2026 NPPES data Transplant Hepatology Physician NPI 1548281322 M.D.
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ROBERT GISH, M.D.

Transplant Hepatology Physician in FOLSOM, 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
373
Medicare Part D claims · 80 beneficiaries · Transplant Hepatology Physician avg: 536
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$415.1K
271 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ROBERT GISH, M.D. filed 373 Medicare Part D claims in 2023 as a Transplant Hepatology Physician in FOLSOM, California, prescribing 76% generic.

373
Part D claims, 2023
76%
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.

ROBERT GISH, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

373 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)

ROBERT GISH, M.D. 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).

What does the federal data show about ROBERT GISH, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/21/2006

NPI 1548281322

Primary specialty

Transplant Hepatology Physician

Rare

131 US NPIs in this specialty

Medicare Part D claims

373 30% vs specialty avg

2023 prescription claims

Specialty avg: 536

Specialty distribution in California

How Transplant Hepatology Physician compares to other specialties among California providers

California providers

Transplant Hepatology Physician share within California

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

Specialty board-certification context

Estimated specialty board-certified rate — Transplant Hepatology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Transplant Hepatology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Transplant Hepatology 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).

ROBERT GISH, M.D. appears in the CMS NPPES registry as a Transplant Hepatology Physician provider holding M.D. credentials at 1580 CREEKSIDE DR STE 220, FOLSOM, CA, 95630, with a listed phone of (916) 986-4444. NPI 1548281322 was issued on 07/21/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GISH 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 373 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $325K in drug spend, split 24% brand-name and 76% 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.

Transplant Hepatology Physician is a narrow specialty nationwide, with 131 enrolled providers across 36 states and an average of 536 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

1580 CREEKSIDE DR STE 220
FOLSOM, CA 95630

Provider Details

NPI 1548281322
Specialty Transplant Hepatology Physician
Credentials M.D.
Gender Male
NPI Issued 07/21/2006

Hospital and facility affiliations

Facilities where ROBERT GISH, 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.

GASTROENTEROLOGY MEDICAL CLINIC
FOLSOM, CA
PROVIDENCE MEDICAL FOUNDATION
SANTA ROSA, 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 ROBERT GISH, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$415.1K

Largest payer

Intercept Pharmaceuticals, 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 ROBERT GISH, M.D.. To verify ROBERT GISH, 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 · Typical

ROBERT GISH, M.D. — brand share 24.0%
Specialty average (est.)

24% brand-name claims vs 76% generic, on 373 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.

373
Total Claims
$325K
Total Drug Cost
80
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
659
Total Day Supply
19,587
Brand vs Generic
24% brand / 76% generic
Brand Drug Cost
$281K
Generic Drug Cost
$44K

Patient Demographics

Average Patient Age
72.0 years
Avg HCC Risk Score
1.72
Gender Split
53% female / 48% male

Top Prescribed Drugs (Medicare Part D)

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

What ROBERT GISH, M.D. 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
Ursodiol
81
Atorvastatin Calcium
72
Vemlidy
Tenofovir Alafenamide
47
Mycophenolate Mofetil
40
Furosemide
14
Entecavir
13
Tacrolimus
13
Eliquis
Apixaban
11

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

Transplant Hepatology Physician Overview

How ROBERT GISH, M.D. fits within the Transplant Hepatology Physician landscape nationally.

131
Transplant Hepatology Physician Providers in US
36
States with Transplant Hepatology Physician
536
Avg Claims per Provider

ROBERT GISH, M.D.'s 373 claims are below the specialty average of 536.

Nearby Transplant Hepatology Physician Providers in California

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

Compare Transplant Hepatology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT GISH, M.D.'s specialty?
ROBERT GISH, M.D. specializes in Transplant Hepatology Physician and practices in FOLSOM, California. Credentials: M.D..
How much does ROBERT GISH, M.D. prescribe under Medicare Part D?
In 2023, ROBERT GISH, M.D. wrote 373 Medicare Part D claims totaling $325K in drug costs for 80 beneficiaries.
Where is ROBERT GISH, M.D. located?
ROBERT GISH, M.D. is located at 1580 CREEKSIDE DR STE 220, FOLSOM, CA, 95630. Phone: (916) 986-4444.
What is ROBERT GISH, M.D.'s NPI number?
ROBERT GISH, M.D.'s National Provider Identifier (NPI) is 1548281322, issued on 07/21/2006.
Does ROBERT GISH, M.D. prescribe more brand-name or generic drugs?
ROBERT GISH, M.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $281K in brand drug costs.
How many Transplant Hepatology Physician providers are there in the US?
There are 131 Transplant Hepatology Physician providers across 36 states in the US. The average Transplant Hepatology Physician provider writes 536 Medicare Part D claims per year.
What drugs does ROBERT GISH, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ROBERT GISH, M.D.'s most frequently prescribed drugs include Ursodiol, Atorvastatin Calcium, Vemlidy. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ROBERT GISH, M.D. accept Medicare?
ROBERT GISH, M.D. appears in CMS Medicare data with 373 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT GISH, M.D.'s credentials?
ROBERT GISH, M.D.'s NPI is 1548281322 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