Claire Mastel, PA-C
NPI 1871178202 · Physician Assistant · Billings, MT
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Mastel, PA-C is a Physician Assistant provider in Billings, MT (NPI 1871178202).
Provider details
- NPI number
- 1871178202
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- MED-PAC-LIC-90826 (MT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
84 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 | 53 | $105 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 31 | $59 |
Typical Medicare-allowed amounts for these services range $59–$105 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 20 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 46 |
| Aripiprazole | 44 |
| Trazodone Hcl | 44 |
| Bupropion Hclbrand: Bupropion Xl | 42 |
| Duloxetine Hcl | 41 |
| Propranolol Hcl | 30 |
| Buspirone Hcl | 29 |
| Quetiapine Fumarate | 24 |
| Gabapentin |
Practice location
Mailing address
Additional practice locations (1)
- 27 N 27th St Ste 21eBillings, MT 59101-2373Phone: (406) 200-8471
Registry dates
- Enumerated
- 2021-03-17
- Last updated
- 2023-07-11
- Certified
- 2023-07-11
Frequently asked questions
- What is Claire Mastel's NPI number?
- Claire Mastel's National Provider Identifier (NPI) is 1871178202, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Mastel's specialty?
- Claire Mastel is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claire Mastel located?
- Claire Mastel's practice location on file with NPPES is 820 Division St, Billings, MT 59101-2049.
- What is Claire Mastel's phone number?
- The practice phone number listed in the NPPES registry for Claire Mastel is (406) 294-5225.
- Does Claire Mastel accept Medicare?
- Claire Mastel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Mastel's NPI active?
- Yes — Claire Mastel's NPI (1871178202) is active in the NPPES registry as of the last update on 2023-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.