Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Caroline Fieber, MD
Cytopathology Physician in Enid, OK · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1043299258
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Caroline Fieber
Credential MD
Sex Female
Practice address 2609 N. Van Buren, Enid, OK, 73703
Phone (580) 237-0171
Fax (580) 237-0412
Enumeration date Jan 16, 2006
Last updated in NPPES Apr 2, 2012
Taxonomy & licenses
207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 24212 (OK) Secondary
207ZC0500X Cytopathology Physician Allopathic & Osteopathic Physicians · License 24212 (OK) Secondary
207ZC0500X Cytopathology Physician Allopathic & Osteopathic Physicians · License G62349 (CA) Primary
207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License G62349 (CA) Secondary
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 |
|---|---|---|---|
| 200050450A | Medicaid | OK | - |
| LAB44024F | Medicaid | CA | - |
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 Mary Fieber?
The National Provider Identifier (NPI) for Mary Fieber is 1043299258, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Fieber practice?
The practice location on file with NPPES is in Enid, OK. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-02.