Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Nixon, MD

Individual provider Pediatrics Physician · NPI 1720465586

John Nixon, MD practises Internal Medicine in Los Angeles, California. Graduated from Rush Medical College of Rush University in 2015, 11 years ago. Practices with County of Los Angeles, a 390-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
11
Trained at
Rush Medical College of Rush University
Licensed in
CA
In the registry since
2015
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1200 N State St CT-A7D
Los Angeles, CA 90033-1029
Phone: (323) 226-7556
Fax: (323) 226-2657
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A145812 (CA)
Pediatrics Physician Taxonomy 208000000X · Licence A145812 (CA)

Record details

NPI number1720465586
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 30, 2015
Last updated in NPPESDecember 29, 2019
Certification dateDecember 29, 2019

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 2015 (11 years in practice)
Group practice County Of Los Angeles — 390 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients93
Services billed 388 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

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.

  • Lac/Olive View-Ucla Medical Center Hospital · Sylmar, CA

Colleagues at County of Los Angeles

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 390 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles