DR. NICOLAS SAWYER M.D.
NPI 1033470760
Emergency Medicine in Sonoma, CA
About Dr. Nicolas Sawyer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NICOLAS SAWYER M.D. (NPI 1033470760) is an individual emergency medicine provider in Sonoma, California, licensed in North Carolina (182876) and active in the NPI registry since May 2012. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Nicolas Sawyer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
5Medicare enrollment records show Nicolas Sawyer reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sonoma, CA 95476
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Napa, CA 94558
- Reassigned Medicare billing, California enrollment
- 53 clinicians in this Medicare group
Novato, CA 94945
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1548216260 (California)
- 2,323 clinicians in this Medicare group
Davis, CA 95616
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Davis, CA 95616
- Reassigned Medicare billing, California enrollment
- 918 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 4
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95476 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Nicolas Sawyer's NPI number?
The NPI number for Nicolas Sawyer is 1033470760. It was assigned to this individual provider in the NPPES registry on May 29, 2012.
Where is Nicolas Sawyer located?
Nicolas Sawyer practices at 347 Andrieux St, Sonoma, CA 95476. The listed phone number is (707) 935-5000.
What is Nicolas Sawyer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Nicolas Sawyer enrolled in Medicare?
Yes. Nicolas Sawyer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nicolas Sawyer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicolas Sawyer reassigns Medicare benefits to 5 organizations: Sonoma Valley Emergency Physicians Medical Group, Inc (Sonoma, CA), Napa Valley Emergency Medical Group (Napa, CA), Cep America - California (Novato, CA), Regents Of The Univ Of Ca (Davis, CA) and Regents Of The University Of California (Davis, CA). 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 Nicolas Sawyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Nicolas Sawyer was last updated on September 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.