Charles Callaghan, MD
NPI 1649369489 · Internal Medicine Physician · Saint Paul, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Callaghan, MD is a Internal Medicine Physician provider in Saint Paul, MN (NPI 1649369489).
Provider details
- NPI number
- 1649369489
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 37316 (MN)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,051 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 364 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 338 | $124 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 229 | $16 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 227 | $6 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 188 | $10 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent Visit |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 136 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 529 | 152 |
| Losartan Potassium | 397 | 131 |
| Rosuvastatin Calcium | 374 | 119 |
| Amlodipine Besylate | 330 | 110 |
| Levothyroxine Sodium | 322 | 91 |
| Simvastatin | 313 | 87 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Charles Callaghan's NPI number?
- Charles Callaghan's National Provider Identifier (NPI) is 1649369489, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Callaghan's specialty?
- Charles Callaghan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Callaghan located?
- Charles Callaghan's practice location on file with NPPES is 17 W Exchange St, Saint Paul, MN 55102.
- What is Charles Callaghan's phone number?
- The practice phone number listed in the NPPES registry for Charles Callaghan is (651) 232-4125.
- Does Charles Callaghan accept Medicare?
- Charles Callaghan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Callaghan's NPI active?
- Yes — Charles Callaghan's NPI (1649369489) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.