DR. WILLIAM MICHAEL COLLINS D.O.
NPI 1417361973
Family Medicine - Sports Medicine in Davis, CA
About Dr. William Michael Collins D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM MICHAEL COLLINS D.O. (NPI 1417361973) is an individual sports medicine provider in Davis, California, licensed in California (20A15413) and active in the NPI registry since June 2014. He is enrolled in Medicare PECOS and is a graduate of Other (2014).
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 and accepts Medicare assignment
Dr. William Michael Collins D.o. 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
4Medicare enrollment records show William Collins reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
San Diego, CA 92111
- Reassigned Medicare billing, California enrollment
- 1,233 clinicians in this Medicare group
San Diego, CA 92109
- Reassigned Medicare billing, California enrollment
- 1,100 clinicians in this Medicare group
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 526 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95618 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 William Collins's NPI number?
The NPI number for William Collins is 1417361973. It was assigned to this individual provider in the NPPES registry on June 12, 2014.
Where is William Collins located?
William Collins practices at 1955 Cowell Blvd, Davis, CA 95618. The listed phone number is (530) 757-7100.
What is William Collins's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Sports Medicine, with taxonomy code 207QS0010X.
Is William Collins enrolled in Medicare?
Yes. William Collins 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 William Collins's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Collins reassigns Medicare benefits to 4 organizations: Permanente Medical Group Inc (Vallejo, CA), Sharp Rees-Stealy Medical Group, Inc (San Diego, CA), Family Health Centers Of San Diego, Inc (San Diego, CA) and Regents Of The University Of California (San Diego, 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 William Collins'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 William Collins was last updated on February 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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. William Michael Collins, D.O. · NPI 1417361973
Sports Medicine physician in Davis, California. Individual provider, active in the CMS NPPES registry since June 12, 2014.
## Identity
- **NPI:** 1417361973 (Entity type: Individual)
- **Enumerated:** June 12, 2014
- **Primary specialty:** Family Medicine - Sports Medicine · taxonomy 207QS0010X
- **State license:** 20A15413 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1955 COWELL BLVD, Davis, CA 95618-6325
- **Phone:** (530) 757-7100
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1336222397, Vallejo, CA); Sharp Rees-Stealy Medical Group, Inc (NPI 1285616177, San Diego, CA); Family Health Centers Of San Diego, Inc (NPI 1386689701, San Diego, CA); Regents Of The University Of California (NPI 1003934803, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** February 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1417361973) · Data from the CMS NPPES public registry.