Doctor profile · Federal record
Dr. Gregory Berlin, PH.D.
Psychologist · Greenwich, CT
- NPI 1720650211
- MIPS 70.2 / 100 · 2023
- 5 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
55 Holly Hill Ln
Greenwich, CT 068306074
(203) 863-2939
Credentials & registration
- NPI registered
- July 2021 — 5 yrs on file
- Profile last updated
- October 8, 2021
- Specialty taxonomy
- 103T00000X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1720650211. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
41
Distinct HCPCS
2
Medicare allowed
$4,591
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90834 |
Psychotherapy, 45 minutes | 27 | 11 | $90 | |
90791 |
Psychiatric diagnostic evaluation | 14 | 14 | $154 |
In context: peer comparison
Among 1 peers in Greenwich Psychologist, average services per provider: 20. This provider delivers 2.1× the peer median.Frequently asked questions
What is Dr. Gregory Berlin's medical specialty?
Dr. Gregory Berlin practices Psychologist in Greenwich, CT.
Where does Dr. Gregory Berlin practice?
Dr. Gregory Berlin practices at 55 Holly Hill Ln, Greenwich, CT 068306074. Office phone: 2038632939.
What is Dr. Gregory Berlin's NPI?
Dr. Gregory Berlin's National Provider Identifier (NPI) is 1720650211, issued by NPPES.
What procedures does Dr. Gregory Berlin commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90834); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.