DR. MICHELLE DINH NGUYEN M.D.
NPI 1043410681
Anesthesiology in San Francisco, CA
About Dr. Michelle Dinh Nguyen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MICHELLE DINH NGUYEN M.D. (NPI 1043410681) is an individual anesthesiology provider in San Francisco, California, licensed in California (A119712) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Michelle Dinh Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
11Medicare enrollment records show Michelle Nguyen reassigns Medicare billing to 11 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 723 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
San Ramon, CA 94583
- Reassigned Medicare billing, California enrollment
- 176 clinicians in this Medicare group
Northridge, CA 91325
- Reassigned Medicare billing, California enrollment
- 23 clinicians in this Medicare group
Glendale, CA 91202
- Reassigned Medicare billing, California enrollment
- 58 clinicians in this Medicare group
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 86 clinicians in this Medicare group
Los Angeles, CA 90017
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Duarte, CA 91010
- Reassigned Medicare billing, California enrollment
- 1,335 clinicians in this Medicare group
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 107 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 7
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94143
SAN FRANCISCO, CA 94143
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Michelle Nguyen's NPI number?
The NPI number for Michelle Nguyen is 1043410681. It was assigned to this individual provider in the NPPES registry on July 23, 2007. The provider is also known as Dr. Michelle Diep Dinh MD Amc.
Where is Michelle Nguyen located?
Michelle Nguyen practices at 521 Parnassus Ave Fl 4, San Francisco, CA 94143. The listed phone number is (415) 514-7952.
What is Michelle Nguyen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Michelle Nguyen enrolled in Medicare?
Yes. Michelle Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Michelle Nguyen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Nguyen reassigns Medicare benefits to 11 organizations: University Anesthesia Medical Group (San Francisco, CA), University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Premier Anesthesia Of California, PC (San Ramon, CA), Valley Anesthesia Physicians Medical Group, Inc (Northridge, CA) and 6 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michelle Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michelle Nguyen accept?
Health plans from Blue Cross and Blue Shield of Texas and UnitedHealthcare list Michelle Nguyen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Michelle Nguyen was last updated on November 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Michelle Dinh Nguyen, M.D. · NPI 1043410681
Anesthesiology physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since July 23, 2007.
## Identity
- **NPI:** 1043410681 (Entity type: Individual)
- **Enumerated:** July 23, 2007
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A119712 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 521 PARNASSUS AVE FL 4, San Francisco, CA 94143-2206
- **Phone:** (415) 514-7952 · **Fax:** (415) 353-9163
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 11 organizations under Medicare reassignment (form CMS-855R): University Anesthesia Medical Group (NPI 1528137296, San Francisco, CA); University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Premier Anesthesia Of California, PC (NPI 1770691859, San Ramon, CA); Valley Anesthesia Physicians Medical Group, Inc (NPI 1649895186, Northridge, CA); and 6 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** November 4, 2025
- **Other identifiers:** Medicaid 1043410681 (CA); Medicaid 1043410681 (NV)
---
Source: [NPI Profile](https://npiprofile.com/npi/1043410681) · Data from the CMS NPPES public registry.