Doctor profile · Federal record

Dr. Sonja O'Sullivan, CRNA

Certified Registered Nurse Anesthetist (CMS: Certified Registered Nurse Anesthetist (CRNA)) · Certified Registered Nurse Anesthetist · Knoxville, TN

  • NPI 1518324037
  • Accepts Medicare
  • MIPS 92.0 / 100 · 2023
  • 11 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1901 Clinch Ave
Knoxville, TN 379162307
(865) 541-1111
Additional location
99 E River Dr, 5Th Floor
East Hartford, CT 061083288
(860) 282-4128
fax (860) 289-0746
Mailing address
2 Trap Falls RD, Suite 414
Shelton, CT 064844616

Credentials & registration

NPPES · NUCC
NPI registered
January 2016 — 10 yrs on file
Profile last updated
August 30, 2018
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
367500000X — NUCC code
State licenses (2)
Tennessee #24560 · Connecticut #107689

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1518324037. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
28
Distinct HCPCS
2
Medicare allowed
$2,915
HCPCS Description Services Patients Avg allowed
00811 Anesthesia for other procedure on large bowel using an endoscope 17 17 $64
01402 Anesthesia for procedure for total knee joint replacement 11 11 $166

In context: peer comparison

Among 110 peers in this city , average services per provider: 33. This provider delivers 0.8× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sonja O'Sullivan's medical specialty?
Dr. Sonja O'Sullivan practices Certified Registered Nurse Anesthetist in Knoxville, TN.
Where does Dr. Sonja O'Sullivan practice?
Dr. Sonja O'Sullivan practices at 1901 Clinch Ave, Knoxville, TN 379162307. Office phone: 8655411111.
What is Dr. Sonja O'Sullivan's NPI?
Dr. Sonja O'Sullivan's National Provider Identifier (NPI) is 1518324037, issued by NPPES.
Does Dr. Sonja O'Sullivan accept Medicare assignment?
Yes. Dr. Sonja O'Sullivan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sonja O'Sullivan commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on large bowel using an endoscope (HCPCS 00811); Anesthesia for procedure for total knee joint replacement (HCPCS 01402). Source: CMS Medicare Physician & Other Practitioners file.