Lloyd Stuart Nagasawa, M.D.
Hematology & Oncology Physician · Mission Viejo, CA
Lloyd Stuart Nagasawa, M.D. is a hematology & oncology physician with a practice address in Mission Viejo, California, and NPI 1487647335, issued on Aug 25, 2005. Check the license (California G50164, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Lloyd Stuart Nagasawa
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G50164 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26691 Plaza, Mission Viejo, CA 92691
- Phone
- (949) 347-0600
- Enumerated
- Aug 25, 2005
- Record last updated
- Dec 19, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (949) 347-0746
- Entity
- Type 1 · individual
Also registered at 26691 Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel BunettaPhysical Therapy Assistant1366144354
- Arpi MelkonianPsychologist1952489155
- Viken Melkonian, M.D.Specialist1932154721
- George Miranda, MDHematology & Oncology Physician1558545038
- Fred Nour, MDNeurology Physician1881629350
- Hamid Salehi, MDNeurology Physician1992733257
Verify Lloyd Stuart Nagasawa in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G50164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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.
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Lloyd Stuart Nagasawa, M.D.'s NPI number?
Lloyd Stuart Nagasawa, M.D.'s National Provider Identifier (NPI) is 1487647335, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lloyd Stuart Nagasawa, M.D. located?
The NPPES record lists a practice address at 26691 Plaza, Mission Viejo, CA, 92691. Phone: (949) 347-0600. Providers update this record themselves, so call before visiting.
How can I verify Lloyd Stuart Nagasawa, M.D.'s license?
NPPES lists California license number G50164, 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.
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.