Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. William A Hartman, M.D.
Specialist in Hilo, HI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225112469
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Registry record
Entity type Individual (Type 1)
Name Dr. William A Hartman
Credential M.D.
Sex Male
Practice address 134 Puuhonu Way, Hilo, HI, 96720
Phone (808) 935-1956
Fax (808) 935-7657
Enumeration date Oct 24, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 |
|---|---|---|---|
| 03725601 | Medicaid | HI | - |
| B4103-4 | Other | HI | HMSA |
| 198055 | Other | HI | HMA |
| P00021850 | Other | HI | RAIL ROAD MEDICARE |
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 1225112469 active?
Yes, as of the latest NPPES snapshot, NPI 1225112469 is active (record last updated 2007-07-08).
How do I verify William Hartman's NPI record?
Cross-check NPI 1225112469 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 → Gastroenterology Associates, Inc Specialist · Hilo, HI NPI 1831202787 Edwin Montell Specialist · Hilo, HI NPI 1700998432 Timothy Jahraus Gastroenterology Physician · Hilo, HI NPI 1023192275 The Endoscopy Center, LLC Ambulatory Surgical Clinic/Center · Hilo, HI NPI 1659444131 Russ Arjal Gastroenterology Physician · Hilo, HI NPI 1821144403 Pacific Endoscopy Center LLC Ambulatory Surgical Clinic/Center · Hilo, HI NPI 1417377649
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.