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

Nicholas Kleen

Individual provider Physician Assistant · NPI 1750730651

Nicholas Kleen is a Physician Assistant in Rancho Santa Margarita, California. Qualified in 2016, 10 years ago. Practices with Southern California Emergency Medicine, a 44-clinician group, accepts Medicare assignment and offers telehealth.

Years since qualifying
10
In the registry since
2016
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Practice location Address checks out

34 Calle Maria
Rancho Santa Margarita, CA 92688-5440 Not confirmed with CMS for 10 years — call before visiting
Phone: (949) 750-6110
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X

Record details

NPI number1750730651
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJune 10, 2016
Last updated in NPPESJune 10, 2016

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Southern California Emergency Medicine — 44 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients90
Services billed 96 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

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.

Colleagues at Southern California Emergency Medicine

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 44 clinicians in the practice; 12 are shown here.

Other providers in Rancho Santa Margarita