Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Fred Michael Ruefer, MD
Specialist in Muskogee, OK · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174528806
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Registry record
Entity type Individual (Type 1)
Name Fred Michael Ruefer
Credential MD
Sex Male
Practice address 209 S 36th St, Muskogee, OK, 74401
Phone (918) 682-7717
Fax (918) 682-9434
Enumeration date Jun 17, 2005
Last updated in NPPES Aug 23, 2010
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 |
|---|---|---|---|
| 100176280A | Medicaid | OK | - |
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 specialty is Fred Ruefer?
Fred Ruefer 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.
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.
Other providers at this practice address
Browse all → Jack Weaver Interventional Pain Medicine Physician · Muskogee, OK NPI 1902802101 Dennis Rivero Orthopaedic Surgery Physician · Muskogee, OK NPI 1619982188 Jennifer Miller Athletic Trainer · Muskogee, OK NPI 1548479942 Fred M Ruefer, MD PC Specialist · Muskogee, OK NPI 1518161249 Board of Regents of the University of Oklahoma Ou Physicians Tulsa Orthopaedic Surgery Physician · Muskogee, OK NPI 1184947236 Guy E. Grooms, M.D., P.C. Specialist · Muskogee, OK NPI 1568777043 Jack E Weaver, MD PC Sports Medicine (Internal Medicine) Physician · Muskogee, OK NPI 1841508918 Muskogee Bone & Joint & Sports Medicine Specialist · Muskogee, OK NPI 1700175155
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-23.