DR. JUSTIN JOHNNIE COOK DO
NPI 1215455464
Anesthesiology in Nashville, TN
About Dr. Justin Johnnie Cook Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JUSTIN JOHNNIE COOK DO (NPI 1215455464) is an individual anesthesiology provider in Nashville, Tennessee, licensed in Tennessee (5210) and active in the NPI registry since September 2017. He is enrolled in Medicare PECOS, is affiliated with Tristar Centennial Medical Center, and maintains a secondary practice location in Hendersonville.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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. Justin Johnnie Cook Do 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
2Medicare enrollment records show Justin Cook reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Nashville, TN 37232
- Reassigned Medicare billing, Tennessee enrollment
- 4,711 clinicians in this Medicare group
Nashville, TN 37203
- Reassigned Medicare billing, Tennessee enrollment
- Medicare enrollment name: Anesthesia Medical Group, P.C.
- 757 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 9
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Tristar Centennial Medical Center
Acute Care Hospitals · Nashville, TNTristar Hendersonville Medical Center
Acute Care Hospitals · Hendersonville, TNOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
NASHVILLE, TN 37232
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 Justin Cook's NPI number?
The NPI number for Justin Cook is 1215455464. It was assigned to this individual provider in the NPPES registry on September 7, 2017.
Where is Justin Cook located?
Justin Cook practices at 3601 The Vanderbilt Clinic Ave, Nashville, TN 37232. The listed phone number is (615) 322-5000.
What is Justin Cook's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Justin Cook enrolled in Medicare?
Yes. Justin Cook 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 Justin Cook's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Justin Cook reassigns Medicare benefits to 2 organizations: Vanderbilt University Medical Center (Nashville, TN) and Anesthesia Medical Group, PC (Nashville, TN). 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 Justin Cook's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Justin Cook accept?
Health plans from Alliant Health Plans, Inc., Cigna Healthcare, Oscar Health and Oscar Insurance Company list Justin Cook as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Justin Cook affiliated with any hospitals?
According to CMS data, Justin Cook is affiliated with Tristar Centennial Medical Center and Tristar Hendersonville Medical Center.
When was this NPI record last updated?
The NPPES record for Justin Cook was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Justin Johnnie Cook, DO · NPI 1215455464
Anesthesiology physician in Nashville, Tennessee. Individual provider, active in the CMS NPPES registry since September 7, 2017.
## Identity
- **NPI:** 1215455464 (Entity type: Individual)
- **Enumerated:** September 7, 2017
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 5210 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 3601 THE VANDERBILT CLINIC AVE, Nashville, TN 37232-5100
- **Phone:** (615) 322-5000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Vanderbilt University Medical Center (NPI 1104202761, Nashville, TN); Anesthesia Medical Group, PC (NPI 1215932413, Nashville, TN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Arizona College Of Osteopathic Medicine Mid Western University, class of 2023
## Record status
- **NPPES last updated:** July 31, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1215455464) · Data from the CMS NPPES public registry.