NPI registry status
Active
2026 NPPES data Ophthalmology Physician NPI 1295797520 MD
Verify on CMS → Warren Reingold, MD
Ophthalmology Physician in North Hollywood, 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 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
1K
Medicare Part D claims · 292 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
60%
generic claims · 40% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · Above neutral
Industry payments
$346.35
7 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Warren Reingold, MD reported a CMS MIPS final score of 75/100 - below the 83.1 national average - and filed 1,363 Medicare Part D claims in 2023.
- 75/100
- MIPS score · -8 vs avg
- 1K
- Part D claims, 2023
- 60%
- 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.
Warren Reingold, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
75 15th percentile higher than 15% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Warren Reingold, MD sits
This provider among ophthalmology physician peers
Across the 9,866 ophthalmology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Warren Reingold, MD writes more Part D claims than 56% of them and scores higher on MIPS quality than 15% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one ophthalmology physician peer from a representative sample of 60; the gold marker is Warren Reingold, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Warren Reingold, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Warren Reingold, MD?
Below national averagePrimary specialty
Ophthalmology Physician
Medicare Part D claims
1,363 4% vs specialty avg
MIPS final score
75/100 8.1 pts vs avg
Specialty distribution in California
How Ophthalmology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Warren Reingold, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average
- MIPS Final Score
- 75/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Ophthalmology Physician) - 75/100 vs national avg 83.1
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).
Warren Reingold, MD appears in the CMS NPPES registry as an Ophthalmology Physician provider holding MD credentials at 12139 RIVERSIDE DR, North Hollywood, CA, 91607, with a listed phone of (818) 763-3937. NPI 1295797520 was issued on 04/03/2006.
Medicare Part D records for calendar year 2023 show 1,363 prescription claims written by this provider, covering 292 Medicare beneficiaries and totaling roughly $157K in drug spend, split 40% brand-name and 60% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.
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 | 1295797520 |
|---|---|
| Specialty | Ophthalmology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/03/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
75
Final Score
Avg: 83.1
Reporting: Group practice
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 Warren Reingold, MD. Source: openpaymentsdata.cms.gov.
Total received
$346
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 Warren Reingold, MD. To verify Warren Reingold, MD'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 · Above average
Warren Reingold, MD - brand share 40.0%
Ophthalmology Physician average
40% brand-name claims vs 60% generic, on 1,363 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.
1,363
Total Claims
$157K
Total Drug Cost
292
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,853
- Total Day Supply
- 48,853
- Brand vs Generic
- 40% brand / 60% generic
- Brand Drug Cost
- $131K
- Generic Drug Cost
- $27K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 74.7 years
- Avg HCC Risk Score
- 1.42
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 19, 65-74: 139, 75-84: 104, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Warren Reingold, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Latanoprost
Latanoprost
191 claims
- Prednisolone Acetate
Prednisolone Acetate
167 claims
- Timolol Maleate
Timolol Maleate
142 claims
- Ofloxacin
Ofloxacin
135 claims
- Ketorolac Trometha…
Ketorolac Tromethamine
127 claims
- Neomycin-Polymyxin…
Neomycin-Polymyxin-Dexameth
91 claims
- Restasis 64
Restasis
64 claims
- Alphagan P 53
Alphagan P
53 claims
| Drug | Claims |
|---|---|
| Latanoprost | 191 |
| Prednisolone Acetate | 167 |
| Timolol Maleate | 142 |
| Ofloxacin | 135 |
| Ketorolac Tromethamine | 127 |
| Neomycin-Polymyxin-Dexameth Neomycin/Polymyxin B/Dexametha | 91 |
| Restasis Cyclosporine | 64 |
| Alphagan P Brimonidine Tartrate | 53 |
| Erythromycin Erythromycin Base | 51 |
| Lumigan Bimatoprost | 46 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Ophthalmology Physician Overview
How Warren Reingold, MD 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
Warren Reingold, MD's 1,363 claims are below the specialty average of 1,420.
Nearby Ophthalmology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Reingold.
Dr. Sam Abbassi
MD, MS
West Hills, CA
Dr. Richard Abbott
M.D.
San Francisco, CA
Dr. Nizar Abdelfattah
MD
Pasadena, CA
Dr. Parastou Abedi
MD
Aliso Viejo, CA
Dr. Shahla Abedi
MD
Aliso Viejo, CA
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 California 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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Frequently Asked Questions
What is Warren Reingold, MD's specialty? ▼
Warren Reingold, MD specializes in Ophthalmology Physician and practices in North Hollywood, California. Credentials: MD.
How much does Warren Reingold, MD prescribe under Medicare Part D? ▼
In 2023, Warren Reingold, MD wrote 1,363 Medicare Part D claims totaling $157K in drug costs for 292 beneficiaries.
What is Warren Reingold, MD's Medicare quality score? ▼
Warren Reingold, MD has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Warren Reingold, MD located? ▼
Warren Reingold, MD is located at 12139 RIVERSIDE DR, North Hollywood, CA, 91607. Phone: (818) 763-3937.
What is Warren Reingold, MD's NPI number? ▼
Warren Reingold, MD's National Provider Identifier (NPI) is 1295797520, issued on 04/03/2006.
Does Warren Reingold, MD prescribe more brand-name or generic drugs? ▼
Warren Reingold, MD's prescribing is 40% brand-name and 60% generic drugs by claim count, with $131K 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 Warren Reingold, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Warren Reingold, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Warren Reingold, MD accept Medicare? ▼
Warren Reingold, MD appears in CMS Medicare data with 1,363 Part D claims and 292 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Warren Reingold, MD's credentials? ▼
Warren Reingold, MD's NPI is 1295797520 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.