Stephen T. Ang, MD
Gastroenterology Physician · Centralia, IL
Stephen T. Ang, MD is a gastroenterology physician with a practice address in Centralia, Illinois, and NPI 1346251071, issued on Aug 10, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Stephen T. Ang
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- Practice location
- 1054 M L King Dr, Centralia, IL 62801
- Phone
- (618) 532-1688
- Enumerated
- Aug 10, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (618) 532-1689
- Medicare enrollment
- Enrolled (PECOS I20050427000717); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 1054 M L King Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Suresh Krishnamoorthy, M.D.Geriatric Medicine (Internal Medicine) Physician1760440580
Verify Stephen T. Ang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,398 Medicare Part D claims for 705 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium731 claims
- Omeprazole428 claims
- Sod Sulf-Potass Sulf-Mag Sulf176 claims
- Linzess144 claims
- Colestipol Hcl138 claims
- Cholestyramine137 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,011.20
46 payments; by number, the most common kind was food and beverage; the largest payer was Ironwood Pharmaceuticals, 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.
Stephen T. Ang among 887 gastroenterology physician records in Illinois
Stephen T. Ang, MD is one of 887 gastroenterology physician records with a practice address in Illinois. 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 15% of them.
- NPI issued2006 · 15% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1991 · median 2003 among the 643 with a school on file
- Record last updated2007 · 49% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Centralia → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Majd Khadra, MDSpringfield, IL 627811043952724
- Saeed Zamir, M.D.Du Quoin, IL 628321134113400
- Fadi Annaba, MD.Springfield, IL 627031154353217
- Sailaja Cheruku, M.D.Springfield, IL 627031578659496
- Ashish Chopra, M.D.Springfield, IL 627031497727234
- Ruchi Gupta, M.D.Springfield, IL 627031558413302
- Mark Harrison, M.D.Springfield, IL 627031831295666
- Peter Karras, M.D.Springfield, IL 627031114025566
Common questions
What is Stephen T. Ang, MD's NPI number?
Stephen T. Ang, MD's National Provider Identifier (NPI) is 1346251071, issued on Aug 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen T. Ang, MD located?
The NPPES record lists a practice address at 1054 M L King Dr, Centralia, IL, 62801. Phone: (618) 532-1688. Providers update this record themselves, so call before visiting.
How can I verify Stephen T. Ang, MD's license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen T. Ang, MD prescribe under Medicare Part D?
In 2024, Stephen T. Ang, MD had 2,398 Medicare Part D claims for 705 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Stephen T. Ang, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.