Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joseph E Oesterling, MD
Specialist in Saginaw, MI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1538136353
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Registry record
Entity type Individual (Type 1)
Name Joseph E Oesterling
Credential MD
Sex Male
Practice address 1740 Midland Rd, Saginaw, MI, 48638
Phone (989) 799-4840
Fax (989) 799-4994
Enumeration date Mar 1, 2006
Last updated in NPPES Dec 15, 2011
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 |
|---|---|---|---|
| 3439412 | 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
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Joseph Oesterling?
Joseph Oesterling is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Laura Hintz Nurse Practitioner · Saginaw, MI NPI 1528035342 Midwest Prostate & Urological Institute Urology Physician · Saginaw, MI NPI 1508834755 Michigan Prostate and Urological Institute, P.C. Urology Physician · Saginaw, MI NPI 1487183828 Katelyn Ellison Behavior Technician · Saginaw, MI NPI 1114438777
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-15.