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

Martha Plack, RN

Individual provider Registered Nurse · NPI 1891531349

Martha Plack, RN is a Nurse Practitioner in San Francisco, California. Qualified in 2024, 2 years ago. Practices with Felton Institute, a 14-clinician group and offers telehealth. Licensed in California.

Years since qualifying
2
Licensed in
CA
In the registry since
2024
Specialties on file
2
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1500 Franklin St
San Francisco, CA 94109-4523
Phone: (415) 474-7310
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 95212247 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 95212247 (CA)

Record details

NPI number1891531349
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorYes
NPI enumeratedJuly 3, 2024
Last updated in NPPESSeptember 18, 2024
Certification dateAugust 30, 2024

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Felton Institute — 14 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients12
Services billed 34 a service is one billed item, such as a visit, a test or a procedure
Average patient age40

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Felton Institute

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 14 clinicians in the practice; 12 are shown here.

Other providers in San Francisco