KATHERINE TUAN M.D.
NPI 1588907315
Internal Medicine in Downey, CA

Active since March 29, 2013PECOS EnrolledAccepts Medicare Assignment
9449 IMPERIAL HWY, DOWNEY, CA 90242(800) 823-4040 Get Directions Write a Review

NPPES record last updated: November 29, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Katherine Tuan M.d. NPPES

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

KATHERINE TUAN M.D. (NPI 1588907315) is an individual internal medicine provider in Downey, California, licensed in California (A132432) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (2013).

NPPES Registry Identity

NPI1588907315
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameKATHERINE TUANCredential: M.D.
Location Address9449 IMPERIAL HWYDowney, CA 90242-2814
Mailing Address9449 Imperial HwyDowney, CA 90242-2814
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 2013
Enumeration DateMarch 29, 2013
Last NPPES UpdateNovember 29, 2021
NPI 1588907315 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in CA · A132432
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

9449 IMPERIAL HWY, Downey, CA 90242

Other Identifiers 1

OtherKT3232267556Kt3232267556

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Katherine Tuan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5890073043
PECOS Enrollment IDI20161024001293
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 90242 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
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 20

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

Surgery (Surgical Oncology)
9449 IMPERIAL HWY, ORCHARD A 309
DOWNEY, CA 90242
Pharmacist (Pharmacotherapy)
9449 IMPERIAL HWY
DOWNEY, CA 90242
Pharmacist
9449 IMPERIAL HWY
DOWNEY, CA 90242
Surgery (Vascular Surgery)
9449 IMPERIAL HWY, ORCHARD MEDICAL OFFICES - BLDG A - SUITE 309
DOWNEY, CA 90242
Physical Therapist
9449 IMPERIAL HWY, GARDEN MEDICAL OFFICE, 3RD FLOOR, PM&R DEPT.
DOWNEY, CA 90242
Internal Medicine
9449 IMPERIAL HWY
DOWNEY, CA 90242
Internal Medicine
9449 IMPERIAL HWY
DOWNEY, CA 90242
Surgery
9449 IMPERIAL HWY
DOWNEY, CA 90242

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 Katherine Tuan's NPI number?

The NPI number for Katherine Tuan is 1588907315. It was assigned to this individual provider in the NPPES registry on March 29, 2013.

Where is Katherine Tuan located?

Katherine Tuan practices at 9449 Imperial Hwy, Downey, CA 90242. The listed phone number is (800) 823-4040.

What is Katherine Tuan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Katherine Tuan enrolled in Medicare?

Yes. Katherine Tuan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Katherine Tuan was last updated on November 29, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.