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

James Littlejohn, MD, PHD

Individual provider Anesthesiology Physician · NPI 1609197250

James Littlejohn, MD, PHD practises Anesthesiology in Sacramento, California. Graduated from Texas a & M University System, Hsc, College of Medicine in 2010, 16 years ago. Practices with Regents of the Univ of Ca, a 1,578-clinician group and accepts Medicare assignment. Licensed in California and New York.

Years since qualifying
16
Trained at
Texas a & M University System, Hsc, College of Medicine
Licensed in
CA, NY
In the registry since
2010
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

4150 V St
Sacramento, CA 95817-1460
Phone: (916) 734-5028
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Critical Care Medicine (Anesthesiology) Physician (primary) Taxonomy 207LC0200X · Licence A136653 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence A136653 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 293473 (NY)
Critical Care Medicine (Anesthesiology) Physician Taxonomy 207LC0200X · Licence 293473 (NY)

Record details

NPI number1609197250
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 17, 2010
Last updated in NPPESSeptember 16, 2022
Certification dateSeptember 16, 2022

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolTEXAS A & M UNIVERSITY SYSTEM, HSC, COLLEGE OF MEDICINE
Graduated 2010 (16 years in practice)
Group practice Regents Of The Univ Of Ca — 1578 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 patients117
Services billed 151 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Colleagues at Regents of the Univ of Ca

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1578 clinicians in the practice; 12 are shown here.

Other providers in Sacramento