Daniel F. Callahan, M.D.

Pulmonary Disease Internal Medicine

Internal Medicine

(770) 343-8760Alpharetta, GA
Telehealth Available
NPI Active per CMS — Q2 2026

With over 41 years in internal medicine, Daniel Callahan, M.D. is a long-established pulmonologist in Alpharetta. A Medical College of Georgia School of Medicine graduate since 1985, he brings 41+ years of experience. Pulmonologists specialize in respiratory conditions including asthma, COPD, pneumonia, pulmonary fibrosis, sleep apnea, and more.

1 of 116 Internal Medicine providers in GASee all Internal Medicine in Alpharetta41+ years experienceNPI since 2005

Data updated 2021-04-26 on CMS NPPES

Contact & Location

Practice Location

3400 Old Milton Pkwy # C Ste 425, Alpharetta, GA 30005-3707

Fax: (770) 664-2101

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Internal MedicinePulmonary Disease in AlpharettaAllopathic & Osteopathic Physicians

Pulmonologists specialize in respiratory conditions including asthma, COPD, pneumonia, pulmonary fibrosis, sleep apnea, and lung cancer screening. They manage patients on ventilators and perform bronchoscopies.

Taxonomy: 207RP1001X

Education & Training

Medical College of Georgia School of Medicine (Class of 1985)

Virtual Pulmonary Disease Care With Daniel Callahan

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Daniel Callahan for follow-ups, medication reviews, and ongoing care — no travel to Alpharetta required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Daniel Callahan

NPI records show Dr. Callahan as active with telehealth listed in Alpharetta, GA. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (770) 343-8760.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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