DR. CONSTANTINOS CHRYSOSTOMOU MD
NPI 1801868658
Pediatrics - Pediatric Cardiology in Fountain Valley, CA
About Dr. Constantinos Chrysostomou Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CONSTANTINOS CHRYSOSTOMOU MD (NPI 1801868658) is an individual pediatric cardiology provider in Fountain Valley, California, licensed in California (C129462) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and maintains a secondary practice location in Orlando.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Constantinos Chrysostomou Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Constantinos Chrysostomou reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fountain Valley, CA 92708
- Reassigned Medicare billing, California enrollment
- 948 clinicians in this Medicare group
Irvine, CA 92617
- Reassigned Medicare billing, California enrollment
- 118 clinicians in this Medicare group
Corpus Christi, TX 78411
- Reassigned Medicare billing, Texas enrollment
- 510 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FOUNTAIN VALLEY, CA, CA 92708
FOUNTAIN VALLEY, CA 92708
FOUNTAIN VALLEY, CA 92708
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 Constantinos Chrysostomou's NPI number?
The NPI number for Constantinos Chrysostomou is 1801868658. It was assigned to this individual provider in the NPPES registry on February 6, 2006.
Where is Constantinos Chrysostomou located?
Constantinos Chrysostomou practices at 17360 Brookhurst Street Attn: Network Management, Fountain Valley, CA 92708. The listed phone number is (714) 377-2900.
What is Constantinos Chrysostomou's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Constantinos Chrysostomou enrolled in Medicare?
Yes. Constantinos Chrysostomou is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Constantinos Chrysostomou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Constantinos Chrysostomou reassigns Medicare benefits to 3 organizations: Memorialcare Medical Foundation (Fountain Valley, CA), Confermed Of California PC (Irvine, CA) and Children's Physician Services Of South Texas (Corpus Christi, TX). 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 Constantinos Chrysostomou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Constantinos Chrysostomou accept?
Health plans from Blue Cross and Blue Shield of Texas list Constantinos Chrysostomou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Constantinos Chrysostomou was last updated on June 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Constantinos Chrysostomou, MD · NPI 1801868658
Pediatric Cardiology physician in Fountain Valley, California. Individual provider, active in the CMS NPPES registry since February 6, 2006.
## Identity
- **NPI:** 1801868658 (Entity type: Individual)
- **Enumerated:** February 6, 2006
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** C129462 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 17360 BROOKHURST STREET, ATTN: NETWORK MANAGEMENT, Fountain Valley, CA 92708-3720
- **Phone:** (714) 377-2900
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Memorialcare Medical Foundation (NPI 1205167350, Fountain Valley, CA); Confermed Of California PC (NPI 1316584709, Irvine, CA); Children's Physician Services Of South Texas (NPI 1568658227, Corpus Christi, TX) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 23, 2022
- **Other identifiers:** Medicaid 101479082 (PA); Medicaid 016288000 (FL)
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Source: [NPI Profile](https://npiprofile.com/npi/1801868658) · Data from the CMS NPPES public registry.