2026 NPPES data Gastroenterology Physician NPI 1437114113 M.D.
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JOHN ABDULIAN, M.D.

Gastroenterology Physician in FRESNO, 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
2K
Medicare Part D claims · 456 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.1K
150 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOHN ABDULIAN, M.D. is a Gastroenterology Physician ([object Object]) practicing in FRESNO, California with a Medicare Part D prescribing footprint of 2K claims across 456 beneficiaries — 9% brand-name prescribing . Industry payments of $3.1K across 150 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOHN ABDULIAN, M.D. filed 1,722 Medicare Part D claims in 2023 across FRESNO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOHN ABDULIAN, 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).

JOHN ABDULIAN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 04/18/2006

NPI 1437114113

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

1,722 107% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in California

How Gastroenterology Physician compares to other specialties among California providers

California providers

Gastroenterology Physician share within California

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

Specialty board-certification context

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

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

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

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

JOHN ABDULIAN, M.D. is a Gastroenterology Physician provider practicing in FRESNO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1437114113. 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.

JOHN ABDULIAN, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 7095 N CHESTNUT AVE STE 101, FRESNO, CA, 93720, with a listed phone of (559) 323-8200. NPI 1437114113 was issued on 04/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ABDULIAN 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 1,722 prescription claims written by this provider, covering 456 Medicare beneficiaries and totaling roughly $639K in drug spend, split 9% brand-name and 91% 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.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

7095 N CHESTNUT AVE STE 101
FRESNO, CA 93720

Provider Details

NPI 1437114113
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 04/18/2006

Hospital and facility affiliations

Facilities where JOHN ABDULIAN, 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.

COMMUNITY FOUNDATION MEDICAL GROUP
FRESNO, 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 JOHN ABDULIAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$3.1K

Largest payer

ABBVIE INC.

Most common payment type

Food and Beverage

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 JOHN ABDULIAN, M.D.. To verify JOHN ABDULIAN, 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 · Generic-heavy

JOHN ABDULIAN, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 1,722 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.

1,722
Total Claims
$639K
Total Drug Cost
456
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,038
Total Day Supply
115,753
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$546K
Generic Drug Cost
$93K
Antibiotic Claims
66

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.40
Gender Split
60% female / 40% male
Age Distribution
<65: 41, 65-74: 203, 75-84: 169, 85+: 43

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pantoprazole Sodium
583
Famotidine
229
Omeprazole
131
Baclofen
96
Dicyclomine Hcl
77
Amitriptyline Hcl
43
Azathioprine
39
Ondansetron Hcl
31
Metronidazole
30
Mesalamine
28

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

Gastroenterology Physician Overview

How JOHN ABDULIAN, M.D. fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

JOHN ABDULIAN, M.D.'s 1,722 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in California

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

Compare Gastroenterology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN ABDULIAN, M.D.'s specialty?
JOHN ABDULIAN, M.D. specializes in Gastroenterology Physician and practices in FRESNO, California. Credentials: M.D..
How much does JOHN ABDULIAN, M.D. prescribe under Medicare Part D?
In 2023, JOHN ABDULIAN, M.D. wrote 1,722 Medicare Part D claims totaling $639K in drug costs for 456 beneficiaries.
Where is JOHN ABDULIAN, M.D. located?
JOHN ABDULIAN, M.D. is located at 7095 N CHESTNUT AVE STE 101, FRESNO, CA, 93720. Phone: (559) 323-8200.
What is JOHN ABDULIAN, M.D.'s NPI number?
JOHN ABDULIAN, M.D.'s National Provider Identifier (NPI) is 1437114113, issued on 04/18/2006.
Does JOHN ABDULIAN, M.D. prescribe more brand-name or generic drugs?
JOHN ABDULIAN, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $546K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does JOHN ABDULIAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHN ABDULIAN, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Famotidine, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN ABDULIAN, M.D. accept Medicare?
JOHN ABDULIAN, M.D. appears in CMS Medicare data with 1,722 Part D claims and 456 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN ABDULIAN, M.D.'s credentials?
JOHN ABDULIAN, M.D.'s NPI is 1437114113 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