Doctor profile · Federal record

Dr. Sierra Cobb

Hospitalist Physician (CMS: Family Practice) · Family Medicine Physician · Great Falls, MT

  • NPI 1538609623
  • Accepts Medicare
  • MIPS 80.5 / 100 · 2023
  • 9 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1101 26Th St S
Great Falls, MT 594055161
(406) 731-8888

Credentials & registration

NPPES · NUCC
NPI registered
March 2017 — 9 yrs on file
Profile last updated
April 8, 2024
Year of graduation
2017 — 9 yrs since
Specialty taxonomy
208M00000X — NUCC code
State license (1)
Montana #81289

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1538609623. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
588
Distinct HCPCS
3
Medicare allowed
$50,871
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 469 178 $79
99239 Hospital discharge day management, more than 30 minutes 88 86 $115
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 31 20 $119

In context: peer comparison

Among 12 peers in Great Falls Hospitalist Physician, average services per provider: 139. This provider delivers 4.2× the peer median.

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sierra Cobb's medical specialty?
Dr. Sierra Cobb practices Hospitalist Physician in Great Falls, MT.
Where does Dr. Sierra Cobb practice?
Dr. Sierra Cobb practices at 1101 26Th St S, Great Falls, MT 594055161. Office phone: 4067318888.
What is Dr. Sierra Cobb's NPI?
Dr. Sierra Cobb's National Provider Identifier (NPI) is 1538609623, issued by NPPES.
Does Dr. Sierra Cobb accept Medicare assignment?
Yes. Dr. Sierra Cobb accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sierra Cobb commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Hospital discharge day management (HCPCS 99239); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.