Quick answers
- Does Ernesto R. Drelichman accept Medicare assignment?
- Yes. Medicare's clinician data says Ernesto R. Drelichman 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 Ernesto R. Drelichman see?
- In 2024, CMS data shows 206 Original Medicare patients and 1,718 services for Ernesto R. Drelichman. This counts Original Medicare only and measures volume, not quality.
- What is Ernesto R. Drelichman's NPI number?
- 1801839899. 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 Ernesto R. Drelichman, 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 | 206 |
|---|---|
| Services billed to Medicare | 1,718 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)40 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)39 services
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)37 services
- Diagnostic exam of anus using an endoscope (46600)27 services
- Colorectal cancer screening; colonoscopy on individual at high risk (G0105)27 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%
- Arthritis42%
- Diabetes28%
- Ischemic heart disease23%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)23%
Hospitals where Ernesto R. Drelichman works
Medicare's Facility Affiliation Data lists Ernesto R. Drelichman 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
- Ascension Providence Rochester HospitalRochester, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230254
- Beaumont Hospital Royal OakRoyal Oak, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230130
- Henry Ford Health St John HospitalDetroit, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230165
Practice locations
Addresses where Ernesto R. Drelichman is enrolled with Medicare (CMS data updated October 2, 2026).
- 1135 W University Dr, Suite 355Rochester, MI 48307 (248) 793‑8900
- 43900 Garfield Rd, Suite 222Clinton Township, MI 48038 (586) 286‑0050
- 46591 Romeo Plank RdMacomb, MI 48044
Group practices
Medicare enrollment lists Ernesto R. Drelichman as a member of this group (CMS data updated October 2, 2026).
- Henry Ford Cornerstone Medical Group65 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in Michigan →
Other colorectal surgeons in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Other clinicians in Henry Ford Cornerstone Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1997 (29 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801839899 |
| 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