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DR. MELISSA JULIA RUIZ M.D.
NPI 1376795377
Pediatrics in Ventura, CA

Active since October 21, 2008PECOS Enrolled
3291 LOMA VISTA ROAD #302, PEDIATRIC DIAGNOSTIC CENTER, VENTURA, CA 93003(805) 652-6255 Get Directions Write a Review

NPPES record last updated: July 17, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 17, 2023, Oct 26, 2022, Sep 14, 2016 (3 updates tracked since 2016).

About Dr. Melissa Julia Ruiz M.d. NPPES

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

DR. MELISSA JULIA RUIZ M.D. (NPI 1376795377) is an individual pediatrics provider in Ventura, California, licensed in California (A 137641) and active in the NPI registry since October 2008. She is enrolled in Medicare PECOS and maintains a secondary practice location in Ventura.

NPPES Registry Identity

NPI1376795377
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MELISSA JULIA RUIZCredential: M.D.
Location Address3291 LOMA VISTA ROAD #302, PEDIATRIC DIAGNOSTIC CENTERVentura, CA 93003-3099
Mailing Address3291 Loma Vista Road #302, Pediatric Diagnostic CenterVentura, CA 93003-3099 · (805) 652-6255
Phone(805) 652-6255
Sole ProprietorNo
Enumeration DateOctober 21, 2008
Last NPPES UpdateJuly 17, 20233 updates tracked since enumeration
NPPES CertifiedJuly 17, 2023
✔ NPI 1376795377 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in CA · A 137641✔ Licensed in IL · 036126302
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.

Secondary Practice Location 1

Location 1300 Hillmont AveVentura, CA 93003-1651 · Phone (805) 652-6255

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Melissa Julia Ruiz 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 Reassignments

2

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

County Of Ventura
Community/Behavioral Health
2500 S C ST STE D
Oxnard, CA 93033
  • Reassigned Medicare billing, California enrollment
  • 710 clinicians in this Medicare group
NPI 1003509852 (805) 385-9460
Santa Barbara Neighborhood Clinics
Federally Qualified Health Center (FQHC)
915 N MILPAS ST
Santa Barbara, CA 93103
  • Reassigned Medicare billing, California enrollment
  • 42 clinicians in this Medicare group
NPI 1063438232 (805) 963-1641

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 93003 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
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
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 Melissa Ruiz's NPI number?

The NPI number for Melissa Ruiz is 1376795377. It was assigned to this individual provider in the NPPES registry on October 21, 2008.

Where is Melissa Ruiz located?

Melissa Ruiz practices at 3291 Loma Vista Road #302 Pediatric Diagnostic Center, Ventura, CA 93003. The listed phone number is (805) 652-6255.

What is Melissa Ruiz's specialty?

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

Is Melissa Ruiz enrolled in Medicare?

Yes. Melissa Ruiz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Melissa Ruiz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Ruiz reassigns Medicare benefits to 2 organizations: County Of Ventura (Oxnard, CA) and Santa Barbara Neighborhood Clinics (Santa Barbara, 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 Melissa Ruiz'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 Melissa Ruiz was last updated on July 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.