Doctor profile · Federal record
Dr. Cynthia Williams, LCSW
Professional Counselor (CMS: Clinical Social Worker) · O Fallon, MO
- NPI 1528672383
- Accepts Medicare
- 11 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
801 Woodlawn Ave Ste 15
O Fallon, MO 633667647
(636) 379-1779
fax (636) 634-3496
Credentials & registration
- NPI registered
- August 2020 — 6 yrs on file
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 101YP2500X — NUCC code
- State license (1)
- Missouri #2016042364
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1528672383. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
685
Distinct HCPCS
3
Medicare allowed
$71,889
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90837 |
Psychotherapy, 1 hour | 613 | 43 | $107 | |
90834 |
Psychotherapy, 45 minutes | 44 | 11 | $67 | |
90791 |
Psychiatric diagnostic evaluation | 28 | 28 | $128 |
In context: peer comparison
Among 1 peers in O Fallon Professional Counselor, average services per provider: 228. This provider delivers 3.0× the peer median.Frequently asked questions
What is Dr. Cynthia Williams's medical specialty?
Dr. Cynthia Williams practices Professional Counselor in O Fallon, MO.
Where does Dr. Cynthia Williams practice?
Dr. Cynthia Williams practices at 801 Woodlawn Ave Ste 15, O Fallon, MO 633667647. Office phone: 6363791779.
What is Dr. Cynthia Williams's NPI?
Dr. Cynthia Williams's National Provider Identifier (NPI) is 1528672383, issued by NPPES.
Does Dr. Cynthia Williams accept Medicare assignment?
Yes. Dr. Cynthia Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Cynthia Williams commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Psychotherapy (HCPCS 90834); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.