Mark Christopher Johnson, PA-C

Individual provider Personal Emergency Response Attendant · NPI 1578658746

Mark Christopher Johnson, PA-C is a Physician Assistant in LA Jolla, California. Qualified in 1999, 27 years ago. Practices with Regents of the University of California, a 2,061-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Connecticut.

Years since qualifying: 27
Licensed in: CA, CT
In the registry since: 2006
Specialties on file: 2

What do these letters mean?

PA-C — Physician Assistant, Certified: A physician assistant who holds current national certification.

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Practice location Address checks out

9300 Campus Point Dr
LA Jolla, CA 92037-1300
Phone: (800) 926-8273

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

1725 Gentle Breeze Ln, Encinitas, CA 92024-1968 — (203) 257-9951

Specialties & licences

Physician Assistant (primary)	Taxonomy 363A00000X · Licence PA21728 (CA)
Personal Emergency Response Attendant	Taxonomy 146D00000X · Licence 000901 (CT)

Record details

NPI number	1578658746
Entity type	Individual (Type 1)
Gender	Male
Credentials	PA-C
Sole proprietor	No
NPI enumerated	October 4, 2006
Last updated in NPPES	February 4, 2025
Certification date	February 4, 2025

Medicare enrollment

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

Medicare specialty	PHYSICIAN ASSISTANT
Medical school	OTHER
Graduated	1999 (27 years in practice)
Group practice	Regents Of The University Of California — 2061 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Practice locations	3 on file with Medicare

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 patients	127
Services billed	173 a service is one billed item, such as a visit, a test or a procedure
Average patient age	76

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 Regents of the University of California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2061 clinicians in the practice; 12 are shown here.

Dr. Hossein Ansari, MD Neurology Physician · San Diego, CA
Shravan Dave, MD Gastroenterology Physician · San Diego, CA
Dr. Edward Keith Duran, MD Internal Medicine Physician · San Diego, CA
Dr. Gina Reggiardo Frugoni, MD Obstetrics & Gynecology Physician · LA Jolla, CA
Alexi Geevarghese Student in an Organized Health Care Education/Training Program · San Diego, CA
Jenique Brianne Keys Inpatient Obstetric Registered Nurse · LA Jolla, CA
Dr. Michael Tun Yin Lam, MDPHD Pulmonary Disease Physician · San Diego, CA
Dr. Joy Liau, MDPHD Diagnostic Radiology Physician · San Diego, CA
Dr. Ryan Ha Pham, MD Nuclear Medicine Physician · San Diego, CA
Christopher Toomey, MD, PHD Ophthalmology Physician · San Diego, CA
Kamila Barbara Zasowska, NP Nurse Practitioner · San Diego, CA
Sherry Zhang Hospitalist Physician · San Diego, CA