Stephanie Williams, PH.D., L.P.
NPI 1306886270 · Clinical Psychologist · Ferndale, MI
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Williams, PH.D., L.P. is a Clinical Psychologist provider in Ferndale, MI (NPI 1306886270).
Provider details
- NPI number
- 1306886270
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D., L.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 6301014015 (MI)
Specialties & taxonomies
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
731 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) |
|---|---|---|
| Psychotherapy, 1 Hour90837 | 577 | $136 |
| Psychotherapy, 45 Minutes90834 | 154 | $90 |
Typical Medicare-allowed amounts for these services range $90–$136 (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 (1)
- 39319 Plymouth Rd Ste 2Livonia, MI 48150-1059Phone: (248) 259-1991
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2021-09-13
- Certified
- 2021-09-13
Frequently asked questions
- What is Stephanie Williams's NPI number?
- Stephanie Williams's National Provider Identifier (NPI) is 1306886270, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Williams's specialty?
- Stephanie Williams is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephanie Williams located?
- Stephanie Williams's practice location on file with NPPES is 901 Livernois St, Ferndale, MI 48220-2319.
- What is Stephanie Williams's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Williams is (248) 259-1991.
- Does Stephanie Williams accept Medicare?
- Stephanie Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Williams's NPI active?
- Yes — Stephanie Williams's NPI (1306886270) is active in the NPPES registry as of the last update on 2021-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.