JAMES LAWRENCE REMBERT MD
NPI 1124080916
Radiology - Radiation Oncology in Berkeley, CA
About James Lawrence Rembert Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES LAWRENCE REMBERT MD (NPI 1124080916) is an individual radiation oncology provider in Berkeley, California, licensed in California (A81527) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Pleasant Hill, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2001).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
James Lawrence Rembert Md 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
4Medicare enrollment records show James Rembert reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 650 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 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 20
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 94704 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.
Reported Quality Measures
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.
BERKELEY, CA 94704
BERKELEY, CA 94704
BERKELEY, CA 94704
BERKELEY, CA 94704
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 Rembert's NPI number?
The NPI number for James Rembert is 1124080916. It was assigned to this individual provider in the NPPES registry on April 5, 2006.
Where is James Rembert located?
James Rembert practices at 2001 Dwight Way, Berkeley, CA 94704. The listed phone number is (510) 204-5311.
What is James Rembert's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is James Rembert enrolled in Medicare?
Yes. James Rembert 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 Rembert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Rembert reassigns Medicare benefits to 4 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), John Muir Physician Network (Walnut Creek, CA) and John Muir Trauma Physicians Billing Service (Walnut Creek, 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 Rembert'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 Rembert was last updated on September 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# James Lawrence Rembert, MD · NPI 1124080916
Radiation Oncology physician in Berkeley, California. Individual provider, active in the CMS NPPES registry since April 5, 2006.
## Identity
- **NPI:** 1124080916 (Entity type: Individual)
- **Enumerated:** April 5, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** A81527 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2001 DWIGHT WAY, Berkeley, CA 94704
- **Phone:** (510) 204-5311 · **Fax:** (510) 204-1499
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); John Muir Physician Network (NPI 1841407665, Walnut Creek, CA); John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2001
## Record status
- **NPPES last updated:** September 22, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1124080916) · Data from the CMS NPPES public registry.