John H. Ahn, DO
Gastroenterology Physician · Safety Harbor, FL
John H. Ahn, DO is a gastroenterology physician with a practice address in Safety Harbor, Florida, and NPI 1598790701, issued on Jul 12, 2006. Check the license (Florida OS7005, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- John H. Ahn
- Credential
- DO
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- OS7005 FL
Self-reported in NPPES; status is on the state search - Practice location
- 1840 Mease Drive, Safety Harbor, FL 34695
- Phone
- (727) 796-4166
- Enumerated
- Jul 12, 2006
- Record last updated
- May 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (727) 669-5849
- Medicaid ID
- 300384100 FL
- Medicare enrollment
- Enrolled (PECOS I20040909000771); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1988
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,513 in Florida → Look up another NPI →
Also registered at 1840 Mease Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Bergner, M.D.Urology Physician1396738407
- David Berry, MDSpecialist1477552230
- Alan Camp, M.D.Cardiovascular Disease Physician1871555243
- Adria Condino, DOPediatric Gastroenterology Physician1215998117
- Karen Crowder, ARNPNurse Practitioner1063668820
- Lonnie Klein, MDUrology Physician1437141645
Verify John H. Ahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license OS7005Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% more Medicare Part D claims than the average gastroenterology physician in 2024
836 Medicare Part D claims for 302 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Pantoprazole Sodium129 claims
- Famotidine100 claims
- Sod Sulf-Potass Sulf-Mag Sulf87 claims
- Omeprazole75 claims
- Esomeprazole Magnesium64 claims
- Amitriptyline Hcl46 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.
Industry payments in 2024: $210.49
6 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- West Central Gastroenterology LLPSafety Harbor, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John H. Ahn among 1,513 gastroenterology physician records in Florida
John H. Ahn, DO is one of 1,513 gastroenterology physician records with a practice address in Florida. 87% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 45% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1988 · median 2000 among the 1,156 with a school on file
- Record last updated2021 · 52% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Florida
There are 1,513 gastroenterology physician records in Florida.
All 1,513 in Florida → Every provider in Safety Harbor → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Pothen Jacob, MDSafety Harbor, FL 346951467423004
- Jermaine Ralph, M.D.Tarpon Springs, FL 346891336302223
- Nirmala Sivaprakasapillai, MDTarpon Springs, FL 346891477729408
- Noah Devicente, M.D.Palm Harbor, FL 346841336237924
- Parth Joshi, M.DPalm Harbor, FL 346841689964355
- Vikesh Khanijow, M.D.Palm Harbor, FL 346841962768531
- Alan Klibanoff, M.D.Palm Harbor, FL 346841740238989
- Saritza Mendoza, M.D.Palm Harbor, FL 346841083145478
Common questions
What is John H. Ahn, DO's NPI number?
John H. Ahn, DO's National Provider Identifier (NPI) is 1598790701, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John H. Ahn, DO located?
The NPPES record lists a practice address at 1840 Mease Drive, Safety Harbor, FL, 34695. Phone: (727) 796-4166. Providers update this record themselves, so call before visiting.
How can I verify John H. Ahn, DO's license?
NPPES lists Florida license number OS7005, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John H. Ahn, DO prescribe under Medicare Part D?
In 2024, John H. Ahn, DO had 836 Medicare Part D claims for 302 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
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.