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

Caroline Nguyen, MD

Individual provider Emergency Medicine Physician · NPI 1104934256

Caroline Nguyen, MD practises Emergency Medicine in Sacramento, California. Qualified in 1998, 28 years ago. Practices with Vituity-California Observation Services PC, a 84-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
28
Licensed in
CA
In the registry since
2006
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

2801 'L' St
Sacramento, CA 95816 Not confirmed with CMS for 10 years — call before visiting
Phone: (916) 733-3003
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A77132 (CA)

Record details

NPI number1104934256
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 28, 2006
Last updated in NPPESJuly 19, 2016

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Vituity-California Observation Services Pc — 84 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 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 patients268
Services billed 480 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Vituity-California Observation Services PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 84 clinicians in the practice; 12 are shown here.

Other providers in Sacramento