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

Gregory L Peterfreund, MD, PHD

Individual provider Anesthesiology Physician · NPI 1134532203

Gregory L Peterfreund, MD, PHD practises Anesthesiology in Sacramento, California. Graduated from Perelman School of Med at the University of Pennsylvania in 2014, 12 years ago. Practices with Regents of the Univ of Ca, a 1,578-clinician group and accepts Medicare assignment. Licensed in California and Massachusetts.

Years since qualifying
12
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA, MA
In the registry since
2014
Specialties on file
2
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 Ste 1200
Sacramento, CA 95817-1460
Phone: (916) 734-4611
Fax: (916) 734-2975
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

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A153364 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence L-259259 (MA)

Record details

NPI number1134532203
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 6, 2014
Last updated in NPPESJanuary 1, 2024
Certification dateJanuary 1, 2024

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2014 (12 years in practice)
Group practice Regents Of The Univ Of Ca — 1578 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 patients144
Services billed 181 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • University Of California Davis Medical Center Hospital · Sacramento, CA

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