Spencer Mason
NPI 1982064184 · Physician Assistant · Mission, SD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Spencer Mason is a Physician Assistant provider in Mission, SD (NPI 1982064184).
Provider details
- NPI number
- 1982064184
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
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
10 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
137 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 75 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 | $104 |
Typical Medicare-allowed amounts for these services range $73–$104 (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 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 61 | 19 |
| Atorvastatin Calcium | 55 | 20 |
| Lisinopril | 48 | 14 |
| Cephalexin | 26 | 21 |
| Omeprazole | 24 | 11 |
| Dulaglutidebrand: Trulicity | 22 | — |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-03-01
- Last updated
- 2016-05-18
Frequently asked questions
- What is Spencer Mason's NPI number?
- Spencer Mason's National Provider Identifier (NPI) is 1982064184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Spencer Mason's specialty?
- Spencer Mason is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Spencer Mason located?
- Spencer Mason's practice location on file with NPPES is 161 S Main, Mission, SD 57555.
- What is Spencer Mason's phone number?
- The practice phone number listed in the NPPES registry for Spencer Mason is (605) 856-2295.
- Does Spencer Mason accept Medicare?
- Spencer Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Spencer Mason's NPI active?
- Yes — Spencer Mason's NPI (1982064184) is active in the NPPES registry as of the last update on 2016-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.