Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ulf R Hierlwimmer, DO
Allergy Physician in Holland, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508830894
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Registry record
Entity type Individual (Type 1)
Name Ulf R Hierlwimmer
Credential DO
Sex Male
Practice address 904 Washington Ave Ste 120, Holland, MI, 49423
Phone (616) 392-8877
Fax (616) 392-1755
Enumeration date Feb 14, 2006
Last updated in NPPES Dec 23, 2019
Taxonomy & licenses
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 |
|---|---|---|---|
| 111435568 | 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
What is the NPI number for Ulf Hierlwimmer?
The National Provider Identifier (NPI) for Ulf Hierlwimmer is 1508830894, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ulf Hierlwimmer practice?
The practice location on file with NPPES is in Holland, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-23.