Quick answers
- Does Leonid M. Shamban accept Medicare assignment?
- Yes. Medicare's clinician data says Leonid M. Shamban accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Leonid M. Shamban see?
- In 2024, CMS data shows 383 Original Medicare patients and 9,518 services for Leonid M. Shamban. This counts Original Medicare only and measures volume, not quality.
- What is Leonid M. Shamban's NPI number?
- 1225398431. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Leonid M. Shamban, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 383 |
|---|---|
| Services billed to Medicare | 9,518 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, vedolizumab, intravenous, 1 mg (J3380)7,200 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)434 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)114 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)99 services
- Biopsy of large bowel using a flexible endoscope (45380)96 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Ischemic heart disease38%
- Diabetes35%
- Anxiety33%
Hospitals where Leonid M. Shamban works
Medicare's Facility Affiliation Data lists Leonid M. Shamban at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension Providence Hospital, Southfield and NoviSouthfield, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230019
- Beaumont Hospital - Grosse PointeGrosse Pointe, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230089
- Henry Ford Health HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230053
- Henry Ford Health St John HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230165
- Henry Ford Health Warren HospitalWarren, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230195
Practice locations
Addresses where Leonid M. Shamban is enrolled with Medicare (CMS data updated October 2, 2026).
- 22250 Providence Dr, Suite 301aSouthfield, MI 48075 (248) 849‑3281
- 28963 Little Mack Ave, Suite 101Saint Clair Shores, MI 48081 (586) 447‑0700
Group practices
Medicare enrollment lists Leonid M. Shamban as a member of these groups (CMS data updated October 2, 2026).
- Henry Ford Health Providence Hospital375 clinicians in the group
- Gi Medical Assoc PC11 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Southfield
Clinicians with the same Medicare primary specialty in Southfield, MI — not a recommendation.
Other clinicians in Henry Ford Health Providence Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225398431 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians