Physician Profile
Unclaimed ProfileAbout CALLAHAN
Based in Alpharetta, GA, Daniel F. Callahan, M.D. is listed in the NPI registry under pulmonary disease. Daniel graduated from Medical College of Georgia School of Medicine in 1985. Daniel is also listed as specializing in sleep medicine. Medicare claims data shows Daniel provided 1,125 services to 950 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (770) 343-8760
- Email not available
Practice Locations
3400 OLD MILTON PKWY # C STE 425
Alpharetta, GA 30005
Procedures Most Often Billed to Medicare
1,125 services · 950 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Irrigation and suction of lung airways to obtain cells using an endoscope | Procedure | 31624 |
14 |
| X-ray of chest, 2 views | Imaging | 71046 |
17 |
| Sleep study including heart rate, breathing, airflow, and effort | Treatment | 95806 |
120 |
| Sleep study in sleep lab with continuous airway pressure (6 years or older) | Treatment | 95811 |
39 |
| Sleep study in sleep lab (6 years or older) | Treatment | 95810 |
37 |
| Test to examine how well the lungs exchange gases | Treatment | 94729 |
35 |
| Test to measure rate of airflow | Treatment | 94375 |
26 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
392 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
146 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
96 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other pulmonary diseases in Alpharetta 5
Same specialty, same city.
Trained at Medical College of Georgia School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1985 at Medical College of Georgia School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Irrigation and suction of lung airways to obtain cells using an endoscope 8
Providers in GA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Callahan?
Dr. Callahan is a pulmonary disease in Alpharetta, GA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “PULMONARY DISEASE”.
NPI registry
What is Dr. Callahan's address?
Dr. Callahan is listed at 3400 OLD MILTON PKWY # C STE 425, Alpharetta, GA 30005. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Callahan?
The number on file is (770) 343-8760. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Callahan?
Dr. Callahan's National Provider Identifier is 1598761223. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Callahan train?
Dr. Callahan attended Medical College of Georgia School of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Callahan have?
Dr. Callahan has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Callahan perform?
According to Medicare billing data, Dr. Callahan performs procedures including irrigation and suction of lung airways to obtain cells using an endoscope; reads or performs imaging such as x-ray of chest, 2 views; provides treatments such as sleep study including heart rate, breathing, airflow, and effort and sleep study in sleep lab with continuous airway pressure, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Callahan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Callahan. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.