DR. GREGORY LEWIS HADDOCK D.C.
NPI 1679775563
Chiropractor in Salt Lake City, UT
About Dr. Gregory Lewis Haddock D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREGORY LEWIS HADDOCK D.C. (NPI 1679775563) is an individual chiropractor in Salt Lake City, Utah, licensed in Utah (5770376-1202) and active in the NPI registry since June 2007. He is a graduate of Cleveland Chiropractic College - Los Angeles (2003).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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. Gregory Lewis Haddock 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 Gregory Haddock reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Salt Lake City, UT 84107
- Reassigned Medicare billing, Utah enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SALT LAKE CITY, UT 84107
SALT LAKE CITY, UT 84107
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 Gregory Haddock's NPI number?
The NPI number for Gregory Haddock is 1679775563. It was assigned to this individual provider in the NPPES registry on June 3, 2007.
Where is Gregory Haddock located?
Gregory Haddock practices at 715 E 3900 S Suite 109, Salt Lake City, UT 84107. The listed phone number is (801) 268-4993.
What is Gregory Haddock's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Gregory Haddock enrolled in Medicare?
Yes. Gregory Haddock 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 Gregory Haddock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Haddock reassigns Medicare benefits to Mt. Olympus Clinic Of Chiropractic Corporation (Salt Lake City, UT). 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 Gregory Haddock'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 Gregory Haddock was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Gregory Lewis Haddock, D.C. · NPI 1679775563
Chiropractor provider in Salt Lake City, Utah. Individual provider, active in the CMS NPPES registry since June 3, 2007.
## Identity
- **NPI:** 1679775563 (Entity type: Individual)
- **Enumerated:** June 3, 2007
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** 5770376-1202 (Utah)
- **Sole proprietor:** No
## Practice location
- **Address:** 715 E 3900 S, SUITE 109, Salt Lake City, UT 84107-2182
- **Phone:** (801) 268-4993
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Mt. Olympus Clinic Of Chiropractic Corporation (NPI 1043485188, Salt Lake City, UT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Cleveland Chiropractic College - Los Angeles, class of 2003
## Record status
- **NPPES last updated:** July 9, 2007
- **Other identifiers:** Medicare UPIN U98502 (UT)
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Source: [NPI Profile](https://npiprofile.com/npi/1679775563) · Data from the CMS NPPES public registry.