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Edit this profileStefan J. Grenvik, MD practices anesthesiology in Bristol, TN. Stefan is a 1989 graduate of University of Pittsburgh School of Medicine. Medicare claims data shows Stefan provided 120 services to 118 patients. The services billed most often include anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope, anesthesia for other procedure on upper abdomen, and injection of anesthetic agent and/or steroid into other nerve or branch. The provider's National Provider Identifier (NPI) is 1770513913.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
1 MEDICAL PARK BLVD
Bristol, TN 37620
Within Anesthesiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Anesthesia complications
Back & spine
Chronic pain
Facial & jaw pain
General pain
Head & facial pain
Headaches
Joint pain
Mental health
Muscle pain
Musculoskeletal pain
Nerve pain
Pelvic pain
Post-surgery recovery
Sedation & anesthesia
Spine pain
Ablation
Head & facial procedures
Implants & devices
Infusion therapies
Infusion therapy
Joint injections
Muscle injections
Nerve blocks
Nerve injections
Nerve procedures
Pain relief procedures
Regional anesthesia
Sedation
Sedation & anesthesia
Spine injections
Spine procedures
120 services · 118 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of anesthetic agent and/or steroid into other nerve or branch | Procedure | 64450 |
16 | As often as other peers in Anesthesiology |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | Procedure | 64447 |
15 | Less often than most peers in Anesthesiology |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | Anaesthesia | 00731 |
33 | More often than most peers in Anesthesiology |
| Anesthesia for other procedure on upper abdomen | Anaesthesia | 00790 |
18 | More often than most peers in Anesthesiology |
| Anesthesia for other procedure on lower leg, ankle, and foot bones | Anaesthesia | 01480 |
14 | As often as other peers in Anesthesiology |
| Anesthesia for x-ray or radiation therapy | Anaesthesia | 01922 |
13 | Less often than most peers in Anesthesiology |
| Anesthesia for extensive surgery on spine | Anaesthesia | 00670 |
11 | Less often than most peers in Anesthesiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Grenvik is an anesthesiologist in Bristol, TN. That is the designation recorded for this NPI in the federal registry, where it is listed as “Anesthesiology”.
NPI registry
Dr. Grenvik is listed at 1 Medical Park Blvd, Bristol, TN 37620. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (423) 968-4540. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Grenvik's National Provider Identifier is 1770513913. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Grenvik attended University of Pittsburgh School of Medicine, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
Dr. Grenvik has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Grenvik performs procedures including injection of anesthetic agent and/or steroid into other nerve or branch and injection of anesthetic agent and/or steroid into thigh nerve; provides treatments such as anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope and anesthesia for other procedure on upper abdomen. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grenvik. If this is you, claiming it is free.
Guide.md
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