DR. KAREN YEN QUAN MD, MS - NPI 1023713450 - Psychiatry & Neurology in Orange, CA

Q: What is Karen Quan's NPI number?

The NPI number for Karen Quan is 1023713450. It was assigned to this individual provider in the NPPES registry on April 4, 2023.

Q: What is Karen Quan's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Karen Quan was last updated on May 27, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

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About Dr. Karen Yen Quan Md, Ms NPPES

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

DR. KAREN YEN QUAN MD, MS (NPI 1023713450) is an individual psychiatry provider in Orange, California, licensed in California (A199635) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1023713450

Entity TypeIndividualFemale

Primary Taxonomy2084P0800X

Provider Legal NameDR. KAREN YEN QUANCredential: MD, MS

Location Address101 THE CITY DR S BLDG 3Orange, CA 92868-3201

Mailing Address3800 W Chapman Ave Ste 500Orange, CA 92868-1638 · (714) 456-5770

Phone(714) 456-5770

Sole ProprietorNo

Enumeration DateApril 4, 2023

Last NPPES UpdateMay 27, 20262 updates tracked since enumeration

NPPES CertifiedMay 27, 2026

✔ NPI 1023713450 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 · A199635

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.

101 THE CITY DR S BLDG 3, Orange, CA 92868

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Secondary Practice Locations 2

Location 13800 W Chapman Ave Ste 500Orange, CA 92868-1638 · Phone (714) 456-5770

Location 2800 N Main StSanta Ana, CA 92701-3576 · Phone (714) 456-5770

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. Karen Yen Quan Md, Ms 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 92868 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.