Quick answers
- Does Erik H. Groscost accept Medicare assignment?
- Yes. Medicare's clinician data says Erik H. Groscost accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Erik H. Groscost see?
- In 2024, CMS data shows 155 Original Medicare patients and 155 services for Erik H. Groscost. This counts Original Medicare only and measures volume, not quality.
- What is Erik H. Groscost's NPI number?
- 1639148505. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Erik H. Groscost, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 155 |
|---|---|
| Services billed to Medicare | 155 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for procedure for total knee joint replacement (01402)37 services
- Anesthesia for total hip replacement (01214)18 services
- Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)18 services
- Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Arthritis75%
- High cholesterol70%
- High blood pressure69%
- Depression28%
- Anxiety28%
- Diabetes24%
Practice locations
Addresses where Erik H. Groscost is enrolled with Medicare (CMS data updated October 2, 2026).
- 1600 Accelerator Way, Suite 100Knoxville, TN 37920 (865) 963‑4120
- 256 Fort Sanders W Blvd, Unit 8Knoxville, TN 37922 (865) 558‑4400
- 990 Oak Ridge TpkeOak Ridge, TN 37830 (865) 835‑3560
Group practices
Medicare enrollment lists Erik H. Groscost as a member of these groups (CMS data updated October 2, 2026).
- Covenant Anesthesia Group PC231 clinicians in the group
- Resource Anesthesia, P.C.71 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Tennessee →
Other nurse anesthetists in Knoxville
Clinicians with the same Medicare primary specialty in Knoxville, TN — not a recommendation.
Other clinicians in Covenant Anesthesia Group PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639148505 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians