GREGORY WILLIAM HAGOPIAN CRNA
NPI 1033159983
Nurse Anesthetist, Certified Registered in Knoxville, TN
About Gregory William Hagopian Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY WILLIAM HAGOPIAN CRNA (NPI 1033159983) is an individual nurse anesthetist, certified registered in Knoxville, Tennessee, licensed in Tennessee (9197) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with King's Daughters' Medical Center, and maintains a secondary practice location in Wilmington.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 5
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 William Hagopian 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
3Medicare enrollment records show Gregory Hagopian reassigns Medicare billing to 3 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
Prestonsburg, KY 41653
- Reassigned Medicare billing, Kentucky enrollment
- 531 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
King's Daughters' Medical Center
Acute Care Hospitals · Ashland, KYPhysician 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 20
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
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 Hagopian's NPI number?
The NPI number for Gregory Hagopian is 1033159983. It was assigned to this individual provider in the NPPES registry on June 8, 2006.
Where is Gregory Hagopian located?
Gregory Hagopian practices at 501 20th St Suite 606, Knoxville, TN 37916. The listed phone number is (865) 546-8040.
What is Gregory Hagopian's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Gregory Hagopian enrolled in Medicare?
Yes. Gregory Hagopian 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 Hagopian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Hagopian reassigns Medicare benefits to 3 organizations: American Anesthesiology Of Tennessee, P.C. (Knoxville, TN), Covenant Anesthesia Group, PC (Oak Ridge, TN) and Kings Daughters Medical Specialties Inc (Prestonsburg, KY). 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 Hagopian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Gregory Hagopian affiliated with any hospitals?
According to CMS data, Gregory Hagopian is affiliated with King's Daughters' Medical Center.
When was this NPI record last updated?
The NPPES record for Gregory Hagopian was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Gregory William Hagopian, CRNA · NPI 1033159983
Nurse Anesthetist, Certified Registered physician in Knoxville, Tennessee. Individual provider, active in the CMS NPPES registry since June 8, 2006.
## Identity
- **NPI:** 1033159983 (Entity type: Individual)
- **Enumerated:** June 8, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 9197 (Tennessee)
- **Sole proprietor:** No
## Practice location
- **Address:** 501 20TH ST, SUITE 606, Knoxville, TN 37916-1809
- **Phone:** (865) 546-8040 · **Fax:** (865) 541-2787
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 3 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); Kings Daughters Medical Specialties Inc (NPI 1710215736, Prestonsburg, KY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** June 2, 2026
- **Other identifiers:** Medicaid 3602421 (TN); Other 3038594 (TN); Other 3038594 (TN); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1033159983) · Data from the CMS NPPES public registry.