1. Home
  2. Directory
  3. California
  4. Alamo
  5. Pediatrics
  6. NPI Profile

COLETTE VASSILIAN D.O.
NPI 1104222660
Pediatrics in Alamo, CA

Active since November 11, 2014PECOS Enrolled
1505 SAINT ALPHONSUS WAY, ALAMO, CA 94507(925) 838-4633 Get Directions Write a Review

NPPES record last updated: December 19, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 19, 2024, Sep 7, 2018, Feb 8, 2016 (3 updates tracked since 2016).

About Colette Vassilian D.o. NPPES

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

COLETTE VASSILIAN D.O. (NPI 1104222660) is an individual pediatrics provider in Alamo, California, licensed in California (20A14283) and active in the NPI registry since November 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104222660
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameCOLETTE VASSILIANCredential: D.O.
Location Address1505 SAINT ALPHONSUS WAYAlamo, CA 94507-1570
Mailing Address1450 Treat Blvd Ste 300Walnut Creek, CA 94597-2168 · (925) 952-2828
Phone(925) 838-4633
Sole ProprietorNo
Enumeration DateNovember 11, 2014
Last NPPES UpdateDecember 19, 20243 updates tracked since enumeration
NPPES CertifiedDecember 19, 2024
✔ NPI 1104222660 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CA · 20A14283
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.
1505 SAINT ALPHONSUS WAY, Alamo, CA 94507
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Colette Vassilian D.o. 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94507 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 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JULIE A GOO MD
Family Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 838-4633
DR. CATHRIEN ABDELNOR MD
Family Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 838-7337
DR. JANET E GASTON M.D.
Internal Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 837-4225
DR. RACHEL MCNIFF MD
Pediatrics
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 838-4633
DR. NHU Q PHAM M.D.
Internal Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 838-5750
DR. PAUL S CORTEZ M.D.
Pediatrics
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 838-7337
DR. HOWARD L ZEIGER M.D.
Internal Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 837-4225
DR. JAMES J WOODS M.D.
Internal Medicine
1505 SAINT ALPHONSUS WAY
ALAMO, CA 94507
Contra Costa County (925) 837-4225

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 Colette Vassilian's NPI number?

The NPI number for Colette Vassilian is 1104222660. It was assigned to this individual provider in the NPPES registry on November 11, 2014.

Where is Colette Vassilian located?

Colette Vassilian practices at 1505 Saint Alphonsus Way, Alamo, CA 94507. The listed phone number is (925) 838-4633.

What is Colette Vassilian's specialty?

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

Is Colette Vassilian enrolled in Medicare?

Yes. Colette Vassilian is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Colette Vassilian was last updated on December 19, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 months 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.