Doctor profile · Federal record
Dr. Mark St. John, LCSW, CAP
Clinical Social Worker · Boynton Beach, FL
- NPI 1821487315
- Accepts Medicare
- 16 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3652 S Seacrest Blvd
Boynton Beach, FL 334358662
(561) 336-3220
Credentials & registration
- NPI registered
- January 2015 — 11 yrs on file
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 1041C0700X — NUCC code
- State license (1)
- Florida #SW12046
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821487315. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
190
Distinct HCPCS
1
Medicare allowed
$20,666
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90837 |
Psychotherapy, 1 hour | 190 | 14 | $109 |
In context: peer comparison
Among 7 peers in this city , average services per provider: 222. This provider delivers 0.9× the peer median.Frequently asked questions
What is Dr. Mark St. John's medical specialty?
Dr. Mark St. John practices Clinical Social Worker in Boynton Beach, FL.
Where does Dr. Mark St. John practice?
Dr. Mark St. John practices at 3652 S Seacrest Blvd, Boynton Beach, FL 334358662. Office phone: 5613363220.
What is Dr. Mark St. John's NPI?
Dr. Mark St. John's National Provider Identifier (NPI) is 1821487315, issued by NPPES.
Does Dr. Mark St. John accept Medicare assignment?
Yes. Dr. Mark St. John accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark St. John commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837). Source: CMS Medicare Physician & Other Practitioners file.