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DR. TESSIE A OKAMURA M.D.
NPI 1063446102
Pediatrics in Walnut Creek, CA

Active since July 11, 2006PECOS Enrolled
1450 TREAT BLVD, SUITE 140, WALNUT CREEK, CA 94597(925) 296-9770(925) 296-9092 Get Directions Write a Review

NPPES record last updated: April 2, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Tessie A Okamura M.d. NPPES

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

DR. TESSIE A OKAMURA M.D. (NPI 1063446102) is an individual pediatrics provider in Walnut Creek, California, licensed in California (A69738) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1063446102
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. TESSIE A OKAMURACredential: M.D.
Location Address1450 TREAT BLVD, SUITE 140Walnut Creek, CA 94597-2168
Mailing AddressDept 34929, P.o. Box 39000San Francisco, CA 94139-0001 · (925) 952-2828 · Fax (925) 952-2850
Phone(925) 296-9770
Fax(925) 296-9092
Sole ProprietorNo
Enumeration DateJuly 11, 2006
Last NPPES UpdateApril 2, 2014
✔ NPI 1063446102 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · A69738
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
1450 TREAT BLVD, Walnut Creek, CA 94597
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Other Identifiers 4

Medicare UPINH44323CA
Medicare PINP00055646CA
Medicaid00A697380CA
Medicare PIN00A697381CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Tessie A Okamura M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Tessie Okamura reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

John Muir Physician Network
0.1 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 94597 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.

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. JASLEEN SOHAL M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. HENNESSEY TSENG M.D.
Internal Medicine (Cardiovascular Disease)
1450 TREAT BLVD, SUITE 220B
WALNUT CREEK, CA 94597
Contra Costa County (925) 937-1770
DR. DEBORAH A GREER M.D.
Family Medicine
1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9000
DR. RUQAYA FATIMA M.D.
Family Medicine
1450 TREAT BLVD, SUITE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 286-9000
DR. PRITI H PATEL M.D.
Family Medicine
1450 TREAT BLVD, SUITE 120B
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. DEVORAH E BEN-ZEEV M.D.
Internal Medicine
1450 TREAT BLVD, SUITE 120A
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9720
DR. KATHLEEN SMITH M.D.
Pediatrics
1450 TREAT BLVD, SUITE 140
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9770
DR. ANKIT PATEL M.D.
Family Medicine
1450 TREAT BLVD, STE 160
WALNUT CREEK, CA 94597
Contra Costa County (925) 296-9000

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 Tessie Okamura's NPI number?

The NPI number for Tessie Okamura is 1063446102. It was assigned to this individual provider in the NPPES registry on July 11, 2006.

Where is Tessie Okamura located?

Tessie Okamura practices at 1450 Treat Blvd Suite 140, Walnut Creek, CA 94597. The listed phone number is (925) 296-9770.

What is Tessie Okamura's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Tessie Okamura enrolled in Medicare?

Yes. Tessie Okamura is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Tessie Okamura's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tessie Okamura 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 Tessie Okamura'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 Tessie Okamura was last updated on April 2, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.