LEIF T. CANFIELD MD
NPI 1891873386
Emergency Medicine in Fremont, CA
About Leif T. Canfield Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEIF T. CANFIELD MD (NPI 1891873386) is an individual emergency medicine provider in Fremont, California, licensed in California (A94364) and active in the NPI registry since November 2006. 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)
Leif T. Canfield Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Leif Canfield reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 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
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 94538 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
FREMONT, CA 94538
FREMONT, CA 94538
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 Leif Canfield's NPI number?
The NPI number for Leif Canfield is 1891873386. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Leif Canfield located?
Leif Canfield practices at 39400 Paseo Padre Pkwy, Fremont, CA 94538. The listed phone number is (510) 795-3000.
What is Leif Canfield's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Leif Canfield enrolled in Medicare?
Yes. Leif Canfield is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Leif Canfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leif Canfield reassigns Medicare benefits to Permanente Medical Group Inc (Redwood City, CA). The 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 Leif Canfield'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 Leif Canfield was last updated on December 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Leif T. Canfield, MD · NPI 1891873386
Emergency Medicine physician in Fremont, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1891873386 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A94364 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 39400 PASEO PADRE PKWY, Fremont, CA 94538-2310
- **Phone:** (510) 795-3000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 9, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1891873386) · Data from the CMS NPPES public registry.