Herbert Del Rosario Icasiano, DO
Emergency Medicine Physician · Los Alamitos, CA
Herbert Del Rosario Icasiano, DO is an emergency medicine physician with a practice address in Los Alamitos, California, and NPI 1740772383, issued on May 30, 2018. Check the license (California 19631, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Herbert Del Rosario Icasiano
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 19631 CA
OS020260 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3751 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 598-1311
- Enumerated
- May 30, 2018
- Record last updated
- May 13, 2026
- Medicare enrollment
- Enrolled (PECOS I20221118001291); accepts Medicare assignment
- Medical or professional school
- William Carey University College Of Osteopathic Medicine, 2018
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 3751 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Moustafa Aboshady, M.D.Hospitalist Physician1003127655
- Denis Bolton, D.O.Diagnostic Radiology Physician1952493876
- George Bozeman, MDEmergency Medicine Physician1295771285
- Kirsten Calder, MDEmergency Medicine Physician1952330938
- Monica Choi, MDAnesthesiology Physician1578804506
- Benjamin Cowan, MDDiagnostic Radiology Physician1760465728
Verify Herbert Del Rosario Icasiano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 19631Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% more Medicare Part D claims than the average emergency medicine physician in 2024
328 Medicare Part D claims for 196 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Ibuprofen44 claims
- Cefpodoxime Proxetil21 claims
- Ondansetron Odt19 claims
- Cephalexin18 claims
- Amoxicillin-Clavulanate Potass16 claims
- Methocarbamol16 claims
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Regents OF The University OFOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Herbert Del Rosario Icasiano among 7,751 emergency medicine physician records in California
Herbert Del Rosario Icasiano, DO is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 81% of them.
- NPI issued2018 · 81% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2011 among the 4,560 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 emergency medicine physician records list a practice address in Los Alamitos
They are 19 of the 1,035 NPPES records with a practice address in Los Alamitos, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Alamitos → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- George Bozeman, MDLos Alamitos, CA 907201295771285
- Kirsten Calder, MDLos Alamitos, CA 907201952330938
- Monica Kumar, M.D,Los Alamitos, CA 907201700058963
- Mina Masri, D.O.Los Alamitos, CA 907201750390993
- Gregory Moreno, MDLos Alamitos, CA 907201245249481
- Michael Perlman, M.D.Los Alamitos, CA 907201144256355
- Charles Rennie, MDLos Alamitos, CA 907201295767523
- Ivan Rokos, MDLos Alamitos, CA 907201184681991
Common questions
What is Herbert Del Rosario Icasiano, DO's NPI number?
Herbert Del Rosario Icasiano, DO's National Provider Identifier (NPI) is 1740772383, issued on May 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Herbert Del Rosario Icasiano, DO located?
The NPPES record lists a practice address at 3751 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 598-1311. Providers update this record themselves, so call before visiting.
How can I verify Herbert Del Rosario Icasiano, DO's license?
NPPES lists California license number 19631, 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 Herbert Del Rosario Icasiano, DO prescribe under Medicare Part D?
In 2024, Herbert Del Rosario Icasiano, DO had 328 Medicare Part D claims for 196 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Herbert Del Rosario Icasiano, DO's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.