Gene Lee Chang, M.D.
Gastroenterology Physician · Munster, IN
Gene Lee Chang, M.D. is a gastroenterology physician with a practice address in Munster, Indiana, and NPI 1033240411, issued on Mar 8, 2007. Check the license on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Gene Lee Chang
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- Practice location
- 9030 Columbia Ave, Munster, IN 46321
- Phone
- (219) 836-6002
- Enumerated
- Mar 8, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (219) 836-6003
- Medicare enrollment
- Enrolled (PECOS I20071026000106); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Medicine And Surgery, 2001
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 372 in Indiana → Look up another NPI →
Verify Gene Lee Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of IndianaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% more Medicare Part D claims than the average gastroenterology physician in 2024
987 Medicare Part D claims for 525 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Pantoprazole Sodium418 claims
- Sod Sulf-Potass Sulf-Mag Sulf182 claims
- Sutab79 claims
- Omeprazole56 claims
- Gavilyte-C37 claims
- Famotidine23 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: $3,292.15
44 payments; by number, the most common kind was food and beverage; the largest payer was Braintree Laboratories, 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
- Community Care Network IncMunster, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gene Lee Chang among 372 gastroenterology physician records in Indiana
Gene Lee Chang, M.D. is one of 372 gastroenterology physician records with a practice address in Indiana. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 53% of them.
- NPI issued2007 · 53% of these records are older, 36% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2001 · median 2001 among the 272 with a school on file
- Record last updated2007 · 42% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Indiana
There are 372 gastroenterology physician records in Indiana.
All 372 in Indiana → Every provider in Munster → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Bayan Alsuleiman, MDMunster, IN 463211760821748
- Anoop Appannagari, M.D.Munster, IN 463211912136979
- Hadi Atassi, D.O.Munster, IN 463211407218621
- Joel Cahan, MDMunster, IN 463211699874156
- Ammar Hassan, D.O.Munster, IN 463211023428877
- David Herbstman, MDMunster, IN 463211841399300
- Mohsen Khan, DOMunster, IN 463211316203367
- John Kniaz, DOMunster, IN 463211659470110
Common questions
What is Gene Lee Chang, M.D.'s NPI number?
Gene Lee Chang, M.D.'s National Provider Identifier (NPI) is 1033240411, issued on Mar 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gene Lee Chang, M.D. located?
The NPPES record lists a practice address at 9030 Columbia Ave, Munster, IN, 46321. Phone: (219) 836-6002. Providers update this record themselves, so call before visiting.
How can I verify Gene Lee Chang, M.D.'s license?
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 Gene Lee Chang, M.D. prescribe under Medicare Part D?
In 2024, Gene Lee Chang, M.D. had 987 Medicare Part D claims for 525 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.