NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1649361908 FNP
Verify on CMS → Angela Guadagni, FNP
Nurse Practitioner in Napa, 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 87,700 in 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
3K
Medicare Part D claims · 217 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Angela Guadagni, FNP filed 3,168 Medicare Part D claims in 2023 as a Nurse Practitioner in Napa, California, prescribing 82% generic.
- 3K
- Part D claims, 2023
- 82%
- 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.
Angela Guadagni, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
3,168 Top 11% higher than 89% of 1,370,886 prescribers
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 Angela Guadagni, FNP?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
3,168 192% vs specialty avg
Specialty distribution in California
How 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 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).
Angela Guadagni, FNP appears in the CMS NPPES registry as a Nurse Practitioner provider holding FNP credentials at 300 HARTLE CT, Napa, CA, 94559, with a listed phone of (707) 254-1775. NPI 1649361908 was issued on 09/28/2006.
Medicare Part D records for calendar year 2023 show 3,168 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $403K in drug spend, split 16% brand-name and 82% generic by claim count, with an opioid prescribing rate of 2.7%.
Nurse Practitioner is a high-volume specialty nationwide, with 87,700 enrolled providers across 56 states and an average of 1,084 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 | 1649361908 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 09/28/2006 |
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 Angela Guadagni, FNP. To verify Angela Guadagni, FNP'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
Angela Guadagni, FNP - brand share 16.0%
Nurse Practitioner average
16% brand-name claims vs 82% generic, on 3,168 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.
3,168
Total Claims
$403K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 6,201
- Total Day Supply
- 181,934
- Brand vs Generic
- 16% brand / 82% generic
- Brand Drug Cost
- $323K
- Generic Drug Cost
- $75K
- Opioid Claims
- 85 (2.7% rate)
- Antibiotic Claims
- 26
Patient Demographics
- Average Patient Age
- 69.5 years
- Avg HCC Risk Score
- 1.28
- Gender Split
- 62% female / 38% male
- Age Distribution
- <65: 52, 65-74: 93, 75-84: 56, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Angela Guadagni, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Metformin Hcl
Metformin Hcl
199 claims
- Atorvastatin Calcium
Atorvastatin Calcium
181 claims
- Lisinopril
Lisinopril
172 claims
- Gabapentin
Gabapentin
151 claims
- Levothyroxine Sodium
Levothyroxine Sodium
117 claims
- Hydrochlorothiazide
Hydrochlorothiazide
91 claims
- Amlodipine Besylate
Amlodipine Besylate
90 claims
- Trazodone Hcl 75
Trazodone Hcl
75 claims
| Drug | Claims |
|---|---|
| Metformin Hcl | 199 |
| Atorvastatin Calcium | 181 |
| Lisinopril | 172 |
| Gabapentin | 151 |
| Levothyroxine Sodium | 117 |
| Hydrochlorothiazide | 91 |
| Amlodipine Besylate | 90 |
| Trazodone Hcl | 75 |
| Losartan Potassium | 67 |
| Metoprolol Succinate | 65 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Angela Guadagni, FNP fits within the Nurse Practitioner landscape nationally.
87,700
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider
Angela Guadagni, FNP's 3,168 claims are above the specialty average of 1,084.
Nearby Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Guadagni.
Dr. Barbara Aaronson
RN/NURSE PRACTITONER
Los Angeles, CA
Dr. Albert Aba
AGNP
San Francisco, CA
Venice Ababat
Colton, CA
Dr. Martha Ababneh
CNA
El Monte, CA
Dr. Chelsea Abad
CRNP, AGPCNP - BC
Duarte, CA
Compare 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 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.
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Frequently Asked Questions
What is Angela Guadagni, FNP's specialty? ▼
Angela Guadagni, FNP specializes in Nurse Practitioner and practices in Napa, California. Credentials: FNP.
How much does Angela Guadagni, FNP prescribe under Medicare Part D? ▼
In 2023, Angela Guadagni, FNP wrote 3,168 Medicare Part D claims totaling $403K in drug costs for 217 beneficiaries.
Where is Angela Guadagni, FNP located? ▼
Angela Guadagni, FNP is located at 300 HARTLE CT, Napa, CA, 94559. Phone: (707) 254-1775.
What is Angela Guadagni, FNP's NPI number? ▼
Angela Guadagni, FNP's National Provider Identifier (NPI) is 1649361908, issued on 09/28/2006.
Does Angela Guadagni, FNP prescribe more brand-name or generic drugs? ▼
Angela Guadagni, FNP's prescribing is 16% brand-name and 82% generic drugs by claim count, with $323K in brand drug costs.
Does Angela Guadagni, FNP prescribe opioids? ▼
Yes, Angela Guadagni, FNP had 85 opioid claims in 2023 with an opioid prescribing rate of 2.7%.
How many Nurse Practitioner providers are there in the US? ▼
There are 87,700 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Angela Guadagni, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Angela Guadagni, FNP's most frequently prescribed drugs include Metformin Hcl, Atorvastatin Calcium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Angela Guadagni, FNP accept Medicare? ▼
Angela Guadagni, FNP appears in CMS Medicare data with 3,168 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Angela Guadagni, FNP's credentials? ▼
Angela Guadagni, FNP's NPI is 1649361908 with credentials FNP. 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.
- 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
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.