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

Christopher Vaughn Holland, MD

Individual provider Infectious Disease Physician · NPI 1063492031

Christopher Vaughn Holland, MD is registered under Infectious Disease in San Luis Obispo, California. Graduated from University of California, Irvine, California College of Medicine in 2002, 24 years ago. Practices with J Trees Ritter, DO, Inc, a 3-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
24
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1551 Bishop St Ste 250
San Luis Obispo, CA 93401-4661
Phone: (805) 540-0689
Fax: (805) 541-4376
Show map & directions

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence A84573 (CA)

Record details

NPI number1063492031
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 18, 2006
Last updated in NPPESMay 12, 2023
Certification dateMay 12, 2023

Medicare enrollment

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

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice J Trees Ritter, Do, Inc — 3 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 patients296
Services billed 1,166 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 J Trees Ritter, DO, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3 clinicians in the practice; 1 are shown here.

Other providers in San Luis Obispo