TIFFANY R WILLIAMS PHD
NPI 1376819045
Psychologist in Nashville, TN

Active since March 28, 2012PECOS Enrolled
4623 TROUSDALE DR, NASHVILLE, TN 37204(615) 301-8431 Get Directions Write a Review

NPPES record last updated: June 12, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 12, 2024, Feb 10, 2020, Feb 7, 2020 (3 updates tracked since 2020).

About Tiffany R Williams Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIFFANY R WILLIAMS PHD (NPI 1376819045) is an individual psychologist in Nashville, Tennessee, licensed in Tennessee (3695) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS and maintains a secondary practice location in Indianapolis.

NPPES Registry Identity

NPI1376819045
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameTIFFANY R WILLIAMSCredential: PHD
Location Address4623 TROUSDALE DRNashville, TN 37204-4584
Mailing Address4623 Trousdale DrNashville, TN 37204-4584 · (615) 301-8431
Sole ProprietorNo
Enumeration DateMarch 28, 2012
Last NPPES UpdateJune 12, 20243 updates tracked since enumeration
NPPES CertifiedJune 12, 2024
✔ NPI 1376819045 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in TN · 3695
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedCounselor · ProfessionalTaxonomy 101YP2500X · License C1000126 (OH)
Also ListedPsychologist · CounselingTaxonomy 103TC1900X · License 07908 (OH), 20043806A (IN)
4623 TROUSDALE DR, Nashville, TN 37204

Secondary Practice Location 1

Location 1355 W 16th St Ste 2800Indianapolis, IN 46202-2279 · Phone (317) 963-7300 · Fax (317) 963-7325

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tiffany R Williams Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Tiffany Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Psychologist
93 BEAUMONT ST
Clarksville, TN 37040
  • Reassigned Medicare billing, Tennessee enrollment
  • 2 clinicians in this Medicare group
General Practice
340 W TENTH ST
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 1,781 clinicians in this Medicare group
General Practice
1701 N SENATE BLVD
Indianapolis, IN 46202
  • Reassigned Medicare billing, Indiana enrollment
  • 5,212 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Social Worker (Clinical)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Professional)
4623 TROUSDALE DR
NASHVILLE, TN 37204
Counselor (Mental Health)
4623 TROUSDALE DR
NASHVILLE, TN 37204

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tiffany Williams's NPI number?

The NPI number for Tiffany Williams is 1376819045. It was assigned to this individual provider in the NPPES registry on March 28, 2012.

Where is Tiffany Williams located?

Tiffany Williams practices at 4623 Trousdale Dr, Nashville, TN 37204. The listed phone number is (615) 301-8431.

What is Tiffany Williams's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Tiffany Williams enrolled in Medicare?

Yes. Tiffany Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Tiffany Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tiffany Williams reassigns Medicare benefits to 3 organizations: Imani Behavioral Health, PLLC (Clarksville, TN), Indiana University Health Care Associates, Inc (Indianapolis, IN) and Iu Health Medical Group, LLC (Indianapolis, IN). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Tiffany Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tiffany Williams accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource and Cigna Healthcare list Tiffany Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tiffany Williams was last updated on June 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.