NPPES file of Aug 9, 2026

David Jeffrey Demanes, M.D.

Radiation Oncology Physician · Los Angeles, CA

David Jeffrey Demanes, M.D. is a radiation oncology physician with a practice address in Los Angeles, California, and NPI 1407914757, issued on Dec 5, 2006. Check the license (California G29678, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1407914757
Name
David Jeffrey Demanes
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
G29678 CA
Self-reported in NPPES; status is on the state search
Practice location
200 Medical Plz, Los Angeles, CA 90095
Phone
(310) 825-0128
Enumerated
Dec 5, 2006
Record last updated
Jun 21, 2010 (not updated in 16 years: call before relying on the address or phone)
Medicaid ID
00G296780 CA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →

Also registered at 200 Medical Plz

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

  1. Elliot Abemayor, MDSurgery Physician1972527414
  2. Zain Al-Safi, M.D.Obstetrics & Gynecology Physician1578728317
  3. Paul AllynInfectious Disease Physician1588831341
  4. Richard Aranda, MDGastroenterology Physician1104851138
  5. Nilo Arnaiz, MDPulmonary Disease Physician1386678498
  6. Robyn Banerjee, MDRadiation Oncology Physician1174879795

Verify David Jeffrey Demanes in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G29678    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

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David Jeffrey Demanes among 735 radiation oncology physician records in California

David Jeffrey Demanes, M.D. 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 not. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 55% newer
  • In a Medicare fileNo · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 74% of these records are
  • Record last updated2010 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 735 in California → Every provider in Los Angeles → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Phillip Beron, MDLos Angeles, CA 900951083698237
  2. Paul Duong, M.D.Los Angeles, CA 900951790750768
  3. Hany Elsaleh, MDLos Angeles, CA 900951639104623
  4. Judith Ford, MDLos Angeles, CA 900951982638565
  5. Sara Kim, M.D.Los Angeles, CA 900951851405278
  6. Christopher King, M.D.Los Angeles, CA 900951962574145
  7. Patrick Kupelian, MDLos Angeles, CA 900951144205881
  8. Steve Lee, MDLos Angeles, CA 900951558395244

Common questions

What is David Jeffrey Demanes, M.D.'s NPI number?

David Jeffrey Demanes, M.D.'s National Provider Identifier (NPI) is 1407914757, issued on Dec 5, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Jeffrey Demanes, M.D. located?

The NPPES record lists a practice address at 200 Medical Plz, Los Angeles, CA, 90095. Phone: (310) 825-0128. Providers update this record themselves, so call before visiting.

How can I verify David Jeffrey Demanes, M.D.'s license?

NPPES lists California license number G29678, 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.