Quick answers
- Does Lisa G. Dietz accept Medicare assignment?
- Yes. Medicare's clinician data says Lisa G. Dietz 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 Lisa G. Dietz see?
- In 2024, CMS data shows 248 Original Medicare patients and 1,389 services for Lisa G. Dietz. This counts Original Medicare only and measures volume, not quality.
- What is Lisa G. Dietz's NPI number?
- 1629067541. 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 Lisa G. Dietz, 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 | 248 |
|---|---|
| Services billed to Medicare | 1,389 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)225 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)192 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)161 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)129 services
- Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (90677)28 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 pressure67%
- Arthritis38%
- Diabetes27%
- Anxiety22%
- Ischemic heart disease19%
Hospitals where Lisa G. Dietz works
Medicare's Facility Affiliation Data lists Lisa G. Dietz 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 Rochester HospitalRochester, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230254
- McLaren FlintFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230141
- McLaren OaklandPontiac, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230207
- Trinity Health Oakland HospitalPontiac, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230029
Practice locations
Addresses where Lisa G. Dietz is enrolled with Medicare (CMS data updated October 2, 2026).
- 32901 23 Mile Rd, Suite 120Chesterfield, MI 48047 (586) 725‑4604
- 6507 Town Ctr Dr, Suite AClarkston, MI 48346 (248) 625‑9099
Group practices
Medicare enrollment lists Lisa G. Dietz as a member of this group (CMS data updated October 2, 2026).
- McLaren Medical Group213 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MI — not a recommendation.
Other clinicians in McLaren Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | College Of Osteo Med Of The Pacific At Pomona |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629067541 |
| 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