Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sylvia Hayashi, NP

Obstetrics & Gynecology Nurse Practitioner in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1306806195

Verified

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Registry record

Entity type Individual (Type 1)

Name Sylvia Hayashi

Credential NP

Sex Female

Practice address 4616 N 51st Ave, Phoenix, AZ, 85031

Phone (623) 247-6266

Fax (623) 247-9742

Enumeration date Mar 24, 2006

Last updated in NPPES Dec 10, 2012

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN060824 (AZ) Secondary

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP327 (AZ) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
461715	Medicaid	AZ	-

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 Sylvia Hayashi practice?

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

What is the NPI number for Sylvia Hayashi?

The National Provider Identifier (NPI) for Sylvia Hayashi is 1306806195, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Frances Aragon Counselor · Phoenix, AZ NPI 1649230616 Lydia Ehlenberger Obstetrics & Gynecology Physician · Phoenix, AZ NPI 1700846631 Shawn Turley Counselor · Phoenix, AZ NPI 1568424307 William T. Holland MD PC Internal Medicine Physician · Phoenix, AZ NPI 1932269008 William Holland Internal Medicine Physician · Phoenix, AZ NPI 1114087293 Michelle Hargis Orthopedic Physical Therapist · Phoenix, AZ NPI 1467642306 Smi Imaging, LLC Diagnostic Radiology Physician · Phoenix, AZ NPI 1083944805 Cynthia Hinojosa Naturopath · Phoenix, AZ NPI 1083039481

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-10.