ALEXANDER NICHOLAS PREVALLET DO
NPI 1659833556
Internal Medicine - Gastroenterology in Orange, CA
About Alexander Nicholas Prevallet Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER NICHOLAS PREVALLET DO (NPI 1659833556) is an individual gastroenterology provider in Orange, California, licensed in California (20A19716) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in San Diego.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Alexander Nicholas Prevallet Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Alexander Prevallet reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
- 250 clinicians in this Medicare group
Encinitas, CA 92024
- Reassigned Medicare billing, California enrollment
- 1,598 clinicians in this Medicare group
La Jolla, CA 92037
- Reassigned Medicare billing, California enrollment
- 278 clinicians in this Medicare group
San Diego, CA 92109
- Reassigned Medicare billing, California enrollment
- 1,100 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ORANGE, CA 92868
ORANGE, CA 92868
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 Alexander Prevallet's NPI number?
The NPI number for Alexander Prevallet is 1659833556. It was assigned to this individual provider in the NPPES registry on April 1, 2019.
Where is Alexander Prevallet located?
Alexander Prevallet practices at 101 The City Dr S, Orange, CA 92868. The listed phone number is (714) 456-8888.
What is Alexander Prevallet's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Alexander Prevallet enrolled in Medicare?
Yes. Alexander Prevallet is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alexander Prevallet's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Prevallet reassigns Medicare benefits to 4 organizations: The Regents Of The University Of California-Irvine (Orange, CA), Scripps Health (Encinitas, CA), Scripps Health Inpatient Providers Medical Group Inc. (La Jolla, CA) and Family Health Centers Of San Diego, Inc (San Diego, 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 Alexander Prevallet'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 Alexander Prevallet was last updated on October 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Alexander Nicholas Prevallet, DO · NPI 1659833556
Gastroenterology physician in Orange, California. Individual provider, active in the CMS NPPES registry since April 1, 2019.
## Identity
- **NPI:** 1659833556 (Entity type: Individual)
- **Enumerated:** April 1, 2019
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 20A19716 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 101 THE CITY DR S, Orange, CA 92868-3201
- **Phone:** (714) 456-8888
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): The Regents Of The University Of California-Irvine (NPI 1154479723, Orange, CA); Scripps Health (NPI 1700829199, Encinitas, CA); Scripps Health Inpatient Providers Medical Group Inc. (NPI 1699043000, La Jolla, CA); Family Health Centers Of San Diego, Inc (NPI 1386689701, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 12, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1659833556) · Data from the CMS NPPES public registry.