Paul Siddoway, M.D.
NPI 1275564189 · Internal Medicine Physician · Butte, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Paul Siddoway, M.D. is a Internal Medicine Physician provider in Butte, MT (NPI 1275564189).
Provider details
- NPI number
- 1275564189
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 6039 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,472 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 571 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 281 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 257 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 233 | $126 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 231 | $16 |
| Blood Test, Clotting Time85610 | 229 | $4 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 57 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 407 | 108 |
| Amlodipine Besylate | 361 | 94 |
| Levothyroxine Sodium | 316 | 76 |
| Omeprazole | 157 | 45 |
| Simvastatin | 150 | 37 |
| Potassium Chloride | 149 | 38 |
| Lisinopril | 138 | 39 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2017-01-11
Frequently asked questions
- What is Paul Siddoway's NPI number?
- Paul Siddoway's National Provider Identifier (NPI) is 1275564189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Paul Siddoway's specialty?
- Paul Siddoway is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Paul Siddoway located?
- Paul Siddoway's practice location on file with NPPES is 300 W Mercury St, Butte, MT 59701-1652.
- What is Paul Siddoway's phone number?
- The practice phone number listed in the NPPES registry for Paul Siddoway is (406) 723-1300.
- Does Paul Siddoway accept Medicare?
- Paul Siddoway is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Paul Siddoway's NPI active?
- Yes — Paul Siddoway's NPI (1275564189) is active in the NPPES registry as of the last update on 2017-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.