Ammar Hassan, D.O.
Gastroenterology Physician · Munster, IN
Ammar Hassan, D.O. is a gastroenterology physician with a practice address in Munster, Indiana, and NPI 1023428877, issued on May 2, 2014. Check the license (Indiana 2005989A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Ammar Hassan
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 2005989A IN
02005989A IN
036153911 IL
Self-reported in NPPES; status is on the state search - Practice location
- 9410 Calumet Ave Ste 401, Munster, IN 46321
- Phone
- (219) 922-4900
- Enumerated
- May 2, 2014
- Record last updated
- Dec 15, 2025
- Fax
- (219) 836-9922
- Medicare enrollment
- Enrolled (PECOS I20260120002065); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2014
- Entity
- Type 1 · individual
Also registered at 9410 Calumet Ave Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ted George Achufusi, MDGastroenterology Physician1053809392
- Bayan Alsuleiman, MDGastroenterology Physician1760821748
- Cristina Borsilli, NPFamily Nurse Practitioner1629739131
- Amara Dickerson, APNAcute Care Nurse Practitioner1043722622
- Mohammad Elomari, APNFamily Nurse Practitioner1831709153
- Mohsen Khan, DOGastroenterology Physician1316203367
Verify Ammar Hassan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 2005989ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% more Medicare Part D claims than the average gastroenterology physician in 2024
1,476 Medicare Part D claims for 761 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium392 claims
- Gavilyte-G278 claims
- Clenpiq102 claims
- Famotidine63 claims
- Peg-3350 And Electrolytes63 claims
- Dicyclomine Hcl60 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: $897.23
45 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 2 group practices
- Dalal Medical CorporationMunster, IN
- Prime Healthcare Illinois Medical Group LLCRomeoville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Indiana
There are 372 gastroenterology physician records in Indiana.
Other gastroenterology physician records in Indiana
- Khaled Abdeljawad, M.DIndianapolis, IN1285947416
- Priya AbhyankarDanville, IN1457988867
- Mohammed Abu-Rumaileh, MDIndianapolis, IN1912609876
- Murad Aburajab, MDCarmel, IN1376750745
- Ted George Achufusi, MDMunster, IN1053809392
- Ashish Aggarwal, M.D.Indianapolis, IN1679705008
- Amarnath Agrawal, M.D.Chesterton, IN1093785701
- Naveed Ahmad, MDLafayette, IN1588874630
- Usman Ahmad, M.D.Anderson, IN1245494392
- Furqan Ahmed, M.D.Indianapolis, IN1538100300
Common questions
What is Ammar Hassan, D.O.'s NPI number?
Ammar Hassan, D.O.'s National Provider Identifier (NPI) is 1023428877, issued on May 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ammar Hassan, D.O. located?
The NPPES record lists a practice address at 9410 Calumet Ave Ste 401, Munster, IN, 46321. Phone: (219) 922-4900. Providers update this record themselves, so call before visiting.
How can I verify Ammar Hassan, D.O.'s license?
NPPES lists Indiana license number 2005989A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ammar Hassan, D.O. prescribe under Medicare Part D?
In 2024, Ammar Hassan, D.O. had 1,476 Medicare Part D claims for 761 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.