DR. NEIL MICHAEL BARTH M.D.
NPI 1245379858
Internal Medicine - Hematology & Oncology in Newport Beach, CA
About Dr. Neil Michael Barth M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NEIL MICHAEL BARTH M.D. (NPI 1245379858) is an individual hematology & oncology provider in Newport Beach, California, licensed in California (G37824) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Neil Michael Barth M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Neil Barth reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Simi Valley, CA 93065
- Reassigned Medicare billing, California enrollment
- 710 clinicians in this Medicare group
Lihue, HI 96766
- Reassigned Medicare billing, Hawaii enrollment
- 298 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 92660 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWPORT BEACH, CA 92660
NEWPORT BEACH, CA 92660
NEWPORT BEACH, CA 92660
NEWPORT BEACH, CA 92660
NEWPORT BEACH, CA 92660
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 Neil Barth's NPI number?
The NPI number for Neil Barth is 1245379858. It was assigned to this individual provider in the NPPES registry on February 6, 2007.
Where is Neil Barth located?
Neil Barth practices at 20162 SW Birch St Suite 200, Newport Beach, CA 92660. The listed phone number is (949) 553-3330.
What is Neil Barth's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Neil Barth enrolled in Medicare?
Yes. Neil Barth is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Neil Barth's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Neil Barth reassigns Medicare benefits to 2 organizations: County Of Ventura (Simi Valley, CA) and Kauai Medical Clinic (Lihue, HI). 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 Neil Barth'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 Neil Barth was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.