NPPES file of Aug 9, 2026

Robert W. Decker, M.D.

Hematology & Oncology Physician · Beverly Hills, CA

Robert W. Decker, M.D. is a hematology & oncology physician with a practice address in Beverly Hills, California, and NPI 1023014164, issued on Jun 23, 2005. Check the license (California G48876, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1023014164
Name
Robert W. Decker
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
G48876 CA
Self-reported in NPPES; status is on the state search
Practice location
9090 Wilshire Blvd, Beverly Hills, CA 90211
Phone
(310) 888-8680
Enumerated
Jun 23, 2005
Record last updated
Apr 30, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(310) 888-1886
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 hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 9090 Wilshire Blvd

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

  1. Mary Grace Brandon, NPAcute Care Nurse Practitioner1164632287
  2. Julie Dunhill, M.D.Hematology & Oncology Physician1083610570
  3. Jonathan Ellis, MDGastroenterology Physician1306876263
  4. Leland Green, M.D.Hematology & Oncology Physician1730185877
  5. David Hoffman, M.D.Hematology & Oncology Physician1538165675
  6. Emily Kaymen, M.D.Hematology & Oncology Physician1649706532

Verify Robert W. Decker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G48876    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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Industry payments in 2024: $23.51

1 payment: food and beverage; the largest payer was Genzyme Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Decker$23.51
  2. Specialty average$7,481.41

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

Robert W. Decker among 1,583 hematology & oncology physician records in California

Robert W. Decker, M.D. is one of 1,583 hematology & 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2008 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

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

All 1,583 in California → Every provider in Beverly Hills → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Linnea Chap, M.D.Beverly Hills, CA 902111700839362
  2. Julie Dunhill, M.D.Beverly Hills, CA 902111083610570
  3. Afshin Gabayan, M.D.Beverly Hills, CA 902111659412757
  4. Leland Green, M.D.Beverly Hills, CA 902111730185877
  5. David Hoffman, M.D.Beverly Hills, CA 902111538165675
  6. Emily Kaymen, M.D.Beverly Hills, CA 902111649706532
  7. Jeremy Lorber, MDBeverly Hills, CA 902111689940652
  8. Philomena McAndrew, M.D.Beverly Hills, CA 902111104822600

Common questions

What is Robert W. Decker, M.D.'s NPI number?

Robert W. Decker, M.D.'s National Provider Identifier (NPI) is 1023014164, issued on Jun 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robert W. Decker, M.D. located?

The NPPES record lists a practice address at 9090 Wilshire Blvd, Beverly Hills, CA, 90211. Phone: (310) 888-8680. Providers update this record themselves, so call before visiting.

How can I verify Robert W. Decker, M.D.'s license?

NPPES lists California license number G48876, 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.

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.