DR. LISA SOMMER MERRIN PH.D.
NPI 1699825711
Psychologist in Tempe, AZ

Active since January 11, 2007Opted out of Medicare · through Aug 3, 2027
500 W GUADALUPE RD, TEMPE, AZ 85283(480) 838-3200 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Dr. Lisa Sommer Merrin Ph.d. NPPES

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

DR. LISA SOMMER MERRIN PH.D. (NPI 1699825711) is an individual psychologist in Tempe, Arizona, licensed in Arizona (3253) and active in the NPI registry since January 2007. She has opted out of Medicare through August 3, 2027.

NPPES Registry Identity

NPI1699825711
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. LISA SOMMER MERRINCredential: PH.D.
Location Address500 W GUADALUPE RDTempe, AZ 85283-3599
Mailing Address6704 S Terrace RdTempe, AZ 85283-4006 · (480) 215-0424
Sole ProprietorNo
Enumeration DateJanuary 11, 2007
Last NPPES UpdateJuly 8, 2007
NPI 1699825711 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 AZ · 3253
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.
500 W GUADALUPE RD, Tempe, AZ 85283

Other Names 1

Former Name (1)Dr. Lisa Merrin Williams Ph.d.

Other Identifiers 1

Other569858AZ · Ahcccs Provider Number

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Opted out of Medicare

Dr. Lisa Sommer Merrin 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 August 3, 2023 through August 3, 2027.

Opt-Out Effective DateAugust 3, 2023
Opt-Out In Effect ThroughAugust 3, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 12

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

Registered Nurse (School)
500 W GUADALUPE RD
TEMPE, AZ 85283
Psychologist (School)
500 W GUADALUPE RD
TEMPE, AZ 85283
Registered Nurse (School)
500 W GUADALUPE RD
TEMPE, AZ 85283
Local Education Agency (LEA)
500 W GUADALUPE RD
TEMPE, AZ 85283
Social Worker
500 W GUADALUPE RD
TEMPE, AZ 85283
Counselor (Mental Health)
500 W GUADALUPE RD
TEMPE, AZ 85283
Social Worker (Clinical)
500 W GUADALUPE RD
TEMPE, AZ 85283
Clinic/Center (Student Health)
500 W GUADALUPE RD
TEMPE, AZ 85283

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 Lisa Merrin's NPI number?

The NPI number for Lisa Merrin is 1699825711. It was assigned to this individual provider in the NPPES registry on January 11, 2007. The provider is also known as Dr. Lisa Merrin Williams Ph.D..

Where is Lisa Merrin located?

Lisa Merrin practices at 500 W Guadalupe Rd, Tempe, AZ 85283. The listed phone number is (480) 838-3200.

What is Lisa Merrin's specialty?

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

Is Lisa Merrin enrolled in Medicare?

No. Lisa Merrin has opted out of Medicare through August 3, 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 Lisa Merrin was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.