Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregg Steven Zankman, D.O.
Pediatrics Physician in Mesa, AZ · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1558343871
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Registry record
Entity type Individual (Type 1)
Name Gregg Steven Zankman
Credential D.O.
Sex Male
Practice address 215 S Power Rd Ste 106, Mesa, AZ, 85206
Phone (480) 214-0051
Fax (480) 214-0055
Enumeration date Nov 14, 2005
Last updated in NPPES Oct 14, 2025
Taxonomy & licenses
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 20A15798 (CA) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 554205 | Other | AZ | AHCCCS ID # |
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.
Frequently asked questions
Is NPI 1558343871 active?
Yes, as of the latest NPPES snapshot, NPI 1558343871 is active (record last updated 2025-10-14).
How do I verify Gregg Zankman's NPI record?
Cross-check NPI 1558343871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-14.