Irena Zalewska, MD
Gastroenterology Physician · St Clair Shores, MI
Irena Zalewska, MD is a gastroenterology physician with a practice address in St Clair Shores, Michigan, and NPI 1407846751, issued on Oct 27, 2005. Check the license (Michigan 4301072116, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Irena Zalewska
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 4301072116 MI
Self-reported in NPPES; status is on the state search - Practice location
- 28963 Little Mack Ave, St Clair Shores, MI 48081
- Phone
- (586) 447-0700
- Enumerated
- Oct 27, 2005
- Record last updated
- Jun 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (586) 498-0707
- Medicaid ID
- 459576110 MI
- Medicare enrollment
- Enrolled (PECOS I20040622001358); accepts Medicare assignment
- Medical or professional school
- Wayne State University School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 550 in Michigan → Look up another NPI →
Also registered at 28963 Little Mack Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohammed Barawi, MDGastroenterology Physician1972584191
- Satyajit Daniel, MDGastroenterology Physician1770564999
- Barbara Lawson, RN MSN NPCNurse Practitioner1861473084
- Sudhanshu Patel, MDGastroenterology Physician1104816370
- Vasilios Pozios, MDGastroenterology Physician1639169881
- Ketan Rana, MDGastroenterology Physician1467442616
Verify Irena Zalewska in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301072116Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% more Medicare Part D claims than the average gastroenterology physician in 2024
1,073 Medicare Part D claims for 312 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Famotidine184 claims
- Pantoprazole Sodium168 claims
- Omeprazole124 claims
- Rabeprazole Sodium102 claims
- Sucralfate73 claims
- Mesalamine44 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,965.27
83 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
- Henry Ford Health SystemSterling Heights, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irena Zalewska among 550 gastroenterology physician records in Michigan
Irena Zalewska, MD is one of 550 gastroenterology physician records with a practice address in Michigan. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1998 · median 2003 among the 415 with a school on file
- Record last updated2010 · 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 gastroenterology physician records list a practice address in St Clair Shores
They are 9 of the 164 NPPES records with a practice address in St Clair Shores, and 550 gastroenterology physician records in Michigan.
All 550 in Michigan → Every provider in St Clair Shores → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mohammed Barawi, MDSt Clair Shores, MI 480811972584191
- Kerri Bewick, D.O.Saint Clair Shores, MI 480811912103755
- Richard Cascio, MDSt Clair Shores, MI 480811801886155
- Satyajit Daniel, MDSt Clair Shores, MI 480811770564999
- Harivallabh Pandya, M.D.St Clair Shores, MI 480811356381347
- Sudhanshu Patel, MDSt Clair Shores, MI 480811104816370
- Vasilios Pozios, MDSt Clair Shores, MI 480811639169881
- Ketan Rana, MDSt Clair Shores, MI 480811467442616
Common questions
What is Irena Zalewska, MD's NPI number?
Irena Zalewska, MD's National Provider Identifier (NPI) is 1407846751, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Irena Zalewska, MD located?
The NPPES record lists a practice address at 28963 Little Mack Ave, St Clair Shores, MI, 48081. Phone: (586) 447-0700. Providers update this record themselves, so call before visiting.
How can I verify Irena Zalewska, MD's license?
NPPES lists Michigan license number 4301072116, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Irena Zalewska, MD prescribe under Medicare Part D?
In 2024, Irena Zalewska, MD had 1,073 Medicare Part D claims for 312 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Irena Zalewska, 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.