Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. James R Posthumus, PHARM.D
Pharmacist in Portage, MI · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1104193234
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Registry record
Entity type Individual (Type 1)
Name Dr. James R Posthumus
Credential PHARM.D
Sex Male
Practice address 5933 S Westnedge Ave, Portage, MI, 49002
Phone (269) 381-4862
Fax (269) 381-4943
Enumeration date Nov 17, 2011
Last updated in NPPES Feb 18, 2013
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 139054 | Other | MI | NAPB |
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 James Posthumus?
The National Provider Identifier (NPI) for James Posthumus is 1104193234, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Posthumus practice?
The practice location on file with NPPES is in Portage, MI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Walgreen Co Pharmacy · Portage, MI NPI 1699897835 Sarah Gilbert Pharmacist · Portage, MI NPI 1972888014 Patricia Byrne Pharmacist · Portage, MI NPI 1649547738 Mary Kalaiarasi Manuvel Pharmacist · Portage, MI NPI 1194109967 Walgreens Community/Retail Pharmacy · Portage, MI NPI 1588048672 Sabbir Miah Pharmacist · Portage, MI NPI 1073131017 Lindsey Gerstler Pharmacist · Portage, MI NPI 1477164218 Samuel Lehouiller Pharmacist · Portage, MI NPI 1962125435
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-18.