Doctor profile · Federal record
Dr. Gwyn Sondike
Clinical Social Worker · Addiction (Substance Use Disorder) Counselor · Behavioral Analyst · Mendham, NJ
- NPI 1679901029
- Accepts Medicare
- 15 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
80 W Main St
Mendham, NJ 079451257
(973) 543-5656
fax (973) 543-1361
Credentials & registration
- NPI registered
- October 2013 — 13 yrs on file
- Profile last updated
- May 25, 2023
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 1041C0700X — NUCC code
- State licenses (2)
- New Jersey #44SC05688800 · New Jersey #37LC00252400
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1679901029. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
192
Distinct HCPCS
1
Medicare allowed
$14,978
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90834 |
Psychotherapy, 45 minutes | 192 | 17 | $78 |
In context: peer comparison
Among 1 peers in Mendham Clinical Social Worker, average services per provider: 192. This provider delivers 1.0× the peer median.Frequently asked questions
What is Dr. Gwyn Sondike's medical specialty?
Dr. Gwyn Sondike practices Clinical Social Worker in Mendham, NJ.
Where does Dr. Gwyn Sondike practice?
Dr. Gwyn Sondike practices at 80 W Main St, Mendham, NJ 079451257. Office phone: 9735435656.
What is Dr. Gwyn Sondike's NPI?
Dr. Gwyn Sondike's National Provider Identifier (NPI) is 1679901029, issued by NPPES.
Does Dr. Gwyn Sondike accept Medicare assignment?
Yes. Dr. Gwyn Sondike accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gwyn Sondike commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.