2026 NPPES data Obstetrics & Gynecology Nurse Practitioner NPI 1255607032 WHNP
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MAUREEN WESTFALL, WHNP

Obstetrics & Gynecology Nurse Practitioner in ANN ARBOR, Michigan. 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
138
Medicare Part D claims · 36 beneficiaries · Obstetrics & Gynecology Nurse Practitioner avg: 232

What the federal data shows

MAUREEN WESTFALL, WHNP filed 138 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Nurse Practitioner in ANN ARBOR, Michigan.

138
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.

MAUREEN WESTFALL, WHNP's Medicare Part D volume vs every U.S. prescriber

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

138 35th percentile higher than 35% 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 MAUREEN WESTFALL, WHNP?

Quality data not reported

NPI registry status

Active

Issued 03/27/2012

NPI 1255607032

Primary specialty

Obstetrics & Gynecology Nurse Practitioner

Niche

2,864 US NPIs in this specialty

Medicare Part D claims

138 41% vs specialty avg

2023 prescription claims

Specialty avg: 232

Specialty distribution in Michigan

How Obstetrics & Gynecology Nurse Practitioner compares to other specialties among Michigan providers

Michigan providers

Obstetrics & Gynecology Nurse Practitioner share within Michigan

1. Obstetrics & Gynecology Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Obstetrics & Gynecology Nurse Practitioner share within Michigan

Specialty board-certification context

Estimated specialty board-certified rate — Obstetrics & Gynecology Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Obstetrics & Gynecology Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Obstetrics & Gynecology Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Obstetrics & Gynecology 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).

MAUREEN WESTFALL, WHNP is a Obstetrics & Gynecology Nurse Practitioner provider practicing in ANN ARBOR, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: WHNP. NPI: 1255607032. 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.

MAUREEN WESTFALL, WHNP appears in the CMS NPPES registry as a Obstetrics & Gynecology Nurse Practitioner provider holding WHNP credentials at 4200 WHITEHALL DR STE 330, ANN ARBOR, MI, 48105, with a listed phone of (734) 434-0477. NPI 1255607032 was issued on 03/27/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WESTFALL 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 138 prescription claims written by this provider, covering 36 Medicare beneficiaries and totaling roughly $8K 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.

Obstetrics & Gynecology Nurse Practitioner is a narrow specialty nationwide, with 2,864 enrolled providers across 52 states and an average of 232 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

4200 WHITEHALL DR STE 330
ANN ARBOR, MI 48105

Provider Details

NPI 1255607032
Specialty Obstetrics & Gynecology Nurse Practitioner
Credentials WHNP
Gender Female
NPI Issued 03/27/2012

Hospital and facility affiliations

Facilities where MAUREEN WESTFALL, 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.

IHA HEALTH SERVICES CORPORATION
ANN ARBOR, MI

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 — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to MAUREEN WESTFALL, WHNP. To verify MAUREEN WESTFALL, WHNP's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan 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.

138
Total Claims
$8K
Total Drug Cost
36
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
205
Total Day Supply
5,033
Generic Drug Cost
$6K
Antibiotic Claims
14

Patient Demographics

Average Patient Age
64.8 years
Avg HCC Risk Score
0.61
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
Estradiol
26
Fluconazole
15
Alendronate Sodium
13
Norethindrone-E.Estradiol-Iron
13
Valacyclovir
Valacyclovir Hcl
11

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

Obstetrics & Gynecology Nurse Practitioner Overview

How MAUREEN WESTFALL, WHNP fits within the Obstetrics & Gynecology Nurse Practitioner landscape nationally.

2,864
Obstetrics & Gynecology Nurse Practitioner Providers in US
52
States with Obstetrics & Gynecology Nurse Practitioner
232
Avg Claims per Provider

MAUREEN WESTFALL, WHNP's 138 claims are below the specialty average of 232.

Nearby Obstetrics & Gynecology Nurse Practitioner Providers in Michigan

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

Compare Obstetrics & Gynecology Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is MAUREEN WESTFALL, WHNP's specialty?
MAUREEN WESTFALL, WHNP specializes in Obstetrics & Gynecology Nurse Practitioner and practices in ANN ARBOR, Michigan. Credentials: WHNP.
How much does MAUREEN WESTFALL, WHNP prescribe under Medicare Part D?
In 2023, MAUREEN WESTFALL, WHNP wrote 138 Medicare Part D claims totaling $8K in drug costs for 36 beneficiaries.
Where is MAUREEN WESTFALL, WHNP located?
MAUREEN WESTFALL, WHNP is located at 4200 WHITEHALL DR STE 330, ANN ARBOR, MI, 48105. Phone: (734) 434-0477.
What is MAUREEN WESTFALL, WHNP's NPI number?
MAUREEN WESTFALL, WHNP's National Provider Identifier (NPI) is 1255607032, issued on 03/27/2012.
How many Obstetrics & Gynecology Nurse Practitioner providers are there in the US?
There are 2,864 Obstetrics & Gynecology Nurse Practitioner providers across 52 states in the US. The average Obstetrics & Gynecology Nurse Practitioner provider writes 232 Medicare Part D claims per year.
What drugs does MAUREEN WESTFALL, WHNP prescribe most often?
Based on 2023 Medicare Part D data, MAUREEN WESTFALL, WHNP's most frequently prescribed drugs include Estradiol, Fluconazole, Alendronate Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MAUREEN WESTFALL, WHNP accept Medicare?
MAUREEN WESTFALL, WHNP appears in CMS Medicare data with 138 Part D claims and 36 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MAUREEN WESTFALL, WHNP's credentials?
MAUREEN WESTFALL, WHNP's NPI is 1255607032 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