2026 NPPES data Retina Specialist (Ophthalmology) Physician NPI 1255759981 M.D.
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REDA ISSA, M.D.

Retina Specialist (Ophthalmology) Physician in TEMECULA, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
304
Medicare Part D claims · 99 beneficiaries · Retina Specialist (Ophthalmology) Physician avg: 558
Generic prescribing
60%
generic claims · 40% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: REDA ISSA, M.D. is a Retina Specialist (Ophthalmology) Physician ([object Object]) practicing in TEMECULA, California with a Medicare Part D prescribing footprint of 304 claims across 99 beneficiaries — 40% brand-name prescribing .

What stands out: REDA ISSA, M.D. filed 304 Medicare Part D claims in 2023 across TEMECULA, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

REDA ISSA, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

REDA ISSA, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 03/31/2014

NPI 1255759981

Primary specialty

Retina Specialist (Ophthalmology) Physician

Niche

913 US NPIs in this specialty

Medicare Part D claims

304 46% vs specialty avg

2023 prescription claims

Specialty avg: 558

Specialty distribution in California

How Retina Specialist (Ophthalmology) Physician compares to other specialties among California providers

California providers

Retina Specialist (Ophthalmology) Physician share within California

1. Retina Specialist (Ophthalmology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Retina Specialist (Ophthalmology) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Retina Specialist (Ophthalmology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Retina Specialist (Ophthalmology) Physician ABMS/AOA estimate

Est. board-certified rate (Retina Specialist (Ophthalmology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Retina Specialist (Ophthalmology) Physician) — ABMS / AOA estimate

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).

REDA ISSA, M.D. is a Retina Specialist (Ophthalmology) Physician provider practicing in TEMECULA, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1255759981. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

REDA ISSA, M.D. appears in the CMS NPPES registry as a Retina Specialist (Ophthalmology) Physician provider holding M.D. credentials at 41900 WINCHESTER RD STE 201, TEMECULA, CA, 92590, with a listed phone of (951) 679-0400. NPI 1255759981 was issued on 03/31/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ISSA most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 304 prescription claims written by this provider, covering 99 Medicare beneficiaries and totaling roughly $12K in drug spend, split 40% brand-name and 60% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Retina Specialist (Ophthalmology) Physician is a narrow specialty nationwide, with 913 enrolled providers across 48 states and an average of 558 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

41900 WINCHESTER RD STE 201
TEMECULA, CA 92590

Provider Details

NPI 1255759981
Specialty Retina Specialist (Ophthalmology) Physician
Credentials M.D.
Gender Male
NPI Issued 03/31/2014

Hospital and facility affiliations

Facilities where REDA ISSA, 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.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
FONTANA, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 REDA ISSA, M.D.. To verify REDA ISSA, 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 · Above average

REDA ISSA, M.D. — brand share 40.0%
Specialty average (est.)

40% brand-name claims vs 60% generic, on 304 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.

304
Total Claims
$12K
Total Drug Cost
99
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
408
Total Day Supply
10,262
Brand vs Generic
40% brand / 60% generic
Brand Drug Cost
$8K
Generic Drug Cost
$4K

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
1.78
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Prednisolone Acetate
104
Ofloxacin
60
Ketorolac Tromethamine
24
Latanoprost
19
Brimonidine Tartrate
18
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
14

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Retina Specialist (Ophthalmology) Physician Overview

How REDA ISSA, M.D. fits within the Retina Specialist (Ophthalmology) Physician landscape nationally.

913
Retina Specialist (Ophthalmology) Physician Providers in US
48
States with Retina Specialist (Ophthalmology) Physician
558
Avg Claims per Provider

REDA ISSA, M.D.'s 304 claims are below the specialty average of 558.

Nearby Retina Specialist (Ophthalmology) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as ISSA.

Compare Retina Specialist (Ophthalmology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is REDA ISSA, M.D.'s specialty?
REDA ISSA, M.D. specializes in Retina Specialist (Ophthalmology) Physician and practices in TEMECULA, California. Credentials: M.D..
How much does REDA ISSA, M.D. prescribe under Medicare Part D?
In 2023, REDA ISSA, M.D. wrote 304 Medicare Part D claims totaling $12K in drug costs for 99 beneficiaries.
Where is REDA ISSA, M.D. located?
REDA ISSA, M.D. is located at 41900 WINCHESTER RD STE 201, TEMECULA, CA, 92590. Phone: (951) 679-0400.
What is REDA ISSA, M.D.'s NPI number?
REDA ISSA, M.D.'s National Provider Identifier (NPI) is 1255759981, issued on 03/31/2014.
Does REDA ISSA, M.D. prescribe more brand-name or generic drugs?
REDA ISSA, M.D.'s prescribing is 40% brand-name and 60% generic drugs by claim count, with $8K in brand drug costs.
How many Retina Specialist (Ophthalmology) Physician providers are there in the US?
There are 913 Retina Specialist (Ophthalmology) Physician providers across 48 states in the US. The average Retina Specialist (Ophthalmology) Physician provider writes 558 Medicare Part D claims per year.
What drugs does REDA ISSA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, REDA ISSA, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Ofloxacin, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does REDA ISSA, M.D. accept Medicare?
REDA ISSA, M.D. appears in CMS Medicare data with 304 Part D claims and 99 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REDA ISSA, M.D.'s credentials?
REDA ISSA, M.D.'s NPI is 1255759981 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

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