2026 NPPES data Women's Health Nurse Practitioner NPI 1386186153 WHNP
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Gail Dewyn, WHNP

Women's Health Nurse Practitioner in Torrance, 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
22
Medicare Part D claims · Women's Health Nurse Practitioner avg: 262

What the federal data shows

Gail Dewyn, WHNP filed 22 Medicare Part D claims in 2023 as a Women's Health Nurse Practitioner in Torrance, California.

22
Part D claims, 2023

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.

Gail Dewyn, WHNP's Medicare Part D volume vs every U.S. prescriber

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

22 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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

What does the federal data show about Gail Dewyn, WHNP?

Quality data not reported

NPI registry status

Active

Issued 11/10/2016

NPI 1386186153

Primary specialty

Women's Health Nurse Practitioner

Mid-sized

9,452 US NPIs in this specialty

Medicare Part D claims

22 92% vs specialty avg

2023 prescription claims

Specialty avg: 262

Specialty distribution in California

How Women's Health Nurse Practitioner compares to other specialties among California providers

California providers

Women's Health Nurse Practitioner share within California

1. Women's Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Women's Health Nurse Practitioner share within California

Specialty board-certification context

Estimated specialty board-certified rate — Women's Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Women's Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Women's Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Women's Health Nurse Practitioner) — 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).

Gail Dewyn, WHNP appears in the CMS NPPES registry as a Women's Health Nurse Practitioner provider holding WHNP credentials at 4201 TORRANCE BLVD STE 600, Torrance, CA, 90503, with a listed phone of (310) 316-4373. NPI 1386186153 was issued on 11/10/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Dewyn 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 22 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $212 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.

Women's Health Nurse Practitioner is a mid-sized specialty nationwide, with 9,452 enrolled providers across 55 states and an average of 262 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

4201 TORRANCE BLVD STE 600
Torrance, CA 90503

Provider Details

NPI 1386186153
Specialty Women's Health Nurse Practitioner
Credentials WHNP
Gender Female
NPI Issued 11/10/2016

Hospital and facility affiliations

Facilities where Gail Dewyn, WHNP 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.

Regents OF The University OF California Los Angeles
Santa Monica, 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 Gail Dewyn, WHNP. To verify Gail Dewyn, WHNP'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.

22
Total Claims
$212
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
22
Total Day Supply
183
Generic Drug Cost
$149

Patient Demographics

Average Patient Age
51.9 years
Avg HCC Risk Score
2.60

Women's Health Nurse Practitioner Overview

How Gail Dewyn, WHNP fits within the Women's Health Nurse Practitioner landscape nationally.

9,452
Women's Health Nurse Practitioner Providers in US
55
States with Women's Health Nurse Practitioner
262
Avg Claims per Provider

Gail Dewyn, WHNP's 22 claims are below the specialty average of 262.

Nearby Women's Health Nurse Practitioner Providers in California

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

Compare Women's Health Nurse Practitioner nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Women's Health Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Gail Dewyn, WHNP's specialty?
Gail Dewyn, WHNP specializes in Women's Health Nurse Practitioner and practices in Torrance, California. Credentials: WHNP.
How much does Gail Dewyn, WHNP prescribe under Medicare Part D?
In 2023, Gail Dewyn, WHNP wrote 22 Medicare Part D claims totaling $212 in drug costs for N/A beneficiaries.
Where is Gail Dewyn, WHNP located?
Gail Dewyn, WHNP is located at 4201 TORRANCE BLVD STE 600, Torrance, CA, 90503. Phone: (310) 316-4373.
What is Gail Dewyn, WHNP's NPI number?
Gail Dewyn, WHNP's National Provider Identifier (NPI) is 1386186153, issued on 11/10/2016.
How many Women's Health Nurse Practitioner providers are there in the US?
There are 9,452 Women's Health Nurse Practitioner providers across 55 states in the US. The average Women's Health Nurse Practitioner provider writes 262 Medicare Part D claims per year.
Does Gail Dewyn, WHNP accept Medicare?
Gail Dewyn, WHNP appears in CMS Medicare data with 22 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 Gail Dewyn, WHNP's credentials?
Gail Dewyn, WHNP's NPI is 1386186153 with credentials WHNP. 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