Clifford J. Merlo, MD
Radiation Oncology Physician · Lawndale, CA
Clifford J. Merlo, MD is a radiation oncology physician with a practice address in Lawndale, California, and NPI 1427198597, issued on Feb 7, 2007. Check the license (California G51280, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Clifford J. Merlo
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- G51280 CA
Self-reported in NPPES; status is on the state search - Practice location
- 14608 Hawthorne Blvd, Lawndale, CA 90260
- Phone
- (310) 978-4970
- Enumerated
- Feb 7, 2007
- Record last updated
- Feb 17, 2026
- Fax
- (310) 978-8668
- Medicare enrollment
- Enrolled (PECOS I20070215000444); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 14608 Hawthorne Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennie Cho-Lim, M.D.Radiation Oncology Physician1235372798
- Lesley Lawrenson, M.D., PH.D.Radiation Oncology Physician1457691503
- Janice Rha, MDSpecialist1750302261
- David Rickles, MDRadiation Oncology Physician1700926862
- Chad Sila, M.D.Radiation Oncology Physician1477744811
Verify Clifford J. Merlo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51280Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average radiation oncology physician in 2024
14 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Chad Sila M D A Professional CorporationLawndale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
5 radiation oncology physician records list a practice address in Lawndale
They are 5 of the 270 NPPES records with a practice address in Lawndale, and 735 radiation oncology physician records in California.
All 5 in Lawndale → All 735 in California → Every provider in Lawndale →
Other radiation oncology physician records in California
- Christina Abel, NURSE PRACTITIONEROrange, CA1033638911
- Jonathan Abelson, M.D.Thousand Oaks, CA1730348053
- Roy Abendroth, MDSan Francisco, CA1811988421
- Sunil Advani, M.D.La Jolla, CA1669649844
- Faisal Ahmed, MDStanford, CA1427314855
- Eugene Ahn, MDSimi Valley, CA1912999533
- Matthew Allen, MDRedding, CA1235301714
- Zahora Ally, MDAntioch, CA1306839915
- Munther Alqaisi, M.D.San Bernardino, CA1356454300
- Alessandra Amadeo, MDTorrance, CA1225011034
Common questions
What is Clifford J. Merlo, MD's NPI number?
Clifford J. Merlo, MD's National Provider Identifier (NPI) is 1427198597, issued on Feb 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Clifford J. Merlo, MD located?
The NPPES record lists a practice address at 14608 Hawthorne Blvd, Lawndale, CA, 90260. Phone: (310) 978-4970. Providers update this record themselves, so call before visiting.
How can I verify Clifford J. Merlo, MD's license?
NPPES lists California license number G51280, 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.
How much does Clifford J. Merlo, MD prescribe under Medicare Part D?
In 2024, Clifford J. Merlo, MD had 14 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.