Caroline Nguyen, MD
Emergency Medicine Physician · Sacramento, CA
Caroline Nguyen, MD is an emergency medicine physician with a practice address in Sacramento, California, and NPI 1104934256, issued on Aug 28, 2006. Check the license (California A77132, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Caroline Nguyen
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A77132 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2801 'L' Street, Sacramento, CA 95816
- Phone
- (916) 733-3003
- Enumerated
- Aug 28, 2006
- Record last updated
- Jul 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 00A771320 CA
- Medicare enrollment
- Enrolled (PECOS I20100108000240); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2801 'L' Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alvaro Aguirre, PAMedical Physician Assistant1700994597
- Bruce Gordon, MDEmergency Medicine Physician1760590699
- Gary Hallam, MDEmergency Medicine Physician1508974536
- Robert Kane, MDEmergency Medicine Physician1629186648
- Theodore Muller, MDEmergency Medicine Physician1740398502
- John Nations, MDEmergency Medicine Physician1942318852
Verify Caroline Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A77132Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average emergency medicine physician in 2024
173 Medicare Part D claims for 107 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Cephalexin16 claims
- Hydrocodone-Acetaminophen11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Vituity-California Observation Services PCRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Caroline Nguyen among 7,751 emergency medicine physician records in California
Caroline Nguyen, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1998 · median 2011 among the 4,560 with a school on file
- Record last updated2016 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
369 emergency medicine physician records list a practice address in Sacramento
They are 369 of the 33,083 NPPES records with a practice address in Sacramento, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Sacramento → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Nathan Beckerman, M.D.Sacramento, CA 958161952500977
- Christian Feinauer, MDSacramento, CA 958161629136635
- Bruce Gordon, MDSacramento, CA 958161760590699
- Gary Hallam, MDSacramento, CA 958161508974536
- Robert Kane, MDSacramento, CA 958161629186648
- Aimee Moulin, MDSacramento, CA 958161689865677
- Theodore Muller, MDSacramento, CA 958161740398502
- John Nations, MDSacramento, CA 958161942318852
Common questions
What is Caroline Nguyen, MD's NPI number?
Caroline Nguyen, MD's National Provider Identifier (NPI) is 1104934256, issued on Aug 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Nguyen, MD located?
The NPPES record lists a practice address at 2801 'L' Street, Sacramento, CA, 95816. Phone: (916) 733-3003. Providers update this record themselves, so call before visiting.
How can I verify Caroline Nguyen, MD's license?
NPPES lists California license number A77132, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Caroline Nguyen, MD prescribe under Medicare Part D?
In 2024, Caroline Nguyen, MD had 173 Medicare Part D claims for 107 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Caroline Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.