Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Justine Elise Della Fave, MSN, CNM, WHNP-BC

Individual provider Women's Health Nurse Practitioner · NPI 1487108957

Mrs. Justine Elise Della Fave, MSN, CNM, WHNP-BC is a Nurse Practitioner in San Mateo, California. Qualified in 2016, 10 years ago. Practices with County of San Mateo, a 316-clinician group and accepts Medicare assignment. Licensed in California and New Jersey.

Years since qualifying
10
Licensed in
CA, NJ
In the registry since
2016
Specialties on file
2
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
CNM — Certified Nurse-Midwife
An advanced practice nurse who provides prenatal care and delivers babies.

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Practice location Address checks out

222 W 39th Ave
San Mateo, CA 94403-4364
Phone: (973) 655-4361
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Women's Health Nurse Practitioner (primary) Taxonomy 363LW0102X · Licence 95006045 (CA)
Women's Health Nurse Practitioner Taxonomy 363LW0102X · Licence 26NJ00722400 (NJ)

Record details

NPI number1487108957
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , CNM , WHNP-BC
Sole proprietorNo
NPI enumeratedAugust 12, 2016
Last updated in NPPESFebruary 1, 2021
Certification dateJanuary 13, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice County Of San Mateo — 316 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $22 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at County of San Mateo

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 316 clinicians in the practice; 12 are shown here.

Other providers in San Mateo