Dr. Timothy Walton Mackey, M.D.

Dr. Timothy Walton Mackey is a Pediatrics Physician provider (Pediatrics) practicing in Riverside, CA, registered in the NPPES registry with NPI 1265519557 since 2006. The credential MD stands for Doctor of Medicine.

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NPI	1265519557
Entity type	Individual (Type 1)
Name	Dr. Timothy Walton Mackey
Credential	M.D.
Sex	Male
Practice address	6950 BROCKTON AVE, Riverside, CA, 92506
Phone	9516868223
Fax	9516869617
Enumeration date	2006-11-01
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
208000000X	Pediatrics Physician	Primary	A46067	CA

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

Copy-ready billing details

Provider: Timothy Mackey, M.D.
NPI: 1265519557
Taxonomy: 208000000X (Pediatrics Physician)
Address: 6950 BROCKTON AVE, Riverside, CA, 92506

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1558383091	Alan Kwasman	Individual	Specialist	Riverside, CA
1366557910	Gary M. Feinberg, MD, Facs, Inc.	Organization	Specialist	Riverside, CA
1336227362	Pediatric Medical Group of Riverside Inc.	Organization	Pediatrics Physician	Riverside, CA
1477631422	Herbert Metsch	Individual	Pediatrics Physician	Riverside, CA

Verify this record

Cross-check NPI 1265519557 against the authoritative CMS record: view Dr. Timothy Walton Mackey on the official NPPES registry .

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 or validate an NPI number.

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 Timothy Mackey?

Timothy Mackey is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.