Doctor profile · Federal record
Dr. Gay Canaris, MD
Internal Medicine Physician (CMS: Internal Medicine) · Billings, MT
- NPI 1851358147
- Accepts Medicare
- 39 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
801 N 29Th St
Billings, MT 59101
(406) 238-2500 - Additional location
-
988102 Nebraska Medical Ctr
Omaha, NE 681988102
(402) 559-9800
fax (402) 595-1284 - Mailing address
-
Po Box 35100
Billings, MT 591075100
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- February 22, 2022
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Nebraska #20200
- Medicaid
- NE #47078557589
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851358147. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
490
Distinct HCPCS
4
Medicare allowed
$41,582
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 252 | 211 | $78 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 188 | 133 | $96 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 29 | 28 | $62 | |
99495 |
Transitional care management services for problem of at least moderate complexity | 21 | 20 | $98 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 126. This provider delivers 3.9× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,693
Patients
490
Total drug cost
$22,662
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 251 | 67 | $2,626 |
| Levothyroxine Sodium | Generic | 190 | 47 | $2,102 |
| Losartan Potassium | Generic | 171 | 54 | $2,747 |
| Lisinopril | Generic | 163 | 45 | $1,486 |
| Omeprazole | Generic | 128 | 36 | $2,076 |
| Amlodipine Besylate | Generic | 118 | 36 | $1,356 |
| Rosuvastatin Calcium | Generic | 108 | 34 | $2,043 |
| Famotidine | Generic | 104 | 34 | $2,001 |
| Simvastatin | Generic | 97 | 26 | $664 |
| Alendronate Sodium | Generic | 73 | 20 | $576 |
Frequently asked questions
What is Dr. Gay Canaris's medical specialty?
Dr. Gay Canaris practices Internal Medicine Physician in Billings, MT.
Where does Dr. Gay Canaris practice?
Dr. Gay Canaris practices at 801 N 29Th St, Billings, MT 59101. Office phone: 4062382500.
What is Dr. Gay Canaris's NPI?
Dr. Gay Canaris's National Provider Identifier (NPI) is 1851358147, issued by NPPES.
Does Dr. Gay Canaris accept Medicare assignment?
Yes. Dr. Gay Canaris accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gay Canaris commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.