Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Sylvia Mariella Firnhaber Bonner, MD

Specialist in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1801866827

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Registry record

Entity type Individual (Type 1)

Name Dr. Sylvia Mariella Firnhaber Bonner

Credential MD

Sex Female

Practice address 2423 W Dunlap Ave, Phoenix, AZ, 85021

Phone (602) 468-0317

Fax (602) 468-0350

Enumeration date Jan 23, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 27091 (AZ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3053151	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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Sylvia Bonner?

Sylvia Bonner is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.