NPPES file of Aug 9, 2026

Robert T. O'Donnell, M.D., PH.D.

Hematology & Oncology Physician · Sacramento, CA

Robert T. O'Donnell, M.D., PH.D. is a hematology & oncology physician with a practice address in Sacramento, California, and NPI 1386627586, issued on Nov 22, 2005. Check the license (California G063398, 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
1386627586
Name
Robert T. O'Donnell
Credential
M.D., PH.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
G063398 CA
Self-reported in NPPES; status is on the state search
Practice location
2279 45TH Street, Sacramento, CA 95817
Phone
(916) 734-5959
Enumerated
Nov 22, 2005
Record last updated
Aug 22, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(916) 703-5265
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 2279 45TH Street

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

  1. Mili Arora, MDHematology & Oncology Physician1023249422
  2. Helen Chew, M.D.Hematology & Oncology Physician1801870142
  3. Helen Chow, M.D.Hematology & Oncology Physician1326324575
  4. Scott Christensen, M.D.Hematology & Oncology Physician1316923899
  5. Lorinda Hedger, RNCase Management Registered Nurse1174042428
  6. Kendra Hutchinson, M.D.Hematology & Oncology Physician1922172527

Verify Robert T. O'Donnell in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G063398    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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Robert T. O'Donnell among 1,583 hematology & oncology physician records in California

Robert T. O'Donnell, M.D., PH.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 not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileNo · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2019 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

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

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

  1. Mehrad Abedi, M.D.Sacramento, CA 958171467459222
  2. Helen Chew, M.D.Sacramento, CA 958171801870142
  3. David Gandara, M.D.Sacramento, CA 958171528042587
  4. Richard Guy, M.D.Sacramento, CA 958171578545190
  5. Kit Lam, M.D., PH.D.Sacramento, CA 958171306829577
  6. Primo Lara, M.D.Sacramento, CA 958171972585743
  7. Derick Lau, M.D., PH.D.Sacramento, CA 958171801879077
  8. Jerry Powell, M.D.Sacramento, CA 958171780666198

Common questions

What is Robert T. O'Donnell, M.D., PH.D.'s NPI number?

Robert T. O'Donnell, M.D., PH.D.'s National Provider Identifier (NPI) is 1386627586, issued on Nov 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Robert T. O'Donnell, M.D., PH.D. located?

The NPPES record lists a practice address at 2279 45TH Street, Sacramento, CA, 95817. Phone: (916) 734-5959. Providers update this record themselves, so call before visiting.

How can I verify Robert T. O'Donnell, M.D., PH.D.'s license?

NPPES lists California license number G063398, 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.