NPPES file of Aug 9, 2026

James Lawrence Rembert, MD

Radiation Oncology Physician · Berkeley, CA

James Lawrence Rembert, MD is a radiation oncology physician with a practice address in Berkeley, California, and NPI 1124080916, issued on Apr 5, 2006. Check the license (California A81527, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124080916
Name
James Lawrence Rembert
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A81527 CA
Self-reported in NPPES; status is on the state search
Practice location
2001 Dwight Way, Berkeley, CA 94704
Phone
(510) 204-5311
Enumerated
Apr 5, 2006
Record last updated
Sep 22, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(510) 204-1499
Medicare enrollment
Enrolled (PECOS I20060613000197); accepts Medicare assignment
Medical or professional school
Perelman School Of Med At The University Of Pennsylvania, 2001
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2001 Dwight Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Neal Anzai, M.D.Psychiatry Physician1750597688
  2. Mary-Ellis Arnold, R.N., A.N.P.Adult Health Nurse Practitioner1619018322
  3. Kate Bartholomew, LCSWClinical Social Worker1881647196
  4. Rajesh Behl, M.D.Hematology & Oncology Physician1104844174
  5. Anne BosshardtInternal Medicine Physician1841435427
  6. Erika Bruce, NPAdult Health Nurse Practitioner1881694198

Verify James Lawrence Rembert in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A81527
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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60% more Medicare Part D claims than the average radiation oncology physician in 2024

214 Medicare Part D claims for 81 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. James Rembert214
  2. Specialty average134

Most prescribed

  1. Tamsulosin Hcl51 claims
  2. Orgovyx39 claims
  3. Dexamethasone17 claims
  4. Mometasone Furoate16 claims
  5. Ibuprofen11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The MIPS final score for 2023 (Medicare payment program): 94.2 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score88.1
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $130.00

1 payment: food and beverage; the largest payer was icotec Medical Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. James Rembert$130.00
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 3 group practices

  1. John Muir Physician NetworkPleasant Hill, CA
  2. Ucsf Medical Group Business ServicesBerkeley, CA
  3. University OF California San FranciscoSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

James Lawrence Rembert among 735 radiation oncology physician records in California

James Lawrence Rembert, MD is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 55% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2001 · median 2005 among the 545 with a school on file
  • Record last updated2021 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in California

There are 735 radiation oncology physician records in California.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Patrick Swift, M.D.Berkeley, CA 947041053312355
  2. Jason Kelly, MDOakland, CA 946111063590859
  3. Trang La, MDOakland, CA 946111003002718
  4. Matthew Susko, M.D.Oakland, CA 946111215399811
  5. Michael Faer, M.D.Oakland, CA 946091932192242
  6. Charles Fiske, M.D.Oakland, CA 946091013900331
  7. John Salzman, MDOakland, CA 946091457349342
  8. Gopal Sachdeva, MDEmeryville, CA 946081447449509

Common questions

What is James Lawrence Rembert, MD's NPI number?

James Lawrence Rembert, MD's National Provider Identifier (NPI) is 1124080916, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is James Lawrence Rembert, MD located?

The NPPES record lists a practice address at 2001 Dwight Way, Berkeley, CA, 94704. Phone: (510) 204-5311. Providers update this record themselves, so call before visiting.

How can I verify James Lawrence Rembert, MD's license?

NPPES lists California license number A81527, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does James Lawrence Rembert, MD prescribe under Medicare Part D?

In 2024, James Lawrence Rembert, MD had 214 Medicare Part D claims for 81 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.

What is James Lawrence Rembert, MD's MIPS final score?

The 2023 MIPS final score is 94.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.