GREGORY L MERRITT CRNA
NPI 1144521162
Nurse Anesthetist, Certified Registered in Knoxville, TN
About Gregory L Merritt Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY L MERRITT CRNA (NPI 1144521162) is an individual nurse anesthetist, certified registered in Knoxville, Tennessee, licensed in Tennessee (17525) and active in the NPI registry since November 2010. He is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 4
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
Gregory L Merritt Crna 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 Gregory Merritt reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Knoxville, TN 37916
- Reassigned Medicare billing, Tennessee enrollment
- Medicare enrollment name: American Anesthesiology Of Tennessee PC
- 959 clinicians in this Medicare group
Oak Ridge, TN 37830
- Reassigned Medicare billing, Tennessee enrollment
- 289 clinicians in this Medicare group
Nashville, TN 37203
- Reassigned Medicare billing, Tennessee enrollment
- 44 clinicians in this Medicare group
Wilkes Barre, PA 18764
- Reassigned Medicare billing, Kentucky enrollment
- 12 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37916 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
KNOXVILLE, TN 37916
KNOXVILLE, TN 37916
KNOXVILLE, TN 37916
KNOXVILLE, TN 37916
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 Merritt's NPI number?
The NPI number for Gregory Merritt is 1144521162. It was assigned to this individual provider in the NPPES registry on November 8, 2010.
Where is Gregory Merritt located?
Gregory Merritt practices at 501 20th St Ste 606 Anesthesia Department, Knoxville, TN 37916. The listed phone number is (865) 546-8040.
What is Gregory Merritt's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Gregory Merritt enrolled in Medicare?
Yes. Gregory Merritt 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 Gregory Merritt's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Merritt reassigns Medicare benefits to 4 organizations: American Anesthesiology Of Tennessee, P.C. (Knoxville, TN), Covenant Anesthesia Group, PC (Oak Ridge, TN), Ddec Anesthesia, LLC (Nashville, TN) and 360 Anesthesia PLLC (Wilkes Barre, PA). 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 Gregory Merritt'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 Merritt was last updated on August 30, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Gregory L Merritt, CRNA · NPI 1144521162
Nurse Anesthetist, Certified Registered physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since November 8, 2010.
## Identity
- **NPI:** 1144521162 (Entity type: Individual)
- **Enumerated:** November 8, 2010
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 17525 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 501 20TH ST STE 606, ANESTHESIA DEPARTMENT, Knoxville, TN 37916
- **Phone:** (865) 546-8040
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): American Anesthesiology Of Tennessee, P.C. (NPI 1245279777, Knoxville, TN); Covenant Anesthesia Group, PC (NPI 1639148117, Oak Ridge, TN); Ddec Anesthesia, LLC (NPI 1629439971, Nashville, TN); 360 Anesthesia PLLC (NPI 1811637366, Wilkes Barre, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** August 30, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1144521162) · Data from the CMS NPPES public registry.