Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gunilla H M Petersen-Billings, OTR, CHT

Occupational Therapist in Fairfield, CA · enumerated 2006.

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

National Provider Identifier

1427148204

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Registry record

Entity type Individual (Type 1)

Name Gunilla H M Petersen-Billings

Credential OTR, CHT

Sex Female

Practice address 2702 Low Ct, Fairfield, CA, 94534

Phone (707) 432-2600

Fax (707) 432-2601

Enumeration date Oct 13, 2006

Last updated in NPPES Apr 30, 2013

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OT1371 (CA) Primary

225XH1200X Hand Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OT1371 (CA) Secondary

Other identifiers

Identifier	Type	State	Issuer
CT0013710	Medicaid	CA	-

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.

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Frequently asked questions

What is the NPI number for Gunilla Petersen-Billings?

The National Provider Identifier (NPI) for Gunilla Petersen-Billings is 1427148204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gunilla Petersen-Billings practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-30.