Quick answers
- Which hospitals does Daniel Callahan work at?
- Medicare's official clinician data lists Daniel Callahan at 3 hospitals: Northside Hospital, Northside Hospital Cherokee and Northside Hospital Forsyth. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel Callahan see patients?
- Medicare's clinician data lists 1 practice location in Alpharetta, GA. Call before your visit to confirm the address.
- What is Daniel Callahan's specialty?
- Medicare lists Pulmonary Disease as the primary specialty.
- Does Daniel Callahan accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel Callahan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Daniel Callahan offer telehealth?
- Medicare's clinician data says Daniel Callahan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Daniel Callahan?
- (770) 343-8760, as listed in official Medicare / NPI Registry data.
- What is Daniel Callahan's NPI number?
- 1598761223. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel Callahan works
Medicare's Facility Affiliation Data lists Daniel Callahan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northside HospitalAtlanta, GA · Acute Care Hospital · CCN 110161
- Northside Hospital CherokeeCanton, GA · Acute Care Hospital · CCN 110008
- Northside Hospital ForsythCumming, GA · Acute Care Hospital · CCN 110005
Practice locations
Addresses where Daniel Callahan is enrolled with Medicare (CMS data updated 2026-10-02).
- 3400 A Old Milton PkwyAlpharetta, GA 30005 (770) 343‑8760
Group practices
Medicare enrollment lists Daniel Callahan as a member of this group (CMS data updated 2026-10-02).
- Northside Primary Care Professional Services, LLC314 clinicians in the group
Specialties
- Pulmonary Diseaseprimary
Other pulmonologists in Alpharetta
Clinicians with the same Medicare primary specialty in Alpharetta, GA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Georgia School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1598761223 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians