DR. MARTHA BREWER KOO M.D.
NPI 1497899728
Psychiatry & Neurology - Psychiatry in Hermosa Beach, CA

Q: What is Martha Koo's NPI number?

The NPI number for Martha Koo is 1497899728. It was assigned to this individual provider in the NPPES registry on February 19, 2007.

Q: What is Martha Koo's specialty?

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

Q: Is Martha Koo enrolled in Medicare?

No. Martha Koo has opted out of Medicare through November 2, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Q: When was this NPI record last updated?

The NPPES record for Martha Koo was last updated on June 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since February 19, 2007Opted out of Medicare · through Nov 2, 2027

2615 PACIFIC COAST HWY, #215, HERMOSA BEACH, CA 90254(310) 318-2566 Get Directions Write a Review

NPPES record last updated: June 23, 2022. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Martha Brewer Koo M.d. NPPES

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

DR. MARTHA BREWER KOO M.D. (NPI 1497899728) is an individual psychiatry provider in Hermosa Beach, California, licensed in California (G78080) and active in the NPI registry since February 2007. She has opted out of Medicare through November 2, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1497899728

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameDR. MARTHA BREWER KOOCredential: M.D.

Location Address2615 PACIFIC COAST HWY, #215Hermosa Beach, CA 90254-2225

Mailing Address515 Larsson StManhattan Beach, CA 90266-6734 · (310) 318-2566 · Fax (310) 318-5566

Phone(310) 318-2566

Sole ProprietorYes

Enumeration DateFebruary 19, 2007

Last NPPES UpdateJune 23, 2022

NPPES CertifiedJune 23, 2022

✔ NPI 1497899728 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · G78080

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.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License G78080 (CA)

2615 PACIFIC COAST HWY, Hermosa Beach, CA 90254

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

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. Martha Brewer Koo M.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 November 2, 2017 through November 2, 2027.

Opt-Out Effective DateNovember 2, 2017

Opt-Out In Effect ThroughNovember 2, 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90254 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.

Other Providers at the Same Location NPPES 13

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

KYLE WHITE BCABA

Behavior Analyst

2615 PACIFIC COAST HWY
HERMOSA BEACH, CA 90254

Los Angeles County (833) 223-2326

CIENNA ALYSSE PALOS

Marriage & Family Therapist

2615 PACIFIC COAST HWY
HERMOSA BEACH, CA 90254

Los Angeles County (424) 262-2935

DR. LISA DEANNE WALDMAN PH.D.

Clinical Neuropsychologist

2615 PACIFIC COAST HWY, SUITE 325
HERMOSA BEACH, CA 90254

Los Angeles County (310) 528-5550

DR. PATRICIA BALTAZAR PHD

Psychologist (Clinical)

2615 PACIFIC COAST HWY, SUITE 204
HERMOSA BEACH, CA 90254

Los Angeles County (310) 784-5993

OPTIMIZED PSYCHIATRY A PROFESSIONAL NURSING CORPORATION

Nurse Practitioner (Psychiatric/Mental Health)

2615 PACIFIC COAST HWY
HERMOSA BEACH, CA 90254

Los Angeles County (310) 598-6850

MARTHA B. KOO, M.D., LTD.

Clinic/Center (Adult Mental Health)

2615 PACIFIC COAST HWY, 215
HERMOSA BEACH, CA 90254

Los Angeles County (310) 318-2566

CATHERINE LINNEA CHAMBLISS MFT

Marriage & Family Therapist

2615 PACIFIC COAST HWY, #325
HERMOSA BEACH, CA 90254

Los Angeles County (310) 303-9132

BEACH CITIES PSYCHOLOGICAL SERVICES, INC.

Psychologist (Clinical)

2615 PACIFIC COAST HWY, SUITE 325
HERMOSA BEACH, CA 90254

Los Angeles County (310) 746-5929

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 Martha Koo's NPI number?

The NPI number for Martha Koo is 1497899728. It was assigned to this individual provider in the NPPES registry on February 19, 2007.

Where is Martha Koo located?

Martha Koo practices at 2615 Pacific Coast Hwy #215, Hermosa Beach, CA 90254. The listed phone number is (310) 318-2566.

What is Martha Koo's specialty?

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

Is Martha Koo enrolled in Medicare?

No. Martha Koo has opted out of Medicare through November 2, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

What insurance does Martha Koo accept?

Health plans from Providence Health Plan list Martha Koo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Martha Koo was last updated on June 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.