Quick answers
- Does Andrea L. Dreffs accept Medicare assignment?
- Yes. Medicare's clinician data says Andrea L. Dreffs 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 Andrea L. Dreffs see?
- In 2024, CMS data shows 275 Original Medicare patients and 1,518 services for Andrea L. Dreffs. This counts Original Medicare only and measures volume, not quality.
- What is Andrea L. Dreffs's NPI number?
- 1942452677. 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 Andrea L. Dreffs, 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 | 275 |
|---|---|
| Services billed to Medicare | 1,518 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)377 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)311 services
- Destruction of precancer skin growth, 1 growth (17000)186 services
- Biopsy of related skin growth, first growth (11102)169 services
- Destruction of skin growth, 1-14 growths (17110)143 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 cholesterol75%
- High blood pressure72%
- Arthritis42%
- Ischemic heart disease31%
- Anxiety24%
- Diabetes23%
Practice locations
Addresses where Andrea L. Dreffs is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1080 S Van Dyke Rd, Suite 400Bad Axe, MI 48413 (810) 245‑7766
- 1135 W University Dr, Suite 225Rochester Hills, MI 48307 (248) 650‑1510
- 1135 W University Dr, Suite 330Rochester Hills, MI 48307 (248) 650‑1510
- 3273 Davison Rd, Suite 5Lapeer, MI 48446 (810) 245‑7766
- 37605 Pembroke AveLivonia, MI 48152 (734) 591‑7931
Group practices
Medicare enrollment lists Andrea L. Dreffs as a member of this group (CMS data updated October 2, 2026).
- Pinnacle Dermatology SC148 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Bad Axe
Clinicians with the same Medicare primary specialty in Bad Axe, MI — not a recommendation.
Other clinicians in Pinnacle Dermatology SC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | Wayne State University School Of Medicine |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942452677 |
| 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
- 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