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MS. SONIA CHEN M.D.
NPI 1487946794
Student in an Organized Health Care Education/Training Program in Oakland, CA

Active since May 04, 2011PECOS EnrolledAccepts Medicare Assignment
280 W MACARTHUR BLVD, OAKLAND, CA 94611(510) 752-6400 Get Directions Write a Review

NPPES record last updated: February 11, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Sonia Chen M.d. NPPES

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

MS. SONIA CHEN M.D. (NPI 1487946794) is an individual student in an organized health care education/training program in Oakland, California and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2011).

NPPES Registry Identity

NPI1487946794
Entity TypeIndividualFemale
Primary Taxonomy390200000X
Provider Legal NameMS. SONIA CHENCredential: M.D.
Location Address280 W MACARTHUR BLVDOakland, CA 94611-5642
Mailing Address280 W Macarthur BlvdOakland, CA 94611-5642
Phone(510) 752-6400
Sole ProprietorYes
Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 2011
Enumeration DateMay 4, 2011
Last NPPES UpdateFebruary 11, 2022
✔ NPI 1487946794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyStudent in an Organized Health Care Education/Training ProgramStudent, Health Care
Taxonomy Code390200000X
Definition
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
280 W MACARTHUR BLVD, Oakland, CA 94611
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Sonia 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 ID1456588078
PECOS Enrollment IDI20161208001056
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.

Medicare Billing Reassignments

2

Medicare enrollment records show Sonia Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Permanente Medical Group Inc
9.6 mi
Internal Medicine
901 NEVIN
Richmond, CA 94801
  • Reassigned Medicare billing, California enrollment
  • 20,078 clinicians in this Medicare group
NPI 1235226531 (510) 307-1555
Ear, Nose And Throat Associates Of San Mateo County Inc
18 mi
Otolaryngology
100 S. ELLSWORTH AVENUE, SUITE 308
San Mateo, CA 94401
  • Reassigned Medicare billing, California enrollment
  • 8 clinicians in this Medicare group
NPI 1699792598 (650) 344-6896

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

JESSICA CHANG PHARM.D., APH
Pharmacist
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-8859
NORMA MIYEKO MARUBAYASHI HOLLOWAY PHARMD
Pharmacist
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-6468
DIANA HIROS CRNA
Nurse Anesthetist, Certified Registered
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-6238
IVY I. YU MD
Obstetrics & Gynecology
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-1000
THERESE M. HICKEY MD
Anesthesiology
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-1000
JOHN L. JONES MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-1000
ANNETTE CHENEVEY CRNA
Nurse Anesthetist, Certified Registered
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-6238
MRS. MICHELE NG PHARM.D.
Pharmacist
280 W MACARTHUR BLVD
OAKLAND, CA 94611
Alameda County (510) 752-6141

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 Sonia Chen's NPI number?

The NPI number for Sonia Chen is 1487946794. It was assigned to this individual provider in the NPPES registry on May 4, 2011.

Where is Sonia Chen located?

Sonia Chen practices at 280 W Macarthur Blvd, Oakland, CA 94611. The listed phone number is (510) 752-6400.

What is Sonia Chen's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Sonia Chen enrolled in Medicare?

Yes. Sonia 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.

Which organizations bill Medicare for Sonia Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sonia Chen reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Richmond, CA) and Ear, Nose And Throat Associates Of San Mateo County Inc (San Mateo, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sonia Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sonia Chen was last updated on February 11, 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.