NPPES file of Aug 9, 2026

Rachel S. Krellenstein

Mental Health Counselor · San Mateo, CA

Rachel S. Krellenstein is a mental health counselor with a practice address in San Mateo, California, and NPI 1245465236, issued on May 20, 2009. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245465236
Name
Rachel S. Krellenstein
Primary taxonomy
Mental Health Counselor 101YM0800X
Practice location
1108 S EL Camino Real, San Mateo, CA 94402
Phone
(650) 458-0026
Enumerated
May 20, 2009
Record last updated
Dec 22, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(650) 458-0027
Medicare enrollment
Enrolled (PECOS I20220523001544); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1108 S EL Camino Real

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bruce AdamsMarriage & Family Therapist1043447345
  2. Marissa Arora, LMFTMarriage & Family Therapist1366083016
  3. Monet Burpee, ASWSocial Worker1841571171
  4. Aliya CarnecerOther Technician1477372340
  5. Stacey ChangCommunity Health Worker1427897750
  6. Yelice Corea, NPPsychiatric/Mental Health Nurse Practitioner1013078682

Verify Rachel S. Krellenstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Access Institute For Psychological ServicesSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rachel S. Krellenstein among 28,617 mental health counselor records in California

Rachel S. Krellenstein is one of 28,617 mental health counselor records with a practice address in California. 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 25% of them.

  • NPI issued2009 · 25% of these records are older, 71% newer
  • In a Medicare fileYes · 1% of these records are
  • In the CMS Doctors and Clinicians fileYes · 3% of these records are
  • Graduated2010 · median 2015 among the 722 with a school on file
  • Record last updated2014 · 71% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

182 mental health counselor records list a practice address in San Mateo

They are 182 of the 3,909 NPPES records with a practice address in San Mateo, and 28,617 mental health counselor records in California.

The 8 mental health counselor records with the nearest ZIP codes

  1. Laura Bain, MSSan Mateo, CA 944021841477148
  2. Dawn Beltram, M.A.San Mateo, CA 944021568698173
  3. Jay Bray, L.C.S.W.San Mateo, CA 944021467462937
  4. Adrienne Cane Ilang, M.A.San Mateo, CA 944021649344623
  5. Sarah Davis, M.A.San Mateo, CA 944021033395710
  6. Freida Hilts, PHD, LEPSan Mateo, CA 944021588890289
  7. Walter HuguetSan Mateo, CA 944021205951001
  8. Kari KendzerskiSan Mateo, CA 944021851608970

Common questions

What is Rachel S. Krellenstein's NPI number?

Rachel S. Krellenstein's National Provider Identifier (NPI) is 1245465236, issued on May 20, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Rachel S. Krellenstein located?

The NPPES record lists a practice address at 1108 S EL Camino Real, San Mateo, CA, 94402. Phone: (650) 458-0026. Providers update this record themselves, so call before visiting.

How can I verify Rachel S. Krellenstein's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.