DR. JOHN REINIER FAVOR NARVAEZ MD, MPH
NPI 1396131850
Surgery in Torrance, CA
About Dr. John Reinier Favor Narvaez Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN REINIER FAVOR NARVAEZ MD, MPH (NPI 1396131850) is an individual surgery provider in Torrance, California, licensed in California (A177676) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Guam Regional Medical City, and is a graduate of University Of California, San Francisco School Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John Reinier Favor Narvaez Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show John Reinier Narvaez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dededo, GU 96929
- Reassigned Medicare billing, Guam enrollment
- 432 clinicians in this Medicare group
Oka Tamuning, GU 96913
- Reassigned Medicare billing, Guam enrollment
- 320 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.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Guam Regional Medical City
Acute Care Hospitals · Dededo, GUPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90502 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.
TORRANCE, CA 90502
TORRANCE, CA 90502
TORRANCE, CA 90502
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 John Reinier Narvaez's NPI number?
The NPI number for John Reinier Narvaez is 1396131850. It was assigned to this individual provider in the NPPES registry on April 11, 2015.
Where is John Reinier Narvaez located?
John Reinier Narvaez practices at 1000 W Carson St, Torrance, CA 90502. The listed phone number is (424) 306-4000.
What is John Reinier Narvaez's specialty?
The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.
Is John Reinier Narvaez enrolled in Medicare?
Yes. John Reinier Narvaez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Reinier Narvaez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Reinier Narvaez reassigns Medicare benefits to 2 organizations: Guam Healthcare Development Incorporated (Dededo, GU) and Guam Memorial Hospital (Oka Tamuning, GU). 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 John Reinier Narvaez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Reinier Narvaez affiliated with any hospitals?
According to CMS data, John Reinier Narvaez is affiliated with Guam Regional Medical City.
When was this NPI record last updated?
The NPPES record for John Reinier Narvaez was last updated on October 27, 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.
# Dr. John Reinier Favor Narvaez, MD, MPH · NPI 1396131850
Surgery physician in Torrance, California. Individual provider, active in the CMS NPPES registry since April 11, 2015.
## Identity
- **NPI:** 1396131850 (Entity type: Individual)
- **Enumerated:** April 11, 2015
- **Primary specialty:** Surgery · taxonomy 208600000X
- **State license:** A177676 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 W CARSON ST, Torrance, CA 90502-2004
- **Phone:** (424) 306-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Guam Healthcare Development Incorporated (NPI 1326447939, Dededo, GU); Guam Memorial Hospital (NPI 1366519027, Oka Tamuning, GU) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** October 27, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1396131850) · Data from the CMS NPPES public registry.