Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Herbert Del Rosario Icasiano, DO

Individual provider Emergency Medicine Physician · NPI 1740772383

Dr. Herbert Del Rosario Icasiano, DO practises Emergency Medicine in Los Alamitos, California. Graduated from William Carey University College of Osteopathic Medicine in 2018, 8 years ago. Practices with Regents of the University Of, a 125-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Pennsylvania.

Years since qualifying
8
Trained at
William Carey University College of Osteopathic Medicine
Licensed in
CA, PA
In the registry since
2018
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3751 Katella Ave
Los Alamitos, CA 90720-3113
Phone: (562) 598-1311
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 707 E Main St, Middletown, NY 10940-2650 — (845) 333-6333

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 19631 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence OS020260 (PA)

Record details

NPI number1740772383
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 30, 2018
Last updated in NPPESMay 13, 2026
Certification dateMay 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWILLIAM CAREY UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2018 (8 years in practice)
Group practice Regents Of The University Of — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients322
Services billed 712 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Regents of the University Of

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 125 clinicians in the practice; 12 are shown here.

Other providers in Los Alamitos