 1.34
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 17, 65-74: 137, 75-84: 139, 85+: 64
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Peter Andrews, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
462 claims
- Timolol Maleate
Timolol Maleate
193 claims
- Prednisolone Acetate 146
Prednisolone Acetate
146 claims
- Ketorolac Trometha… 112
Ketorolac Tromethamine
112 claims
- Moxifloxacin 103
Moxifloxacin
103 claims
- Restasis 100
Restasis
100 claims
- Lumigan 67
Lumigan
67 claims
- Xiidra 60
Xiidra
60 claims
| Drug | Claims |
|---|---|
| Latanoprost | 462 |
| Timolol Maleate | 193 |
| Prednisolone Acetate | 146 |
| Ketorolac Tromethamine | 112 |
| Moxifloxacin Moxifloxacin Hcl | 103 |
| Restasis Cyclosporine | 100 |
| Lumigan Bimatoprost | 67 |
| Xiidra Lifitegrast | 60 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 59 |
| Brimonidine Tartrate-Timolol Brimonidine Tartrate/Timolol | 48 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Cornea and External Diseases Specialist Physician in CA →
All providers in California →
Compare specialties →
Cornea and External Diseases Specialist Physician Overview
How Peter Andrews, M.D. fits within the Cornea and External Diseases Specialist Physician landscape nationally.
294
Cornea and External Diseases Specialist Physician Providers in US
43
States with Cornea and External Diseases Specialist Physician
1,232
Avg Claims per Provider
Peter Andrews, M.D.'s 1,688 claims are above the specialty average of 1,232.
Nearby Cornea and External Diseases Specialist Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Andrews.
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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Cornea and External Diseases Specialist 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.
Healthcare Guides
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Medical Specialties Explained
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Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
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Frequently Asked Questions
What is Peter Andrews, M.D.'s specialty? ▼
Peter Andrews, M.D. specializes in Cornea and External Diseases Specialist Physician and practices in Sacramento, California. Credentials: M.D..
How much does Peter Andrews, M.D. prescribe under Medicare Part D? ▼
In 2023, Peter Andrews, M.D. wrote 1,688 Medicare Part D claims totaling $342K in drug costs for 357 beneficiaries.
Where is Peter Andrews, M.D. located? ▼
Peter Andrews, M.D. is located at 1220 25TH ST, Sacramento, CA, 95816. Phone: (916) 306-8123.
What is Peter Andrews, M.D.'s NPI number? ▼
Peter Andrews, M.D.'s National Provider Identifier (NPI) is 1316984255, issued on 05/31/2006.
Does Peter Andrews, M.D. prescribe more brand-name or generic drugs? ▼
Peter Andrews, M.D.'s prescribing is 51% brand-name and 49% generic drugs by claim count, with $303K in brand drug costs.
How many Cornea and External Diseases Specialist Physician providers are there in the US? ▼
There are 294 Cornea and External Diseases Specialist Physician providers across 43 states in the US. The average Cornea and External Diseases Specialist Physician provider writes 1,232 Medicare Part D claims per year.
What drugs does Peter Andrews, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Peter Andrews, M.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Prednisolone Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Peter Andrews, M.D. accept Medicare? ▼
Peter Andrews, M.D. appears in CMS Medicare data with 1,688 Part D claims and 357 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Peter Andrews, M.D.'s credentials? ▼
Peter Andrews, M.D.'s NPI is 1316984255 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.