Thomas P. McGahan, M.D.
Gastroenterology Physician · Atlanta, GA
Thomas P. McGahan, M.D. is a gastroenterology physician with a practice address in Atlanta, Georgia, and NPI 1861455487, issued on Apr 7, 2006. Check the license (Georgia 033861, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas P. McGahan
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 033861 GA
Self-reported in NPPES; status is on the state search - Practice location
- 5669 Peachtree Dunwoody RD NE, Atlanta, GA 30342
- Phone
- (404) 255-4333
- Enumerated
- Apr 7, 2006
- Record last updated
- May 7, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (404) 255-0601
- Medicaid ID
- 00606515B GA
- Medicare enrollment
- Enrolled (PECOS I20080428000643); accepts Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 530 in Georgia → Look up another NPI →
Also registered at 5669 Peachtree Dunwoody RD NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gary Beldick, M.D.Ophthalmology Physician1518025881
- Kelly Carson, M.D.Gastroenterology Physician1801859327
- Michael Chorches, M.D.Specialist1952349409
- Michael Clark, M.D.Vascular Surgery Physician1528028925
- Andrea Dameron, CFNPFamily Nurse Practitioner1689878795
Verify Thomas P. McGahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 033861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average gastroenterology physician in 2024
364 Medicare Part D claims for 189 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Gavilyte-G84 claims
- Pantoprazole Sodium82 claims
- Omeprazole42 claims
- Creon35 claims
- Sod Sulf-Potass Sulf-Mag Sulf22 claims
- Budesonide Dr17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 92.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- The Emory Clinic IncAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas P. McGahan among 530 gastroenterology physician records in Georgia
Thomas P. McGahan, M.D. is one of 530 gastroenterology physician records with a practice address in Georgia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 21% of them.
- NPI issued2006 · 21% of these records are older, 45% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1992 · median 2001 among the 397 with a school on file
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Georgia
There are 530 gastroenterology physician records in Georgia.
All 530 in Georgia → Every provider in Atlanta → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- David Brandenburg, MDAtlanta, GA 303421821088790
- Kelly Carson, M.D.Atlanta, GA 303421801859327
- Robert Eisenband, MDAtlanta, GA 303421053301390
- Richard Friedman, MDAtlanta, GA 303421518958537
- Luis Galvez, MDAtlanta, GA 303421326039231
- Agnes Han, M.D.Atlanta, GA 303421841268364
- Hetal Karsan, MDAtlanta, GA 303421063402881
- Russell Kramer, MDAtlanta, GA 303421861476830
Common questions
What is Thomas P. McGahan, M.D.'s NPI number?
Thomas P. McGahan, M.D.'s National Provider Identifier (NPI) is 1861455487, issued on Apr 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas P. McGahan, M.D. located?
The NPPES record lists a practice address at 5669 Peachtree Dunwoody RD NE, Atlanta, GA, 30342. Phone: (404) 255-4333. Providers update this record themselves, so call before visiting.
How can I verify Thomas P. McGahan, M.D.'s license?
NPPES lists Georgia license number 033861, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas P. McGahan, M.D. prescribe under Medicare Part D?
In 2024, Thomas P. McGahan, M.D. had 364 Medicare Part D claims for 189 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Thomas P. McGahan, M.D.'s MIPS final score?
The 2023 MIPS final score is 92.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.