James Callahan, M.D.
NPI 1346568193 · Hospitalist Physician · Douglasville, GA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Callahan, M.D. is a Hospitalist Physician provider in Douglasville, GA (NPI 1346568193).
Provider details
- NPI number
- 1346568193
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 69555 (GA)
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
16 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
528 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 50 Minutes99233 | 194 | $118 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 152 | $77 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 108 | $114 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 74 | $171 |
Typical Medicare-allowed amounts for these services range $77–$171 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 35 | 32 |
| Atorvastatin Calcium | 23 | 19 |
| Cefdinir | 21 | 21 |
| Levofloxacin | 19 | 19 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 19 | 15 |
| Furosemide | 19 | 18 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-05-04
- Last updated
- 2019-12-18
- Certified
- 2019-12-18
Frequently asked questions
- What is James Callahan's NPI number?
- James Callahan's National Provider Identifier (NPI) is 1346568193, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Callahan's specialty?
- James Callahan is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is James Callahan located?
- James Callahan's practice location on file with NPPES is 8954 Hospital Dr, Douglasville, GA 30134-2272.
- What is James Callahan's phone number?
- The practice phone number listed in the NPPES registry for James Callahan is (678) 838-2585.
- Does James Callahan accept Medicare?
- James Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Callahan's NPI active?
- Yes — James Callahan's NPI (1346568193) is active in the NPPES registry as of the last update on 2019-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.