Active NPI 1770513913 Individual Practitioner Male Practitioner

Dr. Stefan J Grenvik , MD

Anesthesiology • Bristol, TN

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Stefan Grenvik, MD is a certified Anesthesiology practicing in Bristol, TN. With approximately 37 years of clinical experience since graduating from University Of Pittsburgh School Of Medicine in 1989, Dr. Grenvik delivers high-quality medical care to the local community at 1 MEDICAL PARK BLVD.

Dr. Grenvik is affiliated with Lafayette Health Ventures Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, anesthesia for procedure in upper abdomen including use of an endoscope, injection of anesthetic agent, other peripheral nerve or branch. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Medical Park Blvd

Bristol, TN 376207430

Telephone 4239684540

Fax 4239685697

Associated Practice Facility / Clinic

🏢 Medical Mall Pharmacy Inc Facility NPI 1598768699

Medicare Profile & Education

Medical School

University Of Pittsburgh School Of Medicine

Graduation Year

1989

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Bristol, TN

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

37 Yrs +16.7 yrs vs City Avg

City Avg: 20.3 Yrs

State Avg: 23.4 Yrs

Regional Practice Density

11 Specialists

Practicing in Bristol, TN (1001 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

93.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Grenvik (37 Years) 37 Yrs

Bristol Specialty Average (20.3 Years) 20.3 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	33	32	$895.55	$66.38
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	18	18	$2129.11	$159.12
64450 Injection of anesthetic agent, other peripheral nerve or branch	16	16	$711.00	$27.32
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	15	15	$995.00	$54.11
01480 Anesthesia for open procedure on bones of lower leg, ankle and foot	14	13	$1051.76	$78.14
01922 Anesthesia for x-ray or radiation therapy	13	13	$1246.37	$95.94
00670 Anesthesia for procedure on spine and spinal cord	11	11	$3445.39	$255.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	20	20	$884.00	$65.58
00910 Anesthesia for other procedure on urinary system through urethra	17	17	$777.96	$58.23
64415 Injection of anesthetic agent, brachial (arm) nerve bundle	17	17	$1137.00	$65.26
64450 Injection of anesthetic agent, other peripheral nerve or branch	15	15	$711.00	$27.45
00520 Anesthesia for closed procedure in chest	14	13	$1264.71	$96.95
01810 Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand	13	13	$837.33	$64.12
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	13	13	$1071.54	$57.31
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	12	12	$1731.88	$132.78
01402 Anesthesia for procedure for total knee joint replacement	11	11	$1833.39	$130.09
00840 Anesthesia for procedure in lower abdominal cavity including use of an endoscope	11	11	$1664.78	$127.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	33	32	$970.71	$70.79
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	24	24	$213.21	$29.48
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	24	24	$2184.76	$158.71
00811 Anesthesia for procedure on large bowel using an endoscope	16	16	$1042.44	$68.22
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	15	15	$995.00	$50.06
36620 Insertion of artery tube for blood sampling or infusion through skin	15	15	$426.00	$41.87
00918 Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope	15	15	$1186.87	$88.74
00910 Anesthesia for other procedure on urinary system through urethra	13	13	$787.26	$56.76
00902 Anesthesia for procedure on anus and rectum	13	13	$973.32	$68.10
64450 Injection of anesthetic agent, other peripheral nerve or branch	12	12	$711.00	$23.02

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	47	47	$994.92	$70.27
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	36	35	$213.21	$30.14
00910 Anesthesia for other procedure on urinary system through urethra	27	27	$825.59	$58.73
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	22	22	$2370.09	$167.34
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	22	21	$995.00	$51.10
00630 Anesthesia for other procedure on lower spine	18	18	$2390.89	$170.14
01402 Anesthesia for procedure for total knee joint replacement	16	15	$2039.06	$145.14
64450 Injection of anesthetic agent, other peripheral nerve or branch	16	15	$711.00	$22.71
01810 Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand	15	15	$734.57	$49.41
00670 Anesthesia for procedure on spine and spinal cord	14	14	$3981.39	$282.20
01230 Anesthesia for open procedure on upper two-thirds of thigh bone	13	13	$1835.37	$130.73
36620 Insertion of artery tube for blood sampling or infusion through skin	13	13	$426.00	$42.89

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	52	51	$973.04	$70.33
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	36	36	$213.21	$30.56
00910 Anesthesia for other procedure on urinary system through urethra	25	22	$809.62	$60.65
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	22	22	$981.82	$50.47
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	19	19	$2013.75	$155.84
00520 Anesthesia for closed procedure in chest	19	19	$1477.41	$110.56
01402 Anesthesia for procedure for total knee joint replacement	19	19	$2116.40	$158.69
00811 Anesthesia for procedure on large bowel using an endoscope	13	13	$916.96	$68.73
00630 Anesthesia for other procedure on lower spine	13	13	$2314.93	$172.65
00902 Anesthesia for procedure on anus and rectum	13	13	$1155.75	$86.65
36620 Insertion of artery tube for blood sampling or infusion through skin	12	12	$424.00	$44.32
00670 Anesthesia for procedure on spine and spinal cord	12	12	$3692.75	$276.48
00320 Anesthesia for procedure on esophagus and neck, age 1 year or older	12	12	$1598.96	$119.80
00918 Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope	11	11	$1269.97	$94.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	50	50	$992.72	$75.79
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	26	25	$213.21	$31.41
00910 Anesthesia for other procedure on urinary system through urethra	23	20	$754.24	$57.66
01402 Anesthesia for procedure for total knee joint replacement	22	21	$2017.13	$154.41
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	19	18	$850.68	$65.51
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	18	18	$2093.92	$159.99
00902 Anesthesia for procedure on anus and rectum	17	17	$1042.97	$79.43
00840 Anesthesia for procedure in lower abdominal cavity including use of an endoscope	17	17	$2130.90	$162.36
00811 Anesthesia for procedure on large bowel using an endoscope	16	16	$915.48	$69.89
00630 Anesthesia for other procedure on lower spine	14	14	$2298.54	$175.54
36620 Insertion of artery tube for blood sampling or infusion through skin	14	14	$414.00	$43.88
00520 Anesthesia for closed procedure in chest	13	12	$1420.50	$105.65
00670 Anesthesia for procedure on spine and spinal cord	13	13	$3685.76	$281.48
00912 Anesthesia for removal of urinary bladder tumors including use of an endoscope	11	11	$1128.97	$86.14

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	41	40	$1021.87	$75.54
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	24	24	$2085.43	$158.59
36620 Insertion of artery tube for blood sampling or infusion through skin	20	20	$278.80	$42.98
00910 Anesthesia for other procedure on urinary system through urethra	19	18	$844.49	$64.39
00630 Anesthesia for other procedure on lower spine	17	17	$2287.24	$166.55
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	17	17	$213.21	$29.51
00918 Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope	16	16	$1246.54	$86.10
00840 Anesthesia for procedure in lower abdominal cavity including use of an endoscope	13	13	$1991.02	$150.27
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	12	12	$648.25	$64.50
00400 Anesthesia for procedure on skin of arms, legs, or trunk	11	11	$1073.77	$78.99
01402 Anesthesia for procedure for total knee joint replacement	11	11	$2186.10	$165.38
00812 Anesthesia for exam of colon using an endoscope	11	11	$937.71	$59.31
00670 Anesthesia for procedure on spine and spinal cord	11	11	$3529.39	$248.26

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00740 Anesthesia for procedure on gastrointestinal tract using an endoscope	45	45	$1089.33	$80.84
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	26	26	$213.21	$31.21
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	21	21	$1975.71	$151.28
00810 Anesthesia for procedure on lower intestine using an endoscope	19	19	$1100.47	$81.66
00910 Anesthesia for other procedure on urinary system through urethra	18	18	$804.56	$56.41
00670 Anesthesia for procedure on spine and spinal cord	17	17	$3685.35	$285.69
01402 Anesthesia for procedure for total knee joint replacement	16	16	$1930.31	$146.68
01230 Anesthesia for open procedure on upper two-thirds of thigh bone	15	15	$1541.60	$115.43
36620 Insertion of artery tube for blood sampling or infusion through skin	15	15	$271.47	$46.88
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	14	14	$634.00	$64.10
00918 Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope	13	13	$1224.23	$92.25
00630 Anesthesia for other procedure on lower spine	11	11	$2266.36	$172.69
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	11	11	$362.00	$107.41

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License TN MD024364

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Hospital & Practice Group Affiliations

Lafayette Health Ventures Inc

1214 Coolidge Blvd, Lafayette, LA 705032621

Phone: 3372897991

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

30 Associated Practitioners

Chasity Huffman , RN

Nurse Anesthetist, Certified Registered

NPI 1033675780

Registered Nurse

Dr. Marilyn Goldstein , MD

Anesthesiology

NPI 1043247315

Doctor of Medicine (M.D.)

Amanda Gaither , CRNA

Nurse Anesthetist, Certified Registered

NPI 1164621371

Certified Registered Nurse Anesthetist

Dr. Stephen Evans , MD

Anesthesiology

NPI 1194015412

Doctor of Medicine (M.D.)

Brandace Golden , CRNA

Nurse Anesthetist, Certified Registered

NPI 1215136429

Certified Registered Nurse Anesthetist

Lynn Couch , CRNA

Nurse Anesthetist, Certified Registered

NPI 1215944103

Certified Registered Nurse Anesthetist

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active March 12, 2009

NPI status registered as active in NPPES database

📍

Updated Practice Location March 12, 2009

Registered at 1 MEDICAL PARK BLVD, BRISTOL, TN 376207430 (Tel: 4239684540)

📍

Updated Business Mailing Address March 12, 2009

Registered at 350 BLOUNTVILLE HWY, SUITE 207, BRISTOL, TN 376200213 (Tel: 4239684540)

👤

Provider Name / Credentials Updated March 12, 2009

Recorded as STEFAN GRENVIK, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 12, 2009

Anesthesiology (License #MD024364 in TN)

🟢

Initial NPI Registration & Enumeration July 04, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1770513913

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: July 04, 2006

Last Update: March 07, 2023

Sole Proprietor: No

Update or Correct Profile

Mailing Address

350 Blountville Hwy, Suite 207

Bristol, TN 376200213

Phone: 4239684540

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.