Michael S. Greiner, DC, NPC
- Medicare patients, 2024
- 32
- Part D claims, 2024
- 639
- Industry payments
- $348
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 2243 12 Mile Rd, Warren, MI 48092
- Practice phone
- Call (586) 573-8100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Renova Surgical Center
Warren, Michigan
Find Michael Greiner's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Michael S. Greiner is a nurse practitioner in Warren, Michigan
Michael Greiner practices at Renova Surgical Center in Warren, Michigan.
Michael Greiner's NPI, 1942452453, was assigned on October 15, 2008. Michael Greiner holds Michigan license 4704370015.
- NPI
- 1942452453NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931263670
- NPI enumeration date
- October 15, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (586) 573-8100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 29
- Medical school graduation
- 2023
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael S. Greiner practices at Renova Surgical Center in Warren, Michigan
Michael Greiner's primary practice is Renova Surgical Center, at 2243 12 Mile Rd, Warren, MI 48092 in Macomb County. The practice phone is (586) 573-8100.
- Renova Surgical Center2243 12 Mile Rd, Warren, MI 48092 · Macomb CountyPhone(586) 573-8100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Michael S. Greiner is affiliated with 2 sites of care and 1 medical group
Michael Greiner's primary practice is Renova Surgical Center in Warren, Michigan. Dmand AI also links Michael Greiner to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Michael S. Greiner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Greiner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Renova Surgical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael S. Greiner is one of 2,742 nurse practitioners in Michigan
Nurse practitioner is Michael Greiner's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Michael Greiner is licensed in Michigan.
Specialties and state licenses
- Nurse practitioner, MichiganPrimary
Nurse practitioners near Michael Greiner
Counts of nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Michael S. Greiner treated 32 Medicare patients in 2024, average age 63
CMS counts 32 Medicare patients who saw Michael Greiner in 2024. The largest group is under 65, with 12 patients. 75% of them have arthritis, and 69% have high blood pressure. 47% are also on Medicaid. Their average risk score is 1.27, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Michael Greiner's median patient age at 55, with 54% women.
Michael Greiner's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Michael Greiner's Medicare patients, 2024
- Arthritis75%
- High blood pressure69%
- High cholesterol59%
- Diabetes47%
- Mood disorders34%
Share of Medicare patients with each condition. A patient can have several.
Michael Greiner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael S. Greiner wrote 639 Medicare Part D claims in 2024
In 2024, Michael Greiner wrote 639 Medicare Part D claims for 219 patients. 100% of them were for generic drugs.
Michael Greiner's Part D claims by kind of drug, 2024
- Generic637 claims100%
- Brand-name and other2 claims0%
Drug classes CMS tracks in Michael Greiner's Part D claims, 2024
- Opioids38%243 of 639 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Michael S. Greiner takes part in Medicare
Michael Greiner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Michael S. Greiner received $348 in industry payments in 2025
CMS Open Payments shows 9 general payments to Michael Greiner from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Saluda Medical Americas, Inc. paid the most, $273.
Companies that paid Michael Greiner the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Michael S. Greiner's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Michael S. Greiner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael S. Greiner's NPI number?
Michael S. Greiner's NPI number is 1942452453. It was assigned on October 15, 2008, and it is active in the NPI Registry.
What does Michael S. Greiner specialize in?
Michael S. Greiner is a nurse practitioner in Warren, Michigan. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Michael S. Greiner practice?
Michael Greiner practices at 2243 12 Mile Rd, Warren, MI 48092. Michael Greiner's primary practice is Renova Surgical Center in Warren, Michigan. Dmand AI also links Michael Greiner to 1 group practice or clinic and 1 medical group.
What is Michael S. Greiner's office phone number?
The practice phone on file for Michael Greiner is (586) 573-8100.
What is Michael S. Greiner's medical license number?
Michael Greiner holds Michigan license 4704370015.
Does Michael S. Greiner accept Medicare?
Yes. CMS lists Michael Greiner as accepting Medicare assignment.
How many Medicare patients does Michael S. Greiner see?
CMS counts 32 Medicare patients who saw Michael Greiner in 2024, with an average age of 63.
Has Michael S. Greiner received payments from drug or device companies?
CMS Open Payments shows $348 in general payments to Michael Greiner from 4 companies from 2025 to 2025. The largest total came from Saluda Medical Americas, Inc.
How long has Michael S. Greiner been practicing?
Michael Greiner graduated from medical school in 2023, 3 years ago.
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