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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DENNIS CHOU
NPI 1295430155
Family Medicine in San Ramon, CA

Active since March 31, 2023PECOS EnrolledAccepts Medicare Assignment
12677 ALCOSTA BLVD STE 230, SAN RAMON, CA 94583(925) 866-8050(925) 837-3913 Get Directions Write a Review

NPPES record last updated: October 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 1, 2026, Jul 17, 2026, Mar 31, 2023 (3 updates tracked since 2023).

About Dennis Chou NPPES

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

DENNIS CHOU (NPI 1295430155) is an individual family medicine provider in San Ramon, California, licensed in California (20A23612) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1295430155
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDENNIS CHOU
Location Address12677 ALCOSTA BLVD STE 230San Ramon, CA 94583-4413
Mailing Address12677 Alcosta Blvd Ste 230San Ramon, CA 94583-4413 · (925) 866-8050 · Fax (925) 837-3913
Phone(925) 866-8050
Fax(925) 837-3913
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateMarch 31, 2023
Last NPPES UpdateOctober 1, 20263 updates tracked since enumeration
NPPES CertifiedOctober 1, 2026
✔ NPI 1295430155 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 · 20A23612
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.
12677 ALCOSTA BLVD STE 230, San Ramon, CA 94583
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Other Names 1

Other Name (5)Dan Chou Do

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

Dennis Chou 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 ID8820554546
PECOS Enrollment IDI20260731004402
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 Dennis Chou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Physician Network
12 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 94583 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.

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 Dennis Chou's NPI number?

The NPI number for Dennis Chou is 1295430155. It was assigned to this individual provider in the NPPES registry on March 31, 2023. The provider is also known as Dan Chou Do.

Where is Dennis Chou located?

Dennis Chou practices at 12677 Alcosta Blvd Ste 230, San Ramon, CA 94583. The listed phone number is (925) 866-8050.

What is Dennis Chou's specialty?

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

Is Dennis Chou enrolled in Medicare?

Yes. Dennis Chou 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 Dennis Chou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Chou 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 Dennis Chou'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 Dennis Chou was last updated on October 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 days 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.