Gay Canaris, MD
NPI 1851358147 · Internal Medicine Physician · Billings, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gay Canaris, MD is a Internal Medicine Physician provider in Billings, MT (NPI 1851358147).
Provider details
- NPI number
- 1851358147
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 20200 (NE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
767 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 297 | $78 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 256 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 119 | $105 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 78 | $61 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 17 | $94 |
Typical Medicare-allowed amounts for these services range $16–$105 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 260 | 68 |
| Losartan Potassium | 217 | 62 |
| Levothyroxine Sodium | 201 | 53 |
| Lisinopril | 189 | 47 |
| Rosuvastatin Calcium | 170 | 51 |
| Amlodipine Besylate | 123 | 40 |
| Omeprazole |
Practice location
Mailing address
Additional practice locations (2)
- 988102 Nebraska Medical CtrOmaha, NE 68198-8102Phone: (402) 559-9800Fax: (402) 595-1284
- 988102 Nebraska Medical CtrOmaha, NE 68198-8102Phone: (402) 559-9800Fax: (402) 595-1284
Registry dates
- Enumerated
- 2006-04-28
- Last updated
- 2022-02-22
- Certified
- 2022-02-22
Frequently asked questions
- What is Gay Canaris's NPI number?
- Gay Canaris's National Provider Identifier (NPI) is 1851358147, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gay Canaris's specialty?
- Gay Canaris is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gay Canaris located?
- Gay Canaris's practice location on file with NPPES is 801 N 29th St, Billings, MT 59101.
- What is Gay Canaris's phone number?
- The practice phone number listed in the NPPES registry for Gay Canaris is (406) 238-2500.
- Does Gay Canaris accept Medicare?
- Gay Canaris is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gay Canaris's NPI active?
- Yes — Gay Canaris's NPI (1851358147) is active in the NPPES registry as of the last update on 2022-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.