Gregory Merritt, CRNA
NPI 1144521162 · Certified Registered Nurse Anesthetist · Knoxville, TN
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1144521162
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNA
- Sex
- Male
- Sole proprietor
- No
- License
- RN0000145303 (TN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
58 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 38 | $131 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 20 | $96 |
Typical Medicare-allowed amounts for these services range $96–$131 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (4)
- 10820 Parkside DrKnoxville, TN 37934-1956Phone: (865) 218-7011
- 140 Capital DrKnoxville, TN 37922-3572Phone: (865) 251-0338
- 900 E Oak Hill AveKnoxville, TN 37917-4505Phone: (865) 545-8000
- 7565 Dannaher DrPowell, TN 37849-4029Phone: (865) 859-8000
Registry dates
- Enumerated
- 2010-11-08
- Last updated
- 2018-08-30
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.