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DR. WILLIAM CHEN M.D.
NPI 1881659142
Internal Medicine in Irvine, CA

Active since April 19, 2006PECOS EnrolledAccepts Medicare Assignment
6650 ALTON PKWY, SUITE 4131, IRVINE, CA 92618(949) 932-2514 Get Directions Write a Review

NPPES record last updated: December 1, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. William Chen M.d. NPPES

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

DR. WILLIAM CHEN M.D. (NPI 1881659142) is an individual internal medicine provider in Irvine, California, licensed in California (A93575) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2000).

NPPES Registry Identity

NPI1881659142
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM CHENCredential: M.D.
Location Address6650 ALTON PKWY, SUITE 4131Irvine, CA 92618-3734
Mailing Address4233 Dogwood AveSeal Beach, CA 90740-2850 · (562) 472-4153
Phone(949) 932-2514
Sole ProprietorNo
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2000
Enumeration DateApril 19, 2006
Last NPPES UpdateDecember 1, 2021
✔ NPI 1881659142 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A93575
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.
6650 ALTON PKWY, Irvine, CA 92618
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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

Dr. William Chen 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 ID3072613579
PECOS Enrollment IDI20070712000839
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 92618 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.

DR. TIFFANY WONG DOTE MD
Obstetrics & Gynecology
6650 ALTON PKWY, WOMEN'S HEALTH SERVICES ATTN: MARIA VASQUEZ
IRVINE, CA 92618
Orange County (714) 644-2381
NOAH RODRIGUEZ MD
Obstetrics & Gynecology
6650 ALTON PKWY, MEDICAL OFFICE BUILDING 2, 3RD FLOOR
IRVINE, CA 92618
Orange County (949) 932-5685
DR. CECILIA ANNE PEREZ M.D.
Obstetrics & Gynecology
6650 ALTON PKWY, MOB2 3RD FLOOR
IRVINE, CA 92618
Orange County (949) 932-5000
DR. CHRISTOPHER WASHINGTON M.D.
Surgery
6650 ALTON PKWY, ALTON/SAND CANYON MOB 2
IRVINE, CA 92618
Orange County (714) 387-3430
MRS. ANGELA HOU LIANG NP
Nurse Practitioner (Women's Health)
6650 ALTON PKWY
IRVINE, CA 92618
Orange County (949) 932-5000
DR. SHIREENA DESAI M.D.
Internal Medicine (Gastroenterology)
6650 ALTON PKWY, GASTROENTEROLOGY, MOB 2
IRVINE, CA 92618
Orange County (949) 932-5000
TIFFANY LINN CHAVES
Dietitian, Registered
6650 ALTON PKWY
IRVINE, CA 92618
Orange County (949) 636-5011
DR. TRAVIS JAMES COHOON MD
Internal Medicine (Cardiovascular Disease)
6650 ALTON PKWY
IRVINE, CA 92618
Orange County (888) 988-2800

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 William Chen's NPI number?

The NPI number for William Chen is 1881659142. It was assigned to this individual provider in the NPPES registry on April 19, 2006.

Where is William Chen located?

William Chen practices at 6650 Alton Pkwy Suite 4131, Irvine, CA 92618. The listed phone number is (949) 932-2514.

What is William Chen's specialty?

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

Is William Chen enrolled in Medicare?

Yes. William Chen 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 William Chen was last updated on December 1, 2021. 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.