NPI registry status
Active
2026 NPPES data Women's Health Nurse Practitioner NPI 1881070902 WHNP
Verify on CMS → Holly Johnson, WHNP
Women's Health Nurse Practitioner in San Mateo, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,754 in Women's Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
73
Medicare Part D claims · 15 beneficiaries · Women's Health Nurse Practitioner avg: 269
Industry payments
$30.22
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Holly Johnson, WHNP filed 73 Medicare Part D claims in 2024 as a Women's Health Nurse Practitioner in San Mateo, California.
- 73
- Part D claims, 2024
- $30.22
- industry payments (Sunshine Act)
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Holly Johnson, WHNP
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1881070902), first enumerated 07/31/2015.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 73 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$30.22 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
California statewide board action statistics are published annually — these figures describe aggregate state activity, not Holly Johnson, WHNP's individual license status. Verify directly with the state medical board.
Source: MBC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1881070902 · Women's Health Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1881070902
- ENUM-MID 2015
- TAX-MID 10K Women's Health
- RX-TRACE 73
- BOOK-LIGHT 899 in California
- PHOTO-ENUM Ashley Walsh, APN · 2015
Holly Johnson, WHNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
73 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Holly Johnson, WHNP?
Quality data not reportedPrimary specialty
Women's Health Nurse Practitioner
Medicare Part D claims
73 73% vs specialty avg
Specialty distribution in California
How Women's Health Nurse Practitioner compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Women's Health Nurse Practitioner. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1881070902 |
|---|---|
| Specialty | Women's Health Nurse Practitioner |
| Credentials | WHNP |
| Gender | Female |
| NPI Issued | 07/31/2015 |
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 Holly Johnson, WHNP. Source: openpaymentsdata.cms.gov.
Total received
$30
Largest payer
ATRICURE, 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 Holly Johnson, WHNP. To verify Holly Johnson, 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 2024.
73
Total Claims
$4K
Total Drug Cost
15
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 121.367
- Total Day Supply
- 3,580
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 59.0 years
- Avg HCC Risk Score
- 1.05
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Holly Johnson, WHNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Progesterone
Progesterone
25 claims
- Estradiol
Estradiol
19 claims
- Estradiol (Twice W…
Estradiol (Twice Weekly)
19 claims
| Drug | Claims |
|---|---|
| Progesterone Progesterone, Micronized | 25 |
| Estradiol | 19 |
| Estradiol (Twice Weekly) Estradiol | 19 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Women's Health Nurse Practitioner Overview
How Holly Johnson, WHNP fits within the Women's Health Nurse Practitioner landscape nationally.
9,754
Women's Health Nurse Practitioner Providers in US
55
States with Women's Health Nurse Practitioner
269
Avg Claims per Provider
Holly Johnson, WHNP's 73 claims are below the specialty average of 269.
Nationwide Women's Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Johnson, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2015)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Johnson.
One of 899 Women's Health Nurse Practitioner providers enrolled in California, 5 are shown here.
Susan Abbott Rogge
NP
Sacramento, CA
Carine Abinader
Loma Linda, CA
Tina Abolhassani Bloomer
NP
Orange, CA
Lauren Abrahamson
CNM, NP, MSN
Walnut Creek, CA
Laura Abrignani
N.P.
Santa Barbara, CA
Compare Women's Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Holly Johnson, WHNP's specialty? ▼
Holly Johnson, WHNP specializes in Women's Health Nurse Practitioner and practices in San Mateo, California. Credentials: WHNP.
How much does Holly Johnson, WHNP prescribe under Medicare Part D? ▼
In 2024, Holly Johnson, WHNP wrote 73 Medicare Part D claims totaling $4K in drug costs for 15 beneficiaries.
Where is Holly Johnson, WHNP located? ▼
Holly Johnson, WHNP is located at 951 MARINERS ISLAND BLVD STE 300, San Mateo, CA, 94404. Phone: (772) 217-4557.
What is Holly Johnson, WHNP's NPI number? ▼
Holly Johnson, WHNP's National Provider Identifier (NPI) is 1881070902, issued on 07/31/2015.
How many Women's Health Nurse Practitioner providers are there in the US? ▼
There are 9,754 Women's Health Nurse Practitioner providers across 55 states in the US. The average Women's Health Nurse Practitioner provider writes 269 Medicare Part D claims per year.
What drugs does Holly Johnson, WHNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Holly Johnson, WHNP's most frequently prescribed drugs include Progesterone, Estradiol, Estradiol (Twice Weekly). This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Holly Johnson, WHNP accept Medicare? ▼
Holly Johnson, WHNP appears in CMS Medicare data with 73 Part D claims and 15 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Holly Johnson, WHNP's credentials? ▼
Holly Johnson, WHNP's NPI is 1881070902 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.