Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William Blake Falk, MSN, APRN, BC

Individual provider Family Nurse Practitioner · NPI 1609942861

William Blake Falk, MSN, APRN, BC is a Nurse Practitioner in San Francisco, California. Qualified in 2003, 23 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Licensed in
CA
In the registry since
2006
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
BC — Board Certified
Appended to another credential to show current board certification, as in APRN-BC.

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Practice location Address checks out

46 Cragmont Ave
San Francisco, CA 94116-1308
Phone: (415) 823-5131
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 14427 (CA)

Record details

NPI number1609942861
Entity typeIndividual (Type 1)
GenderMale
Credentials MSN , APRN , BC
Sole proprietorNo
NPI enumeratedNovember 28, 2006
Last updated in NPPESSeptember 25, 2012

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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