James Maddux, MD
NPI 1942237326 · Interventional Cardiology Physician · Missoula, MT
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Maddux, MD is a Interventional Cardiology Physician provider in Missoula, MT (NPI 1942237326).
Provider details
- NPI number
- 1942237326
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MED-PHYS-LIC-10525 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,022 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 399 | $8 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 300 | $12 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 254 | $126 |
| Insertion of Tube in Left Lower Heart Chamber and Coronary Artery for Diagnosis With Review By Radiologist93458 | 147 | $239 |
| Programming of Dual Lead Pacemaker System93280 | 136 | $75 |
| Insertion of Stents With Balloon Dilation of Coronary Artery Or Branch, Single Artery Or Branch |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 281 | 95 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 166 | 73 |
| Metoprolol Succinate | 162 | 56 |
| Lisinopril | 156 | 54 |
| Furosemide | 122 | 48 |
| Losartan Potassium | 122 | 34 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$8,587 across 35 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
Additional practice locations (2)
- 435 S Crystal St Ste 240Butte, MT 59701-1523Phone: (406) 496-3660Fax: (406) 496-3677
- 1200 Westwood DrHamilton, MT 59840-2345Phone: (406) 375-4665
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2025-09-23
- Certified
- 2025-09-23
Frequently asked questions
- What is James Maddux's NPI number?
- James Maddux's National Provider Identifier (NPI) is 1942237326, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Maddux's specialty?
- James Maddux is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is James Maddux located?
- James Maddux's practice location on file with NPPES is 500 W Broadway St, Missoula, MT 59802-4003.
- What is James Maddux's phone number?
- The practice phone number listed in the NPPES registry for James Maddux is (406) 329-5615.
- Does James Maddux accept Medicare?
- James Maddux is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Maddux's NPI active?
- Yes — James Maddux's NPI (1942237326) is active in the NPPES registry as of the last update on 2025-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.