Misty Leigh Mahaffey, NP
Nurse Practitioner · Stanford, CA
Misty Leigh Mahaffey, NP is a nurse practitioner with a practice address in Stanford, California, and NPI 1831569391, issued on Sep 28, 2015. Check the license (California 95003142, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Misty Leigh Mahaffey
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 95003142 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Sep 28, 2015
- Record last updated
- Dec 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20151201001783); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Misty Leigh Mahaffey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95003142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average nurse practitioner in 2024
2,378 Medicare Part D claims for 466 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims. 54 claims were for opioids.
Most prescribed
- Jakafi174 claims
- Acyclovir163 claims
- Hydroxyurea149 claims
- Eliquis140 claims
- Calquence139 claims
- Brukinsa109 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,059.20
39 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
572 nurse practitioner records list a practice address in Stanford
They are 572 of the 5,606 NPPES records with a practice address in Stanford, and 8,223 nurse practitioner records in California.
All 572 in Stanford → All 8,223 in California → Every provider in Stanford →
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Common questions
What is Misty Leigh Mahaffey, NP's NPI number?
Misty Leigh Mahaffey, NP's National Provider Identifier (NPI) is 1831569391, issued on Sep 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Misty Leigh Mahaffey, NP located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Misty Leigh Mahaffey, NP's license?
NPPES lists California license number 95003142, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Misty Leigh Mahaffey, NP prescribe under Medicare Part D?
In 2024, Misty Leigh Mahaffey, NP had 2,378 Medicare Part D claims for 466 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Misty Leigh Mahaffey, NP's MIPS final score?
The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.