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CALVIN CHIH-CHIA WU M.D.
NPI 1659646891
Internal Medicine - Endocrinology, Diabetes & Metabolism in Glendale, CA

Active since March 21, 2012PECOS EnrolledAccepts Medicare Assignment
330 N BRAND BLVD STE 700, GLENDALE, CA 91203(917) 382-0901 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 1, 2025, May 2, 2018, Jun 30, 2017 (3 updates tracked since 2017).

About Calvin Chih-chia Wu M.d. NPPES

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

CALVIN CHIH-CHIA WU M.D. (NPI 1659646891) is an individual endocrinology, diabetes & metabolism provider in Glendale, California, licensed in California (A122403) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1659646891
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameCALVIN CHIH-CHIA WUCredential: M.D.
Location Address330 N BRAND BLVD STE 700Glendale, CA 91203-2336
Mailing Address342 5th Ave Apt 3San Francisco, CA 94118-2340 · (415) 254-2834 · Fax (347) 745-3846
Phone(917) 382-0901
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateMarch 21, 2012
Last NPPES UpdateJuly 1, 20253 updates tracked since enumeration
NPPES CertifiedJuly 1, 2025
✔ NPI 1659646891 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A122403
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
330 N BRAND BLVD STE 700, Glendale, CA 91203
Open in Google Maps ↗

Other Identifiers 1

Other113813CA · Sid # 113813

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

Calvin Chih-chia Wu 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 ID8426340563
PECOS Enrollment IDI20170717001562
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 91203 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 19

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

CAMBER SPRING GLEIM NBC-HWC
Health and Wellness Coach
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (937) 750-1892
MICHAEL EDNIE MD XRH OF CA PC
Nurse Practitioner
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (857) 990-6111
CASEY WELS HAGERMAN NBC-HWC
Counselor (Mental Health)
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (415) 290-2952
MS. JENNA LOUISE TEAGUE M.A.
Health and Wellness Coach
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (415) 717-3833
NEXUS WOUND CONSULTANTS PC
Family Medicine
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (830) 285-8882
ROOTS PSYCHIATRIC SERVICES PC
Clinic/Center (Adolescent and Children Mental Health)
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (800) 516-0975
SUZAN RANDA ABBOUD
Health and Wellness Coach
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (800) 516-0975
TRUE NATURE VENTURES, LLC
Health and Wellness Coach
330 N BRAND BLVD STE 700
GLENDALE, CA 91203
Los Angeles County (800) 516-0975

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 Calvin Wu's NPI number?

The NPI number for Calvin Wu is 1659646891. It was assigned to this individual provider in the NPPES registry on March 21, 2012.

Where is Calvin Wu located?

Calvin Wu practices at 330 N Brand Blvd Ste 700, Glendale, CA 91203. The listed phone number is (917) 382-0901.

What is Calvin Wu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Calvin Wu enrolled in Medicare?

Yes. Calvin Wu 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 Calvin Wu was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.