NPPES file of Aug 9, 2026

Karissa Britten, MD

Hematology & Oncology Physician · Los Angeles, CA

Karissa Britten, MD is a hematology & oncology physician with a practice address in Los Angeles, California, and NPI 1518461862, issued on Mar 21, 2018. Check the license (California A166753, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518461862
Name
Karissa Britten
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A166753 CA
Self-reported in NPPES; status is on the state search
Practice location
127 S San Vicente Blvd FL 7, Los Angeles, CA 90048
Phone
(310) 888-8680
Enumerated
Mar 21, 2018
Record last updated
Aug 28, 2025
Fax
(310) 888-1886
Medicare enrollment
Enrolled (PECOS I20210521001263); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2018
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 127 S San Vicente Blvd FL 7

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

  1. Marc AttiyehSurgical Oncology Physician1225471006
  2. Jin Sun Bitar, M.D.Medical Oncology Physician1477940161
  3. Victoria Cerda, MD, MPHObstetrics & Gynecology Physician1265929715
  4. Jason Chan, M.D. PH.D.Hematology & Oncology Physician1154735660
  5. Fahima Dossa, MDSurgical Oncology Physician1427832617
  6. Cristina Ferrone, M.D.Surgical Oncology Physician1316053192

Verify Karissa Britten in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A166753
    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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2 hospitals and group practices

  1. Cedars-Sinai Medical CenterWest Hollywood, CA · Acute Care Hospitals5 of 5 stars
  2. Cedars-Sinai Medical Care FoundationBeverly Hills, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

Other hematology & oncology physician records in California

  1. Mark Abate, M.D.Santa Barbara, CA1588778674
  2. Iman Abdalla, MDLos Angeles, CA1730248311
  3. Haifaa Abdulhaq, MDFresno, CA1508024647
  4. Nihal Abdulla, MDLos Alamitos, CA1750585345
  5. Mehrad Abedi, M.D.Sacramento, CA1467459222
  6. Oyewale Abidoye, M.D.La Jolla, CA1790841815
  7. Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
  8. Mohamad Adada, M.D., PHDRoseville, CA1528590734
  9. Jesse Adams, MDSacramento, CA1851479554
  10. Thompson Adams, MDSanta Monica, CA1407880891

Common questions

What is Karissa Britten, MD's NPI number?

Karissa Britten, MD's National Provider Identifier (NPI) is 1518461862, issued on Mar 21, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Karissa Britten, MD located?

The NPPES record lists a practice address at 127 S San Vicente Blvd FL 7, Los Angeles, CA, 90048. Phone: (310) 888-8680. Providers update this record themselves, so call before visiting.

How can I verify Karissa Britten, MD's license?

NPPES lists California license number A166753, 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.

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.