2026 NPPES data Gynecologic Oncology Physician NPI 1508989468 M.D.
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WILEY FOWLER, M.D.

Gynecologic Oncology 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
150
Medicare Part D claims · 56 beneficiaries · Gynecologic Oncology Physician avg: 188
MIPS score
96.5085/100
▲ 13 pts above national avg 83.1 · [object Object]
Industry payments
$33.63
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: WILEY FOWLER, M.D. is a Gynecologic Oncology Physician ([object Object]) practicing in SACRAMENTO, California with a Medicare Part D prescribing footprint of 150 claims across 56 beneficiaries . Their CMS MIPS Final Score of 96.5085/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $33.63 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: WILEY FOWLER, M.D. reported a CMS MIPS final score of 96.5085 out of 100, above the 83.1 national average, and filed 150 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

WILEY FOWLER, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

WILEY FOWLER, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 04/07/2007

NPI 1508989468

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

150 20% vs specialty avg

2023 prescription claims

Specialty avg: 188

MIPS final score

96.5085/100 13.408500000000004% pts

Exceptional band

vs 83.1 national avg

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

Medicare quality performance — MIPS

WILEY FOWLER, M.D.'s 2023 MIPS final score plotted against the Gynecologic Oncology Physician national average

High performer (top quartile)
MIPS Final Score
96.5085/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Gynecologic Oncology Physician) — 96.5085/100 vs national avg 83.1

0%100%National avg83%96.5%
MIPS final score (Gynecologic Oncology Physician) — 96.5085/100 vs national avg 83.1

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).

WILEY FOWLER, M.D. is a Gynecologic Oncology Physician provider practicing in SACRAMENTO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1508989468. 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.

WILEY FOWLER, M.D. appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding M.D. credentials at 3000 Q STREET, SACRAMENTO, CA, 95816, with a listed phone of (916) 733-3333. NPI 1508989468 was issued on 04/07/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FOWLER 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 150 prescription claims written by this provider, covering 56 Medicare beneficiaries and totaling roughly $5K in drug spend, with an opioid prescribing rate of 26.7%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.5085/100 for the 2023 performance year (Quality 80.342), compared with the national average of 83.1.

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

3000 Q STREET
SACRAMENTO, CA 95816

Provider Details

NPI 1508989468
Specialty Gynecologic Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 04/07/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

96.5085
Final Score
Avg: 83.1
80.342
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where WILEY FOWLER, 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.

DIGNITY HEALTH MEDICAL FOUNDATION
SACRAMENTO, 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 WILEY FOWLER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$34

Largest payer

AstraZeneca Pharmaceuticals LP

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 WILEY FOWLER, M.D.. To verify WILEY FOWLER, 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.

Medicare Part D Prescribing Data

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

150
Total Claims
$5K
Total Drug Cost
56
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
150
Total Day Supply
2,202
Generic Drug Cost
$5K
Opioid Claims
40 (26.7% rate)
Antibiotic Claims
18

Patient Demographics

Average Patient Age
72.5 years
Avg HCC Risk Score
1.36

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
27
Anastrozole
23
Ibuprofen
15
Ondansetron Odt
Ondansetron
15
Enoxaparin Sodium
14

* 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 WILEY FOWLER, M.D. 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

WILEY FOWLER, M.D.'s 150 claims are below 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 FOWLER.

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

Frequently Asked Questions

What is WILEY FOWLER, M.D.'s specialty?
WILEY FOWLER, M.D. specializes in Gynecologic Oncology Physician and practices in SACRAMENTO, California. Credentials: M.D..
How much does WILEY FOWLER, M.D. prescribe under Medicare Part D?
In 2023, WILEY FOWLER, M.D. wrote 150 Medicare Part D claims totaling $5K in drug costs for 56 beneficiaries.
What is WILEY FOWLER, M.D.'s Medicare quality score?
WILEY FOWLER, M.D. has a CMS MIPS Final Score of 96.5085/100 (Quality: 80.342). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is WILEY FOWLER, M.D. located?
WILEY FOWLER, M.D. is located at 3000 Q STREET, SACRAMENTO, CA, 95816. Phone: (916) 733-3333.
What is WILEY FOWLER, M.D.'s NPI number?
WILEY FOWLER, M.D.'s National Provider Identifier (NPI) is 1508989468, issued on 04/07/2007.
Does WILEY FOWLER, M.D. prescribe opioids?
Yes, WILEY FOWLER, M.D. had 40 opioid claims in 2023 with an opioid prescribing rate of 26.7%.
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 WILEY FOWLER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, WILEY FOWLER, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Anastrozole, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WILEY FOWLER, M.D. accept Medicare?
WILEY FOWLER, M.D. appears in CMS Medicare data with 150 Part D claims and 56 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WILEY FOWLER, M.D.'s credentials?
WILEY FOWLER, M.D.'s NPI is 1508989468 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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