Mitchell Marzo, M.D.
NPI 1851594626 · Internal Medicine Physician · Kalispell, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mitchell Marzo, M.D. is a Internal Medicine Physician provider in Kalispell, MT (NPI 1851594626).
Provider details
- NPI number
- 1851594626
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 26272 (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 tenure28% of score
19 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
637 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 176 | $78 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 118 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 106 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 104 | $172 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 83 | $49 |
| Critical Care, First 30-74 Minutes99291 | 26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cefdinir | 28 | 28 |
| Prednisone | 26 | 26 |
| Furosemide | 19 | 14 |
| Doxycycline Hyclate | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
| Azithromycin | 15 | 15 |
| Apixabanbrand: Eliquis | 15 | — |
Practice location
Mailing address
Additional practice locations (1)
- 3100 Tongass AveKetchikan, AK 99901-5746Phone: (907) 228-5171Fax: (907) 228-8335
Registry dates
- Enumerated
- 2007-06-07
- Last updated
- 2022-08-11
- Certified
- 2022-08-10
Frequently asked questions
- What is Mitchell Marzo's NPI number?
- Mitchell Marzo's National Provider Identifier (NPI) is 1851594626, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mitchell Marzo's specialty?
- Mitchell Marzo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mitchell Marzo located?
- Mitchell Marzo's practice location on file with NPPES is 310 Sunnyview Ln, Kalispell, MT 59901-3129.
- What is Mitchell Marzo's phone number?
- The practice phone number listed in the NPPES registry for Mitchell Marzo is (406) 751-5310.
- Does Mitchell Marzo accept Medicare?
- Mitchell Marzo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mitchell Marzo's NPI active?
- Yes — Mitchell Marzo's NPI (1851594626) is active in the NPPES registry as of the last update on 2022-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.