Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary K Popylisen, PT, ATC

Athletic Trainer in Berkeley, CA · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245441237

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Registry record

Entity type Individual (Type 1)

Name Mary K Popylisen

Credential PT, ATC

Sex Female

Practice address 2222 Bancroft Ext, Berkeley, CA, 94720

Phone (510) 642-5651

Fax (510) 643-5079

Enumeration date May 24, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 16912 (CA) Secondary

2255A2300X Athletic Trainer Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 80680 (CA) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mary Popylisen practice?

The practice location on file with NPPES is in Berkeley, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mary Popylisen?

The National Provider Identifier (NPI) for Mary Popylisen is 1245441237, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Jeffrey Nelson Sports Medicine (Family Medicine) Physician · Berkeley, CA NPI 1295720936 Scott Swanson Internal Medicine Physician · Berkeley, CA NPI 1144243254 Lee Fagen Adult Health Nurse Practitioner · Berkeley, CA NPI 1275639098 Valerie Stoller Family Nurse Practitioner · Berkeley, CA NPI 1396839304 Kerry Rogers Family Nurse Practitioner · Berkeley, CA NPI 1588734859 Josephine Billington Primary Care Nurse Practitioner · Berkeley, CA NPI 1215007745 Cindy Chang Sports Medicine (Family Medicine) Physician · Berkeley, CA NPI 1134290612 Debra Nelson Internal Medicine Physician · Berkeley, CA NPI 1699840751

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.