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DR. RALPH JAN KOEK M.D.
NPI 1356428924
Psychiatry & Neurology - Psychiatry in Calabasas, CA

Active since November 01, 2006PECOS Enrolled
91.7/100
CMS Quality Rating
26585 WEST AGOURA BLVD., STE 330, CALABASAS, CA 91301(818) 876-1050 Get Directions Write a Review

NPPES record last updated: October 27, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Ralph Jan Koek M.d. NPPES

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

DR. RALPH JAN KOEK M.D. (NPI 1356428924) is an individual psychiatry provider in Calabasas, California, licensed in California (G058707) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1356428924
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. RALPH JAN KOEKCredential: M.D.
Location Address26585 WEST AGOURA BLVD., STE 330Calabasas, CA 91301
Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631 · (310) 301-8771
Phone(818) 876-1050
Sole ProprietorNo
Enumeration DateNovember 1, 2006
Last NPPES UpdateOctober 27, 2022
NPPES CertifiedOctober 24, 2022
✔ NPI 1356428924 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · G058707
Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

26585 WEST AGOURA BLVD., Calabasas, CA 91301
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Secondary Practice Locations 2

Location 1760 Westwood Plz Ste 58-249CLos Angeles, CA 90024-5055 · Phone (310) 206-2210
Location 216111 Plummer St, (116A-11)North Hills, CA 91343-2036 · Phone (800) 516-4567 ext. 7547 · Fax (818) 895-9588

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ralph Jan Koek M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91301 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

91.7/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.77
Promoting Interoperability100
Improvement Activities40

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 Ralph Koek's NPI number?

The NPI number for Ralph Koek is 1356428924. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Ralph Koek located?

Ralph Koek practices at 26585 West Agoura Blvd. Ste 330, Calabasas, CA 91301. The listed phone number is (818) 876-1050.

What is Ralph Koek's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Ralph Koek enrolled in Medicare?

Yes. Ralph Koek is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Ralph Koek was last updated on October 27, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.