Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Allison Petersdorf, MA PPS, MFT
School Counselor in Livermore, CA · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861347957
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Registry record
Entity type Individual (Type 1)
Name Allison Petersdorf
Credential MA PPS, MFT
Sex Female
Practice address 2253 Fifth St, Livermore, CA, 94550
Phone (925) 606-4709
Enumeration date Mar 3, 2026
Last updated in NPPES Mar 3, 2026
Taxonomy & licenses
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 53984 (CA) Secondary
101YS0200X School Counselor Behavioral Health & Social Service Providers · License 240041019 (CA) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Where does Allison Petersdorf practice?
The practice location on file with NPPES is in Livermore, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allison Petersdorf?
The National Provider Identifier (NPI) for Allison Petersdorf is 1861347957, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-03.