NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Theresa Alice Geissler, APRN

Family Nurse Practitioner in Knoxville, TN · enumerated 2021 · practices at High Risk Obstetrical Consultants, Pllc.

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

National Provider Identifier

1598349573

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Theresa Alice Geissler
Credential APRN
Sex Female
Practice address 1930 Alcoa Hwy Ste A435, Knoxville, TN, 37920
Fax (865) 263-2441
Enumeration date May 6, 2021
Last updated in NPPES Oct 2, 2024

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN0000177216 (TN) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 26856 (TN) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License APN0000026856 (TN) 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

Where does Theresa Geissler practice?
The practice location on file with NPPES is in Knoxville, TN. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Theresa Geissler?
The National Provider Identifier (NPI) for Theresa Geissler is 1598349573, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-02.