Physician Profile
Unclaimed ProfileAbout CALLAHAN
Michael Harris Callahan, M.D. practices otolaryngology in Gainesville, GA. Michael is a 1996 graduate of Medical College of Georgia School of Medicine. Michael is also listed as specializing in otolaryngology — pediatric. Medicare claims data shows Michael provided 1,345 services to 1,149 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) 534-5208
- Email not available
Practice Locations
584 LANIER PARK DR
Gainesville, GA 30501
Procedures Most Often Billed to Medicare
1,345 services · 1,149 patients · 14 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Diagnostic exam of voice box using a flexible endoscope | Procedure | 31575 |
156 |
| Diagnostic exam of nasal passages using an endoscope | Procedure | 31231 |
147 |
| Removal of impacted ear wax | Procedure | 69210 |
86 |
| Biopsy or removal of nasal polyp or tissue using an endoscope | Procedure | 31237 |
28 |
| Incision of eardrum with insertion of eardrum tube under local or topical anesthesia | Procedure | 69433 |
19 |
| Ct scan of face without contrast | Imaging | 70486 |
15 |
| Test to assess middle ear function | Treatment | 92567 |
123 |
| Exam of ear using a microscope | Treatment | 92504 |
32 |
| Exam of the nose and throat using an endoscope | Treatment | 92511 |
16 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
334 |
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.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 otolaryngology specialists in Gainesville 6
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Medical College of Georgia School of Medicine 7
Other providers in the same specialty who trained at the same institution.
Class of 1996 at Medical College of Georgia School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of voice box using a flexible endoscope 8
Providers in GA who bill this service to Medicare most often.
Common questions
What does Dr. Callahan specialize in?
Dr. Callahan is an otolaryngology in Gainesville, GA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “OTOLARYNGOLOGY”.
NPI registry
Where is Dr. Callahan located?
Dr. Callahan is listed at 584 LANIER PARK DR, Gainesville, GA 30501. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Callahan's phone number?
The number on file is (770) 534-5208. 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 1063564243. 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 go to medical school?
Dr. Callahan attended Medical College of Georgia School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Callahan have?
Dr. Callahan has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Callahan do most often?
According to Medicare billing data, Dr. Callahan performs procedures including diagnostic exam of voice box using a flexible endoscope, diagnostic exam of nasal passages using an endoscope and removal of impacted ear wax; reads or performs imaging such as ct scan of face without contrast; provides treatments such as test to assess middle ear function and exam of ear using a microscope, 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.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.