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JAMES ZHEN ZHI LIANG D.O.
NPI 1780618322
Family Medicine in Oakland, CA

Active since July 10, 2006PECOS EnrolledAccepts Medicare Assignment
85.73/100
CMS Quality Rating
1416 35TH AVE, OAKLAND, CA 94601(510) 479-1313(510) 500-3070 Get Directions Write a Review

NPPES record last updated: September 25, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About James Zhen Zhi Liang D.o. NPPES

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

JAMES ZHEN ZHI LIANG D.O. (NPI 1780618322) is an individual family medicine provider in Oakland, California, licensed in California (20A7592) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1999).

NPPES Registry Identity

NPI1780618322
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameJAMES ZHEN ZHI LIANGCredential: D.O.
Location Address1416 35TH AVEOakland, CA 94601-3511
Mailing Address1416 35th AveOakland, CA 94601-3511 · (510) 479-1313 · Fax (510) 500-3070
Phone(510) 479-1313
Fax(510) 500-3070
Sole ProprietorYes
Medical School CMSOtherGraduated 1999
Enumeration DateJuly 10, 2006
Last NPPES UpdateSeptember 25, 2020
NPPES CertifiedSeptember 25, 2020
✔ NPI 1780618322 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in CA · 20A7592
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1416 35TH AVE, Oakland, CA 94601
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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

James Zhen Zhi Liang D.o. 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 ID4486629276
PECOS Enrollment IDI20040826000279
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 Reassignment

Medicare enrollment records show James Liang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Physician Network
14 mi
General Practice
1450 TREAT BLVD, SUITE 300
Walnut Creek, CA 94597
  • Reassigned Medicare billing, California enrollment
  • 650 clinicians in this Medicare group
NPI 1841407665 (925) 296-9872

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94601 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
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.73/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality82.68
Promoting Interoperability99
Improvement Activities40
Cost70.58

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 James Liang's NPI number?

The NPI number for James Liang is 1780618322. It was assigned to this individual provider in the NPPES registry on July 10, 2006.

Where is James Liang located?

James Liang practices at 1416 35th Ave, Oakland, CA 94601. The listed phone number is (510) 479-1313.

What is James Liang's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is James Liang enrolled in Medicare?

Yes. James Liang 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 organization bills Medicare for James Liang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Liang reassigns Medicare benefits to John Muir Physician Network (Walnut Creek, CA). The 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 James Liang'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 James Liang was last updated on September 25, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.