DR. JOHN SHELDON WILLIAMS IV D.C.
NPI 1447259130
Chiropractor in Tucson, AZ
About Dr. John Sheldon Williams Iv D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN SHELDON WILLIAMS IV D.C. (NPI 1447259130) is an individual chiropractor in Tucson, Arizona, licensed in Arizona (04623) and active in the NPI registry since July 2005. He is a graduate of Palmer College Chiropractic - Davenport (1989).
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. John Sheldon Williams Iv D.c. 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 Reassignment
Medicare enrollment records show John Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tucson, AZ 85716
- Reassigned Medicare billing, Arizona enrollment
- Medicare enrollment name: John S Williams D.C. PC
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.
Other Providers at the Same Location NPPES 3
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 John Williams's NPI number?
The NPI number for John Williams is 1447259130. It was assigned to this individual provider in the NPPES registry on July 15, 2005.
Where is John Williams located?
John Williams practices at 2606 E Grant Rd, Tucson, AZ 85716. The listed phone number is (520) 325-0161.
What is John Williams's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is John Williams enrolled in Medicare?
Yes. John Williams 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 organization bills Medicare for John Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Williams reassigns Medicare benefits to John S. Williams D.C. P.C. (Tucson, AZ). 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 John Williams'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 John Williams was last updated on May 8, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. John Sheldon Williams IV, D.C. · NPI 1447259130
Chiropractor provider in Tucson, Arizona. Individual provider, active in the CMS NPPES registry since July 15, 2005.
## Identity
- **NPI:** 1447259130 (Entity type: Individual)
- **Enumerated:** July 15, 2005
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 04623 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2606 E GRANT RD, Tucson, AZ 85716-2714
- **Phone:** (520) 325-0161 · **Fax:** (520) 325-0914
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** John S. Williams D.C. P.C. (NPI 1760724728, Tucson, AZ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Palmer College Chiropractic - Davenport, class of 1989
## Record status
- **NPPES last updated:** May 8, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1447259130) · Data from the CMS NPPES public registry.