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

MS. Rachel S Krellenstein

Individual provider Clinical Social Worker · NPI 1245465236

MS. Rachel S Krellenstein is a Clinical Social Worker in San Mateo, California. Qualified in 2010, 16 years ago. Practices with Access Institute for Psychological Services, a 4-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
16
Licensed in
CA
In the registry since
2009
Specialties on file
2
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Practice location Address checks out

1108 S El Camino Real
San Mateo, CA 94402-2804
Phone: (650) 458-0026
Fax: (650) 458-0027
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X (CA)
Clinical Social Worker Taxonomy 1041C0700X (CA)

Record details

NPI number1245465236
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedMay 20, 2009
Last updated in NPPESDecember 22, 2014

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Access Institute For Psychological Services — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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