DR. ALAN DAVID COOK DC
NPI 1093515454
Chiropractor in Middlefield, OH
About Dr. Alan David Cook Dc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALAN DAVID COOK DC (NPI 1093515454) is an individual chiropractor in Middlefield, Ohio, licensed in Ohio (DC-05439) and active in the NPI registry since March 2025.
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)
Dr. Alan David Cook Dc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Alan Cook reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ada, OH 45810
- Reassigned Medicare billing, Ohio enrollment
- 2 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.
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 Alan Cook's NPI number?
The NPI number for Alan Cook is 1093515454. It was assigned to this individual provider in the NPPES registry on March 15, 2025.
Where is Alan Cook located?
Alan Cook practices at 8856 State Route 534, Middlefield, OH 44062. The listed phone number is (330) 646-4522.
What is Alan Cook's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is Alan Cook enrolled in Medicare?
Yes. Alan Cook is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Alan Cook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alan Cook reassigns Medicare benefits to Gillfillan Chiropractic LLC (Ada, OH). 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 Alan Cook'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 Alan Cook was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. Alan David Cook, DC · NPI 1093515454
Chiropractor provider in Middlefield, Ohio. Individual provider, active in the CMS NPPES registry since March 15, 2025.
## Identity
- **NPI:** 1093515454 (Entity type: Individual)
- **Enumerated:** March 15, 2025
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** DC-05439 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 8856 STATE ROUTE 534, Middlefield, OH 44062-9581
- **Phone:** (330) 646-4522
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Gillfillan Chiropractic LLC (NPI 1003150491, Ada, OH), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1093515454) · Data from the CMS NPPES public registry.