ZACHARY CALO
NPI 1245872548
Psychologist - Clinical in Menlo Park, CA

Q: What is Zachary Calo's NPI number?

The NPI number for Zachary Calo is 1245872548. It was assigned to this individual provider in the NPPES registry on October 8, 2019.

Q: What is Zachary Calo's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: Is Zachary Calo enrolled in Medicare?

No. Zachary Calo has opted out of Medicare through December 16, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Zachary Calo was last updated on November 20, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since October 08, 2019Opted out of Medicare · through Dec 16, 2027

845 EL CAMINO REAL, MENLO PARK, CA 94025(503) 828-7890 Get Directions Write a Review

NPPES record last updated: November 20, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Nov 20, 2025, Oct 8, 2019 (2 updates tracked since 2019).

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About Zachary Calo NPPES

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

ZACHARY CALO (NPI 1245872548) is an individual clinical provider in Menlo Park, California, licensed in California (36311) and active in the NPI registry since October 2019. He has opted out of Medicare through December 16, 2027.

NPPES Registry Identity

NPI1245872548

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameZACHARY CALO

Location Address845 EL CAMINO REALMenlo Park, CA 94025-4807

Mailing Address845 El Camino RealMenlo Park, CA 94025-4807 · (503) 828-7890

Phone(503) 828-7890

Sole ProprietorNo

Enumeration DateOctober 8, 2019

Last NPPES UpdateNovember 20, 20252 updates tracked since enumeration

NPPES CertifiedNovember 20, 2025

✔ NPI 1245872548 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · 36311

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

845 EL CAMINO REAL, Menlo Park, CA 94025

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Zachary Calo 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 December 16, 2025 through December 16, 2027.

Opt-Out Effective DateDecember 16, 2025

Opt-Out In Effect ThroughDecember 16, 2027Opt-out affidavits renew automatically every two years unless cancelled

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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.

JULIA CORCORAN PSY.D.

Psychologist