NPI registry status
Active
2026 NPPES data Primary Care Nurse Practitioner NPI 1043202427 DNP
Verify on CMS → Leeann Ranieri, DNP
Primary Care Nurse Practitioner in Stanford, 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 10,179 in Primary Care 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
508
Medicare Part D claims · 191 beneficiaries · Primary Care Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Leeann Ranieri, DNP filed 508 Medicare Part D claims in 2023 as a Primary Care Nurse Practitioner in Stanford, California.
- 508
- 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.
Leeann Ranieri, DNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
508 Top 34% higher than 66% 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 Leeann Ranieri, DNP?
Quality data not reportedPrimary specialty
Primary Care Nurse Practitioner
Medicare Part D claims
508 63% vs specialty avg
Specialty distribution in California
How Primary Care 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 Primary Care 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).
Leeann Ranieri, DNP appears in the CMS NPPES registry as a Primary Care Nurse Practitioner provider holding DNP credentials at 300 PASTEUR DR, Stanford, CA, 94305, with a listed phone of (650) 723-4000. NPI 1043202427 was issued on 08/22/2005.
Medicare Part D records for calendar year 2023 show 508 prescription claims written by this provider, covering 191 Medicare beneficiaries and totaling roughly $47K in drug spend, with an opioid prescribing rate of 2.8%.
Primary Care Nurse Practitioner is a mid-sized specialty nationwide, with 10,179 enrolled providers across 54 states and an average of 1,363 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 | 1043202427 |
|---|---|
| Specialty | Primary Care Nurse Practitioner |
| Credentials | DNP |
| Gender | Female |
| NPI Issued | 08/22/2005 |
Hospital and facility affiliations
Facilities where Leeann Ranieri, DNP 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.
Stanford Health Care
★★★★★ 5/5
Stanford, CA
Acute Care Hospitals
CMS CCN: 050441
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 Leeann Ranieri, DNP. To verify Leeann Ranieri, DNP'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.
508
Total Claims
$47K
Total Drug Cost
191
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,107
- Total Day Supply
- 31,635
- Generic Drug Cost
- $10K
- Opioid Claims
- 14 (2.8% rate)
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 72.5 years
- Avg HCC Risk Score
- 1.49
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 19, 65-74: 89, 75-84: 65, 85+: 18
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Leeann Ranieri, DNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
33 claims
- Atorvastatin Calcium
Atorvastatin Calcium
32 claims
- Levothyroxine Sodium
Levothyroxine Sodium
30 claims
- Tamsulosin Hcl
Tamsulosin Hcl
25 claims
- Losartan Potassium
Losartan Potassium
22 claims
- Lisinopril
Lisinopril
17 claims
- Gabapentin
Gabapentin
15 claims
- Metformin Hcl
Metformin Hcl
15 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 33 |
| Atorvastatin Calcium | 32 |
| Levothyroxine Sodium | 30 |
| Tamsulosin Hcl | 25 |
| Losartan Potassium | 22 |
| Lisinopril | 17 |
| Gabapentin | 15 |
| Metformin Hcl | 15 |
| Fluticasone Propionate | 14 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Primary Care Nurse Practitioner Overview
How Leeann Ranieri, DNP fits within the Primary Care Nurse Practitioner landscape nationally.
10,179
Primary Care Nurse Practitioner Providers in US
54
States with Primary Care Nurse Practitioner
1,363
Avg Claims per Provider
Leeann Ranieri, DNP's 508 claims are below the specialty average of 1,363.
Nearby Primary Care Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Ranieri.
Pernian Abadi
Bakersfield, CA
Ann Abraham
Long Beach, CA
Dr. Angelica Acevedo
FNP
Parlier, CA
Dr. Natalie Adame
PNP
Orange, CA
Dr. Tracie Adamson
NP, CNS, LCSW
Palo Alto, CA
Compare Primary Care 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 Primary Care 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 Leeann Ranieri, DNP's specialty? ▼
Leeann Ranieri, DNP specializes in Primary Care Nurse Practitioner and practices in Stanford, California. Credentials: DNP.
How much does Leeann Ranieri, DNP prescribe under Medicare Part D? ▼
In 2023, Leeann Ranieri, DNP wrote 508 Medicare Part D claims totaling $47K in drug costs for 191 beneficiaries.
Where is Leeann Ranieri, DNP located? ▼
Leeann Ranieri, DNP is located at 300 PASTEUR DR, Stanford, CA, 94305. Phone: (650) 723-4000.
What is Leeann Ranieri, DNP's NPI number? ▼
Leeann Ranieri, DNP's National Provider Identifier (NPI) is 1043202427, issued on 08/22/2005.
Does Leeann Ranieri, DNP prescribe opioids? ▼
Yes, Leeann Ranieri, DNP had 14 opioid claims in 2023 with an opioid prescribing rate of 2.8%.
How many Primary Care Nurse Practitioner providers are there in the US? ▼
There are 10,179 Primary Care Nurse Practitioner providers across 54 states in the US. The average Primary Care Nurse Practitioner provider writes 1,363 Medicare Part D claims per year.
What drugs does Leeann Ranieri, DNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Leeann Ranieri, DNP's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leeann Ranieri, DNP accept Medicare? ▼
Leeann Ranieri, DNP appears in CMS Medicare data with 508 Part D claims and 191 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leeann Ranieri, DNP's credentials? ▼
Leeann Ranieri, DNP's NPI is 1043202427 with credentials DNP. 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
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.