NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1659712776 NP
Verify on CMS → Sahar Weil, NP
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 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
403
Medicare Part D claims · 101 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
74.6/100
▼ 9 pts below national avg 83.5 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Sahar Weil, NP reported a CMS MIPS final score of 74.6/100 - below the 83.5 national average - and filed 403 Medicare Part D claims in 2023.
- 74.6/100
- MIPS score · -9 vs avg
- 403
- Part D claims, 2023
- 89%
- generic prescribing
- ≥13th
- pct among measured MIPS (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.
CMS NPPES provider registry desk
NPI 1659712776 · Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-BELOW · RX-LIGHT · BOOK-MID · PHOTO-FINISH
- NPI-10 1659712776
- ENUM-MID 2013
- TAX-MEGA 88K Nurse Practitioner
- MIPS-BELOW 74.6/100
- RX-LIGHT 403
- BOOK-MID 6,916 in California
- PHOTO-FINISH Shibbi Alexander · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Weil · this prov…
Weil · this provider
74.6 MIPS pts
- Tyonn Barbera · …
Tyonn Barbera
74.6 MIPS pts
- Shibbi Alexander…
Shibbi Alexander
74.6 MIPS pts
- Mary Grace Alip …
Mary Grace Alip
74.6 MIPS pts
- Agnes Augustine …
Agnes Augustine
74.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Sahar Weil, NP's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
75 ≥ 13th percentile 13% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured 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.
The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Sahar Weil, NP sits
This provider among nurse practitioner peers
Across the 13,205 nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Sahar Weil, NP writes more Part D claims than 52% of them and scores higher on MIPS quality than 13% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one nurse practitioner peer from a representative sample of 60; the gold marker is Sahar Weil, NP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Sahar Weil, NP?
Below national averagePrimary specialty
Nurse Practitioner
Medicare Part D claims
403 63% vs specialty avg
MIPS final score
74.6/100 8.9 pts vs avg
Specialty distribution in California
How Nurse Practitioner compares to other specialties among California providers
Medicare quality performance, MIPS
Sahar Weil, NP's 2023 MIPS final score plotted against the Nurse Practitioner national average
- MIPS Final Score
- 74.6/100
- vs 83.5 national avg · 2023 performance year
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 | 1659712776 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | NP |
| Gender | Female |
| NPI Issued | 07/17/2013 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
74.5984
Final Score
Measured-score avg: 83.5
56.1252
Quality
59.2027
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Sahar Weil, NP 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 Sahar Weil, NP. To verify Sahar Weil, NP'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
Sahar Weil, NP - brand share 11.0%
Nurse Practitioner average
11% brand-name claims vs 89% generic, on 403 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.
403
Total Claims
$764K
Total Drug Cost
101
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 604
- Total Day Supply
- 17,714
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $737K
- Generic Drug Cost
- $27K
Patient Demographics
- Average Patient Age
- 68.5 years
- Avg HCC Risk Score
- 1.83
- Gender Split
- 49% female / 51% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Sahar Weil, NP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
152 claims
- Mycophenolate Mofe…
Mycophenolate Mofetil
61 claims
- Pyridostigmine Bro…
Pyridostigmine Bromide
61 claims
- Gabapentin 25
Gabapentin
25 claims
- Azathioprine 15
Azathioprine
15 claims
- Tacrolimus 12
Tacrolimus
12 claims
| Drug | Claims |
|---|---|
| Prednisone | 152 |
| Mycophenolate Mofetil | 61 |
| Pyridostigmine Bromide | 61 |
| Gabapentin | 25 |
| Azathioprine | 15 |
| Tacrolimus | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Sahar Weil, NP 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
Sahar Weil, NP's 403 claims are below the specialty average of 1,084.
Nationwide Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Weil, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (74.6 here).
Same NPPES enumeration year (2013)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nurse Practitioner Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Weil.
One of 6,916 Nurse Practitioner providers enrolled in California, 5 are shown here.
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 →
Frequently Asked Questions
What is Sahar Weil, NP's specialty? ▼
Sahar Weil, NP specializes in Nurse Practitioner and practices in Stanford, California. Credentials: NP.
How much does Sahar Weil, NP prescribe under Medicare Part D? ▼
In 2023, Sahar Weil, NP wrote 403 Medicare Part D claims totaling $764K in drug costs for 101 beneficiaries.
What is Sahar Weil, NP's Medicare quality score? ▼
Sahar Weil, NP has a CMS MIPS Final Score of 74.6/100 (Quality: 56.1, Cost: 59.2). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sahar Weil, NP located? ▼
Sahar Weil, NP is located at 300 PASTEUR DR, Stanford, CA, 94305. Phone: (650) 723-4000.
What is Sahar Weil, NP's NPI number? ▼
Sahar Weil, NP's National Provider Identifier (NPI) is 1659712776, issued on 07/17/2013.
Does Sahar Weil, NP prescribe more brand-name or generic drugs? ▼
Sahar Weil, NP's prescribing is 11% brand-name and 89% generic drugs by claim count, with $737K in brand drug costs.
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 Sahar Weil, NP prescribe most often? ▼
Based on 2023 Medicare Part D data, Sahar Weil, NP's most frequently prescribed drugs include Prednisone, Mycophenolate Mofetil, Pyridostigmine Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sahar Weil, NP accept Medicare? ▼
Sahar Weil, NP appears in CMS Medicare data with 403 Part D claims and 101 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sahar Weil, NP's credentials? ▼
Sahar Weil, NP's NPI is 1659712776 with credentials NP. 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
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.