Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. TATIA T WILLIAMS PSYD
NPI 1639616196
Psychologist in Powell, OH

Active since January 23, 2017PECOS EnrolledAccepts Medicare Assignment
7171 SAWMILL PKWY STE 2B, POWELL, OH 43065(614) 293-4969(614) 293-6111 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 5, 2026, May 8, 2024, Jun 20, 2023 and 3 more (6 updates tracked since 2017).

About Dr. Tatia T Williams Psyd NPPES

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

DR. TATIA T WILLIAMS PSYD (NPI 1639616196) is an individual psychologist in Powell, Ohio, licensed in Ohio (P.7538) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Newark, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1639616196
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. TATIA T WILLIAMSCredential: PSYD
Location Address7171 SAWMILL PKWY STE 2BPowell, OH 43065-7828
Mailing Address700 Ackerman Rd Ste 2120Columbus, OH 43202-1559 · (614) 293-4969 · Fax (614) 293-6111
Fax(614) 293-6111
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateJanuary 23, 2017
Last NPPES UpdateAugust 5, 20266 updates tracked since enumeration
NPPES CertifiedAugust 5, 2026
NPI 1639616196 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in OH · P.7538
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 E.1100254-SUPV (OH)
7171 SAWMILL PKWY STE 2B, Powell, OH 43065

Secondary Practice Location 1

Location 168 W Church St Ste 318Newark, OH 43055-5050 · Phone (740) 417-9265 · Fax (740) 417-9268

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Tatia T Williams Psyd is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305121203
PECOS Enrollment IDI20170315002082
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.

Other Providers at the Same Location NPPES

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

Psychologist
7171 SAWMILL PKWY STE 2B
POWELL, OH 43065

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 Tatia Williams's NPI number?

The NPI number for Tatia Williams is 1639616196. It was assigned to this individual provider in the NPPES registry on January 23, 2017.

Where is Tatia Williams located?

Tatia Williams practices at 7171 Sawmill Pkwy Ste 2B, Powell, OH 43065. The listed phone number is (614) 293-4969.

What is Tatia Williams's specialty?

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

Is Tatia Williams enrolled in Medicare?

Yes. Tatia Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Tatia Williams accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource, MedMutual and Molina Healthcare list Tatia 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 Tatia Williams was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days 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.