Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Tammy Ann Heidenthal
Registered Nurse in Mchenry, IL · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1134852544
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Registry record
Entity type Individual (Type 1)
Name Tammy Ann Heidenthal
Sex Female
Practice address 4119 Miller Oaks Dr, Mchenry, IL, 60051
Phone (847) 989-2490
Enumeration date Jul 4, 2022
Last updated in NPPES Jul 4, 2022
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 202327 | Other | IL | 4119 |
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 Tammy Heidenthal's NPI record?
Cross-check NPI 1134852544 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1134852544 active?
Yes, as of the latest NPPES snapshot, NPI 1134852544 is active (record last updated 2022-07-04).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-04.