GREGORY BERLIN PH.D.
NPI 1720650211
Psychologist in Greenwich, CT

Active since July 14, 2021Opted out of Medicare · through Jul 1, 2027
70.22/100
CMS Quality Rating
55 HOLLY HILL LN, GREENWICH, CT 06830(203) 863-2939 Get Directions Write a Review

NPPES record last updated: October 8, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Oct 8, 2021, Jul 14, 2021 (2 updates tracked since 2021).

About Gregory Berlin Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY BERLIN PH.D. (NPI 1720650211) is an individual psychologist in Greenwich, Connecticut and active in the NPI registry since July 2021. He has opted out of Medicare through July 1, 2027.

NPPES Registry Identity

NPI1720650211
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameGREGORY BERLINCredential: PH.D.
Location Address55 HOLLY HILL LNGreenwich, CT 06830-6074
Mailing Address55 Holly Hill LnGreenwich, CT 06830-6074 · (203) 863-2939
Sole ProprietorYes
Enumeration DateJuly 14, 2021
Last NPPES UpdateOctober 8, 20212 updates tracked since enumeration
NPPES CertifiedOctober 8, 2021
NPI 1720650211 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
55 HOLLY HILL LN, Greenwich, CT 06830

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Gregory Berlin Ph.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from July 1, 2025 through July 1, 2027.

Opt-Out Effective DateJuly 1, 2025
Opt-Out In Effect ThroughJuly 1, 2027Opt-out affidavits renew automatically every two years unless cancelled

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
19 services11 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
14 services14 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

70.22/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality94.44
Promoting Interoperability73
Improvement Activities40
Cost28.81

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Clinical Cardiac Electrophysiology)
55 HOLLY HILL LN, SUITE 240
GREENWICH, CT 06830
Physician Assistant (Surgical)
55 HOLLY HILL LN, 110
GREENWICH, CT 06830
Dietitian, Registered
55 HOLLY HILL LN
GREENWICH, CT 06830
Nurse Practitioner
55 HOLLY HILL LN
GREENWICH, CT 06830
Internal Medicine (Endocrinology, Diabetes & Metabolism)
55 HOLLY HILL LN
GREENWICH, CT 06830
General Acute Care Hospital
55 HOLLY HILL LN
GREENWICH, CT 06830
Internal Medicine (Cardiovascular Disease)
55 HOLLY HILL LN, SUITE 240
GREENWICH, CT 06830
Obstetrics & Gynecology
55 HOLLY HILL LN, SUITE 130
GREENWICH, CT 06830

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Berlin's NPI number?

The NPI number for Gregory Berlin is 1720650211. It was assigned to this individual provider in the NPPES registry on July 14, 2021.

Where is Gregory Berlin located?

Gregory Berlin practices at 55 Holly Hill Ln, Greenwich, CT 06830. The listed phone number is (203) 863-2939.

What is Gregory Berlin's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Gregory Berlin enrolled in Medicare?

No. Gregory Berlin has opted out of Medicare through July 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Gregory Berlin was last updated on October 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.