RUBENZAHL, KNUDSEN & ASSOCIATES PSYCH., SRVCS, P.C.
NPI 1578552170
Psychologist in Watertown, NY

Active since October 17, 2005
22670 SUMMIT DRIVE, SUITE 2, WATERTOWN, NY 13601(315) 788-3332(315) 788-4584 Get Directions Write a Review

NPPES record last updated: September 26, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Rubenzahl, Knudsen & Associates Psych., Srvcs, P.c. NPPES

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

RUBENZAHL, KNUDSEN & ASSOCIATES PSYCH., SRVCS, P.C. (NPI 1578552170) is a healthcare organization registered as a psychologist in Watertown, New York and active in the NPI registry since October 2005. The organization lists Thomas E. Knudsen, Owner, as its authorized official.

NPPES Registry Identity

NPI1578552170
Entity TypeOrganization
Primary Taxonomy103T00000X
Legal Business NameRUBENZAHL, KNUDSEN & ASSOCIATES PSYCH., SRVCS, P.C.
Location Address22670 SUMMIT DRIVE, SUITE 2Watertown, NY 13601
Mailing Address22670 Summit Drive, Suite 2Watertown, NY 13601 · (315) 788-3332 · Fax (315) 788-4584
Fax(315) 788-4584
Organization SubpartNo
Authorized OfficialThomas E. KnudsenOwner · (315) 788-3332
Enumeration DateOctober 17, 2005
Last NPPES UpdateSeptember 26, 2014
✔ NPI 1578552170 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in NY · 009513
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.
22670 SUMMIT DRIVE, Watertown, NY 13601

Other Identifiers 2

Medicare UPINR5940
Medicare ID-Type UnspecifiedDA53558B

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rubenzahl, Knudsen & Associates Psych., Srvcs, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C., which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Clinical Psychologist
NPI 1841256716
531 WASHINGTON ST 2ND FLOOR
Watertown, NY 13601
(315) 788-3332
✔ PECOS✔ Accepts Medicare1.6 mi
Clinical Social Worker
NPI 1073062378
25706 HINDS RD
Watertown, NY 13601
(315) 782-5191
✔ PECOS✔ Accepts Medicare6.6 mi
Clinical Psychologist
NPI 1770539454
7550 S STATE ST LEWIS COUNTY COMMUNITY MENTAL HEALTH CENTER
Lowville, NY 13367
(315) 376-5450
✔ PECOS✔ Accepts Medicare24 mi
Clinical Psychologist
NPI 1902152465
20905 PROFESSIONAL PLZ SUITE 220
Ashburn, VA 20147
(703) 858-9841
✔ PECOS349 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C.'s NPI number?

The NPI number for Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. is 1578552170. It was assigned to this organization in the NPPES registry on October 17, 2005.

Where is Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. located?

Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. is located at 22670 Summit Drive Suite 2, Watertown, NY 13601. The listed phone number is (315) 788-3332.

What is Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C.'s specialty?

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

Is Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. enrolled in Medicare?

Yes. Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Clinical Psychologist (3) and Clinical Social Worker (1). Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Rubenzahl, Knudsen & Associates Psych., Srvcs, P.C. was last updated on September 26, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.