2026 NPPES data Clinical Genetics (M.D.) Physician NPI 1912040213 MD
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GERALD EPSTEIN, MD

Clinical Genetics (M.D.) Physician in SACRAMENTO, 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
26
Medicare Part D claims · Clinical Genetics (M.D.) Physician avg: 261
What the federal data reveals: GERALD EPSTEIN, MD is a Clinical Genetics (M.D.) Physician ([object Object]) practicing in SACRAMENTO, California with a Medicare Part D prescribing footprint of 26 claims .

What stands out: GERALD EPSTEIN, MD filed 26 Medicare Part D claims in 2023 across SACRAMENTO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

GERALD EPSTEIN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

GERALD EPSTEIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/15/2007

NPI 1912040213

Primary specialty

Clinical Genetics (M.D.) Physician

Niche

825 US NPIs in this specialty

Medicare Part D claims

26 90% vs specialty avg

2023 prescription claims

Specialty avg: 261

Specialty distribution in California

How Clinical Genetics (M.D.) Physician compares to other specialties among California providers

California providers

Clinical Genetics (M.D.) Physician share within California

1. Clinical Genetics (M.D.) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Genetics (M.D.) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Genetics (M.D.) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Genetics (M.D.) Physician ABMS/AOA estimate

Est. board-certified rate (Clinical Genetics (M.D.) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Genetics (M.D.) 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).

GERALD EPSTEIN, MD is a Clinical Genetics (M.D.) Physician provider practicing in SACRAMENTO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1912040213. 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.

GERALD EPSTEIN, MD appears in the CMS NPPES registry as a Clinical Genetics (M.D.) Physician provider holding MD credentials at 3939 J STREET, SACRAMENTO, CA, 95816, with a listed phone of (916) 454-3668. NPI 1912040213 was issued on 02/15/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EPSTEIN 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 26 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $8K 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.

Clinical Genetics (M.D.) Physician is a narrow specialty nationwide, with 825 enrolled providers across 50 states and an average of 261 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

3939 J STREET
SACRAMENTO, CA 95816

Provider Details

NPI 1912040213
Specialty Clinical Genetics (M.D.) Physician
Credentials MD
Gender Male
NPI Issued 02/15/2007

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 GERALD EPSTEIN, MD. To verify GERALD EPSTEIN, 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.

Medicare Part D Prescribing Data

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

26
Total Claims
$8K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
56
Total Day Supply
1,637
Generic Drug Cost
$892

Patient Demographics

Average Patient Age
88.5 years
Avg HCC Risk Score
1.02

Clinical Genetics (M.D.) Physician Overview

How GERALD EPSTEIN, MD fits within the Clinical Genetics (M.D.) Physician landscape nationally.

825
Clinical Genetics (M.D.) Physician Providers in US
50
States with Clinical Genetics (M.D.) Physician
261
Avg Claims per Provider

GERALD EPSTEIN, MD's 26 claims are below the specialty average of 261.

Nearby Clinical Genetics (M.D.) Physician Providers in California

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

Compare Clinical Genetics (M.D.) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GERALD EPSTEIN, MD's specialty?
GERALD EPSTEIN, MD specializes in Clinical Genetics (M.D.) Physician and practices in SACRAMENTO, California. Credentials: MD.
How much does GERALD EPSTEIN, MD prescribe under Medicare Part D?
In 2023, GERALD EPSTEIN, MD wrote 26 Medicare Part D claims totaling $8K in drug costs for N/A beneficiaries.
Where is GERALD EPSTEIN, MD located?
GERALD EPSTEIN, MD is located at 3939 J STREET, SACRAMENTO, CA, 95816. Phone: (916) 454-3668.
What is GERALD EPSTEIN, MD's NPI number?
GERALD EPSTEIN, MD's National Provider Identifier (NPI) is 1912040213, issued on 02/15/2007.
How many Clinical Genetics (M.D.) Physician providers are there in the US?
There are 825 Clinical Genetics (M.D.) Physician providers across 50 states in the US. The average Clinical Genetics (M.D.) Physician provider writes 261 Medicare Part D claims per year.
Does GERALD EPSTEIN, MD accept Medicare?
GERALD EPSTEIN, MD appears in CMS Medicare data with 26 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GERALD EPSTEIN, MD's credentials?
GERALD EPSTEIN, MD's NPI is 1912040213 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