Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Onissa Sharan Mitchell-Fisher, MSN, APRN, FNP-C

Nurse Practitioner in Tyler, TX · enumerated 2013.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1255752432

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Registry record

Entity type Individual (Type 1)

Name Onissa Sharan Mitchell-Fisher

Credential MSN, APRN, FNP-C

Sex Female

Practice address 409 W Ferguson St, Tyler, TX, 75702

Phone (903) 596-8353

Enumeration date Dec 14, 2013

Last updated in NPPES Mar 3, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP124869 (TX) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Onissa Mitchell-Fisher?

The National Provider Identifier (NPI) for Onissa Mitchell-Fisher is 1255752432, a Type 1 (individual) record in the CMS NPPES registry.

Where does Onissa Mitchell-Fisher practice?

The practice location on file with NPPES is in Tyler, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Jeffrey Jackson Endocrinology, Diabetes & Metabolism Physician · Tyler, TX NPI 1972563443 Mary Skeels Psychiatric/Mental Health Clinical Nurse Specialist · Tyler, TX NPI 1740365527 John English Family Medicine Physician · Tyler, TX NPI 1538212881 Kendra Hoyle Family Medicine Physician · Tyler, TX NPI 1518011642 Tiffany Adams Family Nurse Practitioner · Tyler, TX NPI 1396187951 Lianne Sanchez Gynecology Physician · Tyler, TX NPI 1790161131 James Humphries Family Medicine Physician · Tyler, TX NPI 1477913036 Jony Palaparthi Dentist · Tyler, TX NPI 1629532510

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-03.