Mark Dalton, D.O.
NPI 1093782138 · Internal Medicine Physician · Missoula, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Dalton, D.O. is a Internal Medicine Physician provider in Missoula, MT (NPI 1093782138).
Provider details
- NPI number
- 1093782138
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- O0822 (ID)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
579 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 | 265 | $76 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 138 | $114 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 68 | $108 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 35 | $78 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 34 | $125 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 31 | 30 |
| Prednisone | 27 | 25 |
| Cefdinir | 25 | 24 |
| Atorvastatin Calcium | 24 | 22 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 19 | 16 |
| Metoprolol Succinate | 18 | 13 |
| Hydrocodone/Acetaminophen |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-08
- Last updated
- 2023-06-06
- Certified
- 2023-06-06
Frequently asked questions
- What is Mark Dalton's NPI number?
- Mark Dalton's National Provider Identifier (NPI) is 1093782138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Dalton's specialty?
- Mark Dalton is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Dalton located?
- Mark Dalton's practice location on file with NPPES is 500 W Broadway St, Missoula, MT 59802-4008.
- What is Mark Dalton's phone number?
- The practice phone number listed in the NPPES registry for Mark Dalton is (406) 543-7271.
- Does Mark Dalton accept Medicare?
- Mark Dalton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Dalton's NPI active?
- Yes — Mark Dalton's NPI (1093782138) is active in the NPPES registry as of the last update on 2023-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.