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

Sonja Demara Cahoon, CNM

Individual provider Advanced Practice Midwife · NPI 1902104250

Sonja Demara Cahoon, CNM is a Certified Nurse Midwife (CNM) in Fairfield, California. Qualified in 2009, 17 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
17
Licensed in
CA
In the registry since
2011
Specialties on file
2
What do these letters mean?
CNM — Certified Nurse-Midwife
An advanced practice nurse who provides prenatal care and delivers babies.

See every abbreviation used in this directory →

Practice location Address checks out

2101 Courage Dr
Fairfield, CA 94533-6717
Phone: (707) 428-1131
Fax: (707) 428-1131
Show map & directions

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

Additional practice locations (1)

  • 27287 Patrick Ave, Hayward, CA 94544-4405 — (408) 795-3600

Specialties & licences

Registered Nurse (primary) Taxonomy 163W00000X · Licence 537712 (CA)
Advanced Practice Midwife Taxonomy 367A00000X

Record details

NPI number1902104250
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNM
Sole proprietorNo
NPI enumeratedMarch 10, 2011
Last updated in NPPESAugust 5, 2025
Certification dateAugust 1, 2025

Medicare enrollment

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

Medicare specialtyCERTIFIED NURSE MIDWIFE (CNM)
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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