DR. JAMES BYRON TRIBE M.D.
NPI 1659597334
Hospitalist in Pasadena, CA
About Dr. James Byron Tribe M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES BYRON TRIBE M.D. (NPI 1659597334) is an individual hospitalist provider in Pasadena, California, licensed in California (A104848) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
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. James Byron Tribe M.d. 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 James Tribe reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 204 clinicians in this Medicare group
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
PASADENA, CA 91105
PASADENA, CA 91105
PASADENA, CA 91105
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 James Tribe's NPI number?
The NPI number for James Tribe is 1659597334. It was assigned to this individual provider in the NPPES registry on April 18, 2007.
Where is James Tribe located?
James Tribe practices at 50 Bellefontaine St Suite 307, Pasadena, CA 91105. The listed phone number is (626) 352-1444.
What is James Tribe's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is James Tribe enrolled in Medicare?
Yes. James Tribe 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 James Tribe's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Tribe reassigns Medicare benefits to 2 organizations: The Huntington Medical Foundation (Pasadena, CA) and Cedars-Sinai Medical Care Foundation (Los Angeles, 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 James Tribe'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 James Tribe was last updated on March 10, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. James Byron Tribe, M.D. · NPI 1659597334
Hospitalist physician in Pasadena, California. Individual provider, active in the CMS NPPES registry since April 18, 2007.
## Identity
- **NPI:** 1659597334 (Entity type: Individual)
- **Enumerated:** April 18, 2007
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** A104848 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 50 BELLEFONTAINE ST, SUITE 307, Pasadena, CA 91105-3132
- **Phone:** (626) 352-1444
## 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): The Huntington Medical Foundation (NPI 1154467181, Pasadena, CA); Cedars-Sinai Medical Care Foundation (NPI 1316984388, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** March 10, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1659597334) · Data from the CMS NPPES public registry.