TIMOTHY BAUER DUNCAN MD
NPI 1013908227
Emergency Medicine in San Francisco, CA
About Timothy Bauer Duncan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TIMOTHY BAUER DUNCAN MD (NPI 1013908227) is an individual emergency medicine provider in San Francisco, California, licensed in California (G87083) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Geisel School Of Medicine At Dartmouth (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Timothy Bauer Duncan Md 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
2Medicare enrollment records show Timothy Duncan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94109
- Reassigned Medicare billing, California enrollment
- 155 clinicians in this Medicare group
Orinda, CA 94563
- Reassigned Medicare billing, California enrollment
- 4,479 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 94115 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.
SAN FRANCISCO, CA 94115
SAN FRANCISCO, CA 94115
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 Timothy Duncan's NPI number?
The NPI number for Timothy Duncan is 1013908227. It was assigned to this individual provider in the NPPES registry on November 4, 2005.
Where is Timothy Duncan located?
Timothy Duncan practices at 2333 Buchanan St, San Francisco, CA 94115. The listed phone number is (209) 342-2300.
What is Timothy Duncan's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Timothy Duncan enrolled in Medicare?
Yes. Timothy Duncan 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 Timothy Duncan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Timothy Duncan reassigns Medicare benefits to 2 organizations: San Francisco Emergency Medical Associates (San Francisco, CA) and Sutter Bay Medical Foundation (Orinda, 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 Timothy Duncan'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 Timothy Duncan was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Timothy Bauer Duncan, MD · NPI 1013908227
Emergency Medicine physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since November 4, 2005.
## Identity
- **NPI:** 1013908227 (Entity type: Individual)
- **Enumerated:** November 4, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** G87083 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2333 BUCHANAN ST, San Francisco, CA 94115-1925
- **Phone:** (209) 342-2300 · **Fax:** (209) 524-4240
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): San Francisco Emergency Medical Associates (NPI 1134110661, San Francisco, CA); Sutter Bay Medical Foundation (NPI 1366898538, Orinda, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Geisel School Of Medicine At Dartmouth, class of 1994
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 00G870830 (CA); Other 00G870830 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1013908227) · Data from the CMS NPPES public registry.