2026 NPPES data Internal Medicine Physician NPI 1558594309 MD
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YAZEN BEDDAWI, MD

Internal Medicine Physician in BERKELEY, 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
223
Medicare Part D claims · 73 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
26%
generic claims · 74% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$879.56
10 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: YAZEN BEDDAWI, MD is a Internal Medicine Physician ([object Object]) practicing in BERKELEY, California with a Medicare Part D prescribing footprint of 223 claims across 73 beneficiaries — 74% brand-name prescribing . Industry payments of $879.56 across 10 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: YAZEN BEDDAWI, MD filed 223 Medicare Part D claims in 2023 across BERKELEY, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

YAZEN BEDDAWI, MD 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).

YAZEN BEDDAWI, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/27/2009

NPI 1558594309

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

223 92% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in California

How Internal Medicine Physician compares to other specialties among California providers

California providers

Internal Medicine Physician share within California

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Internal Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Internal Medicine 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).

YAZEN BEDDAWI, MD is a Internal Medicine Physician provider practicing in BERKELEY, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1558594309. 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.

YAZEN BEDDAWI, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 2450 ASHBY AVE, BERKELEY, CA, 94705, with a listed phone of (510) 204-4444. NPI 1558594309 was issued on 08/27/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BEDDAWI 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 223 prescription claims written by this provider, covering 73 Medicare beneficiaries and totaling roughly $61K in drug spend, split 74% brand-name and 26% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

2450 ASHBY AVE
BERKELEY, CA 94705

Provider Details

NPI 1558594309
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 08/27/2009

Hospital and facility affiliations

Facilities where YAZEN BEDDAWI, MD 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.

HILL HEALTH INC A MEDICAL CORPORATION
OAKLAND, CA
INPATIENT SPECIALISTS OF CALIFORNIA PC
CASTRO VALLEY, 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).

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 YAZEN BEDDAWI, MD. Source: openpaymentsdata.cms.gov.

Total received

$880

Largest payer

Medtronic, Inc.

Most common payment type

Travel and Lodging

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 YAZEN BEDDAWI, MD. To verify YAZEN BEDDAWI, 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 · Brand-heavy

YAZEN BEDDAWI, MD — brand share 74.0%
Specialty average (est.)

74% brand-name claims vs 26% generic, on 223 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.

223
Total Claims
$61K
Total Drug Cost
73
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
257
Total Day Supply
7,082
Brand vs Generic
74% brand / 26% generic
Brand Drug Cost
$58K
Generic Drug Cost
$3K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.96
Gender Split
53% female / 47% 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
Breo Ellipta
Fluticasone/Vilanterol
52
Albuterol Sulfate Hfa
Albuterol Sulfate
49
Symbicort
Budesonide/Formoterol Fumarate
24
Ventolin Hfa
Albuterol Sulfate
12

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

Internal Medicine Physician Overview

How YAZEN BEDDAWI, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

YAZEN BEDDAWI, MD's 223 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in California

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is YAZEN BEDDAWI, MD's specialty?
YAZEN BEDDAWI, MD specializes in Internal Medicine Physician and practices in BERKELEY, California. Credentials: MD.
How much does YAZEN BEDDAWI, MD prescribe under Medicare Part D?
In 2023, YAZEN BEDDAWI, MD wrote 223 Medicare Part D claims totaling $61K in drug costs for 73 beneficiaries.
Where is YAZEN BEDDAWI, MD located?
YAZEN BEDDAWI, MD is located at 2450 ASHBY AVE, BERKELEY, CA, 94705. Phone: (510) 204-4444.
What is YAZEN BEDDAWI, MD's NPI number?
YAZEN BEDDAWI, MD's National Provider Identifier (NPI) is 1558594309, issued on 08/27/2009.
Does YAZEN BEDDAWI, MD prescribe more brand-name or generic drugs?
YAZEN BEDDAWI, MD's prescribing is 74% brand-name and 26% generic drugs by claim count, with $58K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does YAZEN BEDDAWI, MD prescribe most often?
Based on 2023 Medicare Part D data, YAZEN BEDDAWI, MD's most frequently prescribed drugs include Breo Ellipta, Albuterol Sulfate Hfa, Symbicort. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does YAZEN BEDDAWI, MD accept Medicare?
YAZEN BEDDAWI, MD appears in CMS Medicare data with 223 Part D claims and 73 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify YAZEN BEDDAWI, MD's credentials?
YAZEN BEDDAWI, MD's NPI is 1558594309 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

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