Doctor profile · Federal record

Dr. Clayton James, D.O.

Anesthesiology Physician (CMS: Anesthesiology) · Anesthesiology Physician · Thornton, CO

  • NPI 1205222916
  • Accepts Medicare
  • 11 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
9191 Grant St
Thornton, CO 80229
(303) 451-7800
Additional location
11100 Euclid Ave
Cleveland, OH 441061716
(210) 845-8693
Mailing address
8000 E Maplewood Ave Ste 200
Greenwood Village, CO 801114727

Credentials & registration

NPPES · NUCC
NPI registered
April 2015 — 11 yrs on file
Profile last updated
May 12, 2023
Year of graduation
2015 — 11 yrs since
Specialty taxonomy
207L00000X — NUCC code
State licenses (2)
Arizona #009353 · Colorado #DR.0062329

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1205222916. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
126
Distinct HCPCS
6
Medicare allowed
$20,509
HCPCS Description Services Patients Avg allowed
00811 Anesthesia for other procedure on large bowel using an endoscope 30 30 $80
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) 26 26 $58
01402 Anesthesia for procedure for total knee joint replacement 25 25 $308
00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 21 19 $88
00670 Anesthesia for extensive surgery on spine 12 12 $532
00812 Anesthesia for exam of colon using an endoscope 12 12 $58

In context: peer comparison

Among 1 peers in this city , average services per provider: 21. This provider delivers 6.0× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Clayton James's medical specialty?
Dr. Clayton James practices Anesthesiology Physician in Thornton, CO.
Where does Dr. Clayton James practice?
Dr. Clayton James practices at 9191 Grant St, Thornton, CO 80229. Office phone: 3034517800.
What is Dr. Clayton James's NPI?
Dr. Clayton James's National Provider Identifier (NPI) is 1205222916, issued by NPPES.
Does Dr. Clayton James accept Medicare assignment?
Yes. Dr. Clayton James accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Clayton James commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on large bowel using an endoscope (HCPCS 00811); Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (HCPCS 64447); Anesthesia for procedure for total knee joint replacement (HCPCS 01402). Source: CMS Medicare Physician & Other Practitioners file.