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

Marian Ann Callanan, CNS

Individual provider Clinical Nurse Specialist · NPI 1265484984

Marian Ann Callanan, CNS is a Certified Clinical Nurse Specialist (Cns) in Stanford, California. Qualified in 1976, 50 years ago. Practices with Stanford Health Care, a 3,085-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
50
Licensed in
CA
In the registry since
2006
What do these letters mean?
CNS — Clinical Nurse Specialist
An advanced practice nurse specialising in a patient population or setting.

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Practice location Address checks out

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 498-5710
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Nurse Specialist (primary) Taxonomy 364S00000X · Licence 572 (CA)

Record details

NPI number1265484984
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNS
Sole proprietorYes
NPI enumeratedMay 17, 2006
Last updated in NPPESJuly 5, 2023
Certification dateJuly 5, 2023

Medicare enrollment

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

Medicare specialtyCERTIFIED CLINICAL NURSE SPECIALIST (CNS)
Medical schoolOTHER
Graduated 1976 (50 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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