Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Peter Michael Nelken, NP, ANP-BC

Individual provider Orthopedic Registered Nurse · NPI 1538431804

Peter Michael Nelken, NP, ANP-BC is a Nurse Practitioner in San Francisco, California. Qualified in 2010, 16 years ago. Practices with UCSF Medical Group Business Services, a 1,531-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
16
Licensed in
CA
In the registry since
2012
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

505 Parnassus Ave
San Francisco, CA 94143-2204
Phone: (415) 353-1387
Show map & directions

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

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence 20654 (CA)
Orthopedic Registered Nurse Taxonomy 163WX0800X · Licence 707667 (CA)

Record details

NPI number1538431804
Entity typeIndividual (Type 1)
GenderMale
Credentials NP , ANP-BC
Sole proprietorNo
NPI enumeratedFebruary 2, 2012
Last updated in NPPESFebruary 2, 2012

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Ucsf Medical Group Business Services — 1531 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare