Tracy Williams, PH,D., BCBA
NPI 1114180064 · Cognitive & Behavioral Psychologist · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tracy Williams, PH,D., BCBA is a Cognitive & Behavioral Psychologist provider in Sioux Falls, SD (NPI 1114180064).
Provider details
- NPI number
- 1114180064
- Entity type
- Individual
- Primary specialty
- Cognitive & Behavioral PsychologistBehavioral Health & Social Service Providers
- Credential
- PH,D., BCBA
- Sex
- Female
- Sole proprietor
- No
- License
- 1-03-1438 (SD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,047 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Group Psychotherapy90853 | 755 | $27 |
| Psychotherapy, 30 Minutes90832 | 180 | $76 |
| Psychotherapy, 1 Hour90837 | 76 | $147 |
| Psychotherapy, 45 Minutes90834 | 36 | $100 |
Typical Medicare-allowed amounts for these services range $27–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (6)
- 745 10th St Ste CRock Valley, IA 51247-1511Phone: (605) 271-2690
- 735 3rd St SwPerham, MN 56573-1152Phone: (605) 271-2690
- 3721 23rd St S Ste 201Saint Cloud, MN 56301-6199Phone: (605) 271-2690
- 405 S Washington StAberdeen, SD 57401-4348Phone: (605) 271-2690
- 620 N Lawler StMitchell, SD 57301-2639Phone: (605) 271-2690
- 1704 Westland RdCheyenne, WY 82001-3322Phone: (605) 271-2690
Registry dates
- Enumerated
- 2008-07-09
- Last updated
- 2021-07-22
- Certified
- 2021-07-22
Frequently asked questions
- What is Tracy Williams's NPI number?
- Tracy Williams's National Provider Identifier (NPI) is 1114180064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tracy Williams's specialty?
- Tracy Williams is listed in the NPPES registry with a primary specialty of Cognitive & Behavioral Psychologist (Behavioral Health & Social Service Providers).
- Where is Tracy Williams located?
- Tracy Williams's practice location on file with NPPES is 1105 W Russell Street, Sioux Falls, SD 57104.
- What is Tracy Williams's phone number?
- The practice phone number listed in the NPPES registry for Tracy Williams is (605) 271-2690.
- Does Tracy Williams accept Medicare?
- Tracy Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tracy Williams's NPI active?
- Yes — Tracy Williams's NPI (1114180064) is active in the NPPES registry as of the last update on 2021-07-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.