Doctor profile · Federal record

Dr. Dorothy Sizemore, DO

Family Medicine Physician (CMS: Family Practice) · Billings, MT

  • NPI 1205248465
  • Accepts Medicare
  • 12 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
123 S 27Th St
Billings, MT 591014227
(406) 247-3306
fax (406) 247-3307

Credentials & registration

NPPES · NUCC
NPI registered
May 2014 — 12 yrs on file
Profile last updated
January 10, 2023
Year of graduation
2014 — 12 yrs since
Specialty taxonomy
207Q00000X — NUCC code
State license (1)
Montana #58761

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1205248465. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
93
Distinct HCPCS
3
Medicare allowed
$8,489
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 49 28 $78
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 31 14 $117
99238 Hospital discharge day management, 30 minutes or less 13 13 $80

In context: peer comparison

Among 28 peers in Billings Family Medicine Physician, average services per provider: 74. This provider delivers 1.3× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
392
Patients
116
Total drug cost
$26,366
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 57 21 $820
Levothyroxine Sodium Generic 40 21 $677
Losartan Potassium Generic 37 21 $551
Eliquis (Apixaban) Brand 30 0 $21,445
Amlodipine Besylate Generic 29 13 $274
Omeprazole Generic 26 14 $522
Rosuvastatin Calcium Generic 26 15 $409
Metoprolol Tartrate Generic 24 0 $215
Gabapentin Generic 20 0 $264
Hydrochlorothiazide Generic 20 0 $106

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Dorothy Sizemore's medical specialty?
Dr. Dorothy Sizemore practices Family Medicine Physician in Billings, MT.
Where does Dr. Dorothy Sizemore practice?
Dr. Dorothy Sizemore practices at 123 S 27Th St, Billings, MT 591014227. Office phone: 4062473306.
What is Dr. Dorothy Sizemore's NPI?
Dr. Dorothy Sizemore's National Provider Identifier (NPI) is 1205248465, issued by NPPES.
Does Dr. Dorothy Sizemore accept Medicare assignment?
Yes. Dr. Dorothy Sizemore accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dorothy Sizemore commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.