NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1891028213 RN, MSN, FPMHNP-BC
Verify on CMS → Margaret Dann, RN, MSN, FPMHNP-BC
Registered Nurse in Greenbrae, 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 177,204 in Registered Nurse, 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
182
Medicare Part D claims · 20 beneficiaries · Registered Nurse avg: 1K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.3/100
▲ 7 pts above national avg 83.1 · Exceptional
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Margaret Dann, RN, MSN, FPMHNP-BC reported a CMS MIPS final score of 90.3/100 - above the 83.1 national average - and filed 182 Medicare Part D claims in 2023.
- 90.3/100
- MIPS score · +7 vs avg
- 182
- Part D claims, 2023
- 84%
- generic prescribing
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.
Margaret Dann, RN, MSN, FPMHNP-BC's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
90 Top 40% higher than 60% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Margaret Dann, RN, MSN, FPMHNP-BC sits
This provider among registered nurse peers
Across the 3,327 registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Margaret Dann, RN, MSN, FPMHNP-BC writes more Part D claims than 36% of them and scores higher on MIPS quality than 61% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one registered nurse peer from a representative sample of 60; the gold marker is Margaret Dann, RN, MSN, FPMHNP-BC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Margaret Dann, RN, MSN, FPMHNP-BC?
High performer (top quartile)Primary specialty
Registered Nurse
Medicare Part D claims
182 82% vs specialty avg
MIPS final score
90.3/100 7.2 pts vs avg
Specialty distribution in California
How Registered Nurse compares to other specialties among California providers
Medicare quality performance, MIPS
Margaret Dann, RN, MSN, FPMHNP-BC's 2023 MIPS final score plotted against the Registered Nurse national average
- MIPS Final Score
- 90.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Registered Nurse) - 90.3/100 vs national avg 83.1
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).
Margaret Dann, RN, MSN, FPMHNP-BC appears in the CMS NPPES registry as a Registered Nurse provider holding RN, MSN, FPMHNP-BC credentials at 250 BON AIR RD, Greenbrae, CA, 94904, with a listed phone of (415) 473-2538. NPI 1891028213 was issued on 09/16/2009.
Medicare Part D records for calendar year 2023 show 182 prescription claims written by this provider, covering 20 Medicare beneficiaries and totaling roughly $108K in drug spend, split 16% brand-name and 84% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 90.3/100 for the 2023 performance year (Quality 70, Cost 81.6), compared with the national average of 83.1.
Registered Nurse is a high-volume specialty nationwide, with 177,204 enrolled providers across 56 states and an average of 1,000 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
Provider Details
| NPI | 1891028213 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | RN, MSN, FPMHNP-BC |
| Gender | Female |
| NPI Issued | 09/16/2009 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
90.2542
Final Score
Avg: 83.1
70.0332
Quality
81.6475
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Margaret Dann, RN, MSN, FPMHNP-BC 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.
City And County OF San Francisco
San Francisco, 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 Margaret Dann, RN, MSN, FPMHNP-BC. To verify Margaret Dann, RN, MSN, FPMHNP-BC'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
Margaret Dann, RN, MSN, FPMHNP-BC - brand share 16.0%
Registered Nurse average
16% brand-name claims vs 84% generic, on 182 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.
182
Total Claims
$108K
Total Drug Cost
20
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 280
- Total Day Supply
- 8,148
- Brand vs Generic
- 16% brand / 84% generic
- Brand Drug Cost
- $76K
- Generic Drug Cost
- $32K
Patient Demographics
- Average Patient Age
- 56.5 years
- Avg HCC Risk Score
- 0.85
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Margaret Dann, RN, MSN, FPMHNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Bupropion Xl
Bupropion Xl
29 claims
- Quetiapine Fumarate
Quetiapine Fumarate
22 claims
- Abilify Maintena
Abilify Maintena
21 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
19 claims
- Aripiprazole
Aripiprazole
14 claims
| Drug | Claims |
|---|---|
| Bupropion Xl Bupropion Hcl | 29 |
| Quetiapine Fumarate | 22 |
| Abilify Maintena Aripiprazole | 21 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 19 |
| Aripiprazole | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Margaret Dann, RN, MSN, FPMHNP-BC fits within the Registered Nurse landscape nationally.
177,204
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider
Margaret Dann, RN, MSN, FPMHNP-BC's 182 claims are below the specialty average of 1,000.
Nearby Registered Nurse Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Dann.
Dr. Patricia A Onyango
RN
Modesto, CA
Dr. Adelaida A Zavala
RN
Ontario, CA
Dr. Anu Aaltonen-Bond
RN
Rancho Cordova, CA
Victoria Aardappel
Chico, CA
Dr. Denise Aaron
RN
San Diego, CA
Compare Registered Nurse 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 Registered Nurse 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.
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Frequently Asked Questions
What is Margaret Dann, RN, MSN, FPMHNP-BC's specialty? ▼
Margaret Dann, RN, MSN, FPMHNP-BC specializes in Registered Nurse and practices in Greenbrae, California. Credentials: RN, MSN, FPMHNP-BC.
How much does Margaret Dann, RN, MSN, FPMHNP-BC prescribe under Medicare Part D? ▼
In 2023, Margaret Dann, RN, MSN, FPMHNP-BC wrote 182 Medicare Part D claims totaling $108K in drug costs for 20 beneficiaries.
What is Margaret Dann, RN, MSN, FPMHNP-BC's Medicare quality score? ▼
Margaret Dann, RN, MSN, FPMHNP-BC has a CMS MIPS Final Score of 90.3/100 (Quality: 70, Cost: 81.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Margaret Dann, RN, MSN, FPMHNP-BC located? ▼
Margaret Dann, RN, MSN, FPMHNP-BC is located at 250 BON AIR RD, Greenbrae, CA, 94904. Phone: (415) 473-2538.
What is Margaret Dann, RN, MSN, FPMHNP-BC's NPI number? ▼
Margaret Dann, RN, MSN, FPMHNP-BC's National Provider Identifier (NPI) is 1891028213, issued on 09/16/2009.
Does Margaret Dann, RN, MSN, FPMHNP-BC prescribe more brand-name or generic drugs? ▼
Margaret Dann, RN, MSN, FPMHNP-BC's prescribing is 16% brand-name and 84% generic drugs by claim count, with $76K in brand drug costs.
How many Registered Nurse providers are there in the US? ▼
There are 177,204 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Margaret Dann, RN, MSN, FPMHNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Margaret Dann, RN, MSN, FPMHNP-BC's most frequently prescribed drugs include Bupropion Xl, Quetiapine Fumarate, Abilify Maintena. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Margaret Dann, RN, MSN, FPMHNP-BC accept Medicare? ▼
Margaret Dann, RN, MSN, FPMHNP-BC appears in CMS Medicare data with 182 Part D claims and 20 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Margaret Dann, RN, MSN, FPMHNP-BC's credentials? ▼
Margaret Dann, RN, MSN, FPMHNP-BC's NPI is 1891028213 with credentials RN, MSN, FPMHNP-BC. 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 (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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.