Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Alexander Michael Ralston, PA-C
Physician Assistant in Flint, MI · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639691256
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Registry record
Entity type Individual (Type 1)
Name Mr. Alexander Michael Ralston
Credential PA-C
Sex Male
Practice address 4466 W Bristol Rd, Flint, MI, 48507
Phone (810) 733-1200
Fax (810) 733-0688
Enumeration date Jul 14, 2017
Last updated in NPPES Mar 29, 2018
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601008297 (MI) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1639691256 | Medicaid | MI | - |
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
How do I verify Alexander Ralston's NPI record?
Cross-check NPI 1639691256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1639691256 active?
Yes, as of the latest NPPES snapshot, NPI 1639691256 is active (record last updated 2018-03-29).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-29.