FARRELL PSYCHOLOGICAL SERVICES, PLLC
FARRELL PSYCHOLOGICAL SERVICES, PLLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1952775934, based in Port Jefferson, NY. The organization lists 13 taxonomy classifications, with Psychologist recorded as primary.
Getting there
The practice address on file is 646 MAIN ST, Port Jefferson, NY 11777. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 017980 | NY | Psychologist primary |
| 017980 | NY | Addiction (Substance Use Disorder)… |
| 017980 | NY | Adult Development & Aging Psychologist |
| 017980 | NY | Cognitive & Behavioral Psychologist |
| 017980 | NY | Clinical Psychologist |
| 017980 | NY | Counseling Psychologist |
| 017980 | NY | Clinical Child & Adolescent Psychologist |
| 017980 | NY | Family Psychologist |
| 017980 | NY | Health Psychologist |
| 017980 | NY | Intellectual & Developmental Disabilities… |
| 017980 | NY | Group Psychotherapy Psychologist |
| 017980 | NY | Rehabilitation Psychologist |
| 017980 | NY | School Psychologist |
This provider holds licence 017980 issued in NY. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 3779974662
- Enrollment ID
- O20220104001100
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Psychologist covers
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. NUCC Health Care Provider Taxonomy, code 103T00000X
All registered taxonomy codes
This provider registers 13 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 103T00000X | Psychologist | 017980 | NY | primary |
| 103TA0400X | Addiction (Substance Use Disorder) Psychologist Addiction (Substance Use Disorder) | 017980 | NY | |
| 103TA0700X | Adult Development & Aging Psychologist Adult Development & Aging | 017980 | NY | |
| 103TB0200X | Cognitive & Behavioral Psychologist Cognitive & Behavioral | 017980 | NY | |
| 103TC0700X | Clinical Psychologist Clinical | 017980 | NY | |
| 103TC1900X | Counseling Psychologist Counseling | 017980 | NY | |
| 103TC2200X | Clinical Child & Adolescent Psychologist Clinical Child & Adolescent | 017980 | NY | |
| 103TF0000X | Family Psychologist Family | 017980 | NY | |
| 103TH0004X | Health Psychologist Health | 017980 | NY | |
| 103TM1800X | Intellectual & Developmental Disabilities Psychologist Intellectual & Developmental Disabilities | 017980 | NY | |
| 103TP2701X | Group Psychotherapy Psychologist Group Psychotherapy | 017980 | NY | |
| 103TR0400X | Rehabilitation Psychologist Rehabilitation | 017980 | NY | |
| 103TS0200X | School Psychologist School | 017980 | NY |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1952775934 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Nov 13, 2015 |
| Last updated | Nov 13, 2015 |
| Status | Active |
| Practice address |
646 MAIN ST Port Jefferson, NY 11777 (631) 901-7777 |
| Mailing address |
105 LEEWARD LN Port Jefferson, NY 11777 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 9 | 5 | 2 | 7 | 7 | 5 | 9 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 1 | 2 | 5 | 7 | 1 | 9 | 6 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.