2026 NPPES data Gynecologic Oncology Physician NPI 1881665495 MD
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JAY SHAH, MD

Gynecologic Oncology Physician in IRVINE, 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
357
Medicare Part D claims · 99 beneficiaries · Gynecologic Oncology Physician avg: 188
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JAY SHAH, MD filed 357 Medicare Part D claims in 2023 as a Gynecologic Oncology Physician in IRVINE, California, prescribing 83% generic.

357
Part D claims, 2023
83%
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.

JAY SHAH, MD's Medicare Part D volume vs every U.S. prescriber

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

357 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)

JAY SHAH, MD 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 JAY SHAH, MD?

Quality data not reported

NPI registry status

Active

Issued 01/31/2006

NPI 1881665495

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

357 90% vs specialty avg

2023 prescription claims

Specialty avg: 188

Specialty distribution in California

How Gynecologic Oncology Physician compares to other specialties among California providers

California providers

Gynecologic Oncology Physician share within California

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

Specialty board-certification context

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

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

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

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

JAY SHAH, MD is a Gynecologic Oncology Physician provider practicing in IRVINE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1881665495. 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.

JAY SHAH, MD appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding MD credentials at 6650 ALTON PKWY # 2, IRVINE, CA, 92618, with a listed phone of (949) 932-5695. NPI 1881665495 was issued on 01/31/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SHAH 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 357 prescription claims written by this provider, covering 99 Medicare beneficiaries and totaling roughly $677K in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 7.8%. 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.

Gynecologic Oncology Physician is a narrow specialty nationwide, with 1,360 enrolled providers across 49 states and an average of 188 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

6650 ALTON PKWY # 2
IRVINE, CA 92618

Provider Details

NPI 1881665495
Specialty Gynecologic Oncology Physician
Credentials MD
Gender Male
NPI Issued 01/31/2006

Hospital and facility affiliations

Facilities where JAY SHAH, 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.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
RIVERSIDE, 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 JAY SHAH, MD. To verify JAY SHAH, 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 · Typical

JAY SHAH, MD — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 357 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.

357
Total Claims
$677K
Total Drug Cost
99
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
523
Total Day Supply
12,024
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$671K
Generic Drug Cost
$5K
Opioid Claims
28 (7.8% rate)
Antibiotic Claims
14

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.64
Gender Split
100% female / 0% 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
Letrozole
36
Ibuprofen
31
Dexamethasone
29
Lynparza
Olaparib
29
Estradiol
26
Ondansetron Hcl
26
Megestrol Acetate
18
Oxycodone Hcl
17
Entecavir
13
Tamoxifen Citrate
11

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

Gynecologic Oncology Physician Overview

How JAY SHAH, MD fits within the Gynecologic Oncology Physician landscape nationally.

1,360
Gynecologic Oncology Physician Providers in US
49
States with Gynecologic Oncology Physician
188
Avg Claims per Provider

JAY SHAH, MD's 357 claims are above the specialty average of 188.

Nearby Gynecologic Oncology Physician Providers in California

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

Compare Gynecologic Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JAY SHAH, MD's specialty?
JAY SHAH, MD specializes in Gynecologic Oncology Physician and practices in IRVINE, California. Credentials: MD.
How much does JAY SHAH, MD prescribe under Medicare Part D?
In 2023, JAY SHAH, MD wrote 357 Medicare Part D claims totaling $677K in drug costs for 99 beneficiaries.
Where is JAY SHAH, MD located?
JAY SHAH, MD is located at 6650 ALTON PKWY # 2, IRVINE, CA, 92618. Phone: (949) 932-5695.
What is JAY SHAH, MD's NPI number?
JAY SHAH, MD's National Provider Identifier (NPI) is 1881665495, issued on 01/31/2006.
Does JAY SHAH, MD prescribe more brand-name or generic drugs?
JAY SHAH, MD's prescribing is 17% brand-name and 83% generic drugs by claim count, with $671K in brand drug costs.
Does JAY SHAH, MD prescribe opioids?
Yes, JAY SHAH, MD had 28 opioid claims in 2023 with an opioid prescribing rate of 7.8%.
How many Gynecologic Oncology Physician providers are there in the US?
There are 1,360 Gynecologic Oncology Physician providers across 49 states in the US. The average Gynecologic Oncology Physician provider writes 188 Medicare Part D claims per year.
What drugs does JAY SHAH, MD prescribe most often?
Based on 2023 Medicare Part D data, JAY SHAH, MD's most frequently prescribed drugs include Letrozole, Ibuprofen, Dexamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAY SHAH, MD accept Medicare?
JAY SHAH, MD appears in CMS Medicare data with 357 Part D claims and 99 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAY SHAH, MD's credentials?
JAY SHAH, MD's NPI is 1881665495 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