2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1154598423 D.O.
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SUZANNE CHUN, D.O.

Physical Medicine & Rehabilitation Physician in MARTINEZ, 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
340
Medicare Part D claims · 105 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781

What the federal data shows

SUZANNE CHUN, D.O. filed 340 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in MARTINEZ, California.

340
Part D claims, 2023
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.

SUZANNE CHUN, D.O.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

340 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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)

SUZANNE CHUN, D.O. 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).

What does the federal data show about SUZANNE CHUN, D.O.?

Quality data not reported

NPI registry status

Active

Issued 05/14/2008

NPI 1154598423

Primary specialty

Physical Medicine & Rehabilitation Physician

Mid-sized

15,306 US NPIs in this specialty

Medicare Part D claims

340 56% vs specialty avg

2023 prescription claims

Specialty avg: 781

Specialty distribution in California

How Physical Medicine & Rehabilitation Physician compares to other specialties among California providers

California providers

Physical Medicine & Rehabilitation Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Physical Medicine & Rehabilitation Physician (ABMS / AOA reference)

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

Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physical Medicine & Rehabilitation 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).

SUZANNE CHUN, D.O. appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding D.O. credentials at 200 MUIR RD, MARTINEZ, CA, 94553, with a listed phone of (925) 313-4740. NPI 1154598423 was issued on 05/14/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHUN 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 340 prescription claims written by this provider, covering 105 Medicare beneficiaries and totaling roughly $10K in drug spend. 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.

Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,306 enrolled providers across 54 states and an average of 781 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

200 MUIR RD
MARTINEZ, CA 94553

Provider Details

NPI 1154598423
Specialty Physical Medicine & Rehabilitation Physician
Credentials D.O.
Gender Female
NPI Issued 05/14/2008

Hospital and facility affiliations

Facilities where SUZANNE CHUN, D.O. 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.

PERMANENTE MEDICAL GROUP INC
MARTINEZ, 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 SUZANNE CHUN, D.O.. To verify SUZANNE CHUN, D.O.'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

340
Total Claims
$10K
Total Drug Cost
105
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
690
Total Day Supply
19,868
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
1.42
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

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

What SUZANNE CHUN, D.O. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Baclofen
96
Gabapentin
71
Duloxetine Hcl
65
Tizanidine Hcl
49
Topiramate
24

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

Physical Medicine & Rehabilitation Physician Overview

How SUZANNE CHUN, D.O. fits within the Physical Medicine & Rehabilitation Physician landscape nationally.

15,306
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider

SUZANNE CHUN, D.O.'s 340 claims are below the specialty average of 781.

Nearby Physical Medicine & Rehabilitation Physician Providers in California

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

Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SUZANNE CHUN, D.O.'s specialty?
SUZANNE CHUN, D.O. specializes in Physical Medicine & Rehabilitation Physician and practices in MARTINEZ, California. Credentials: D.O..
How much does SUZANNE CHUN, D.O. prescribe under Medicare Part D?
In 2023, SUZANNE CHUN, D.O. wrote 340 Medicare Part D claims totaling $10K in drug costs for 105 beneficiaries.
Where is SUZANNE CHUN, D.O. located?
SUZANNE CHUN, D.O. is located at 200 MUIR RD, MARTINEZ, CA, 94553. Phone: (925) 313-4740.
What is SUZANNE CHUN, D.O.'s NPI number?
SUZANNE CHUN, D.O.'s National Provider Identifier (NPI) is 1154598423, issued on 05/14/2008.
How many Physical Medicine & Rehabilitation Physician providers are there in the US?
There are 15,306 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does SUZANNE CHUN, D.O. prescribe most often?
Based on 2023 Medicare Part D data, SUZANNE CHUN, D.O.'s most frequently prescribed drugs include Baclofen, Gabapentin, Duloxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SUZANNE CHUN, D.O. accept Medicare?
SUZANNE CHUN, D.O. appears in CMS Medicare data with 340 Part D claims and 105 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SUZANNE CHUN, D.O.'s credentials?
SUZANNE CHUN, D.O.'s NPI is 1154598423 with credentials D.O.. 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