Paul James Grenier, OD
- Medicare patients, 2024
- 235
- Part D claims, 2024
- 129
- Hospital affiliations
- 1
- Industry payments
- $144
- Medical group
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Paul Grenier'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.
Paul James Grenier is an optometrist in Ann Arbor, Michigan
Paul Grenier practices at University Hospital in Ann Arbor, Michigan.
Paul Grenier's NPI, 1386608081, was assigned on April 12, 2006. Paul Grenier graduated from Illinois College of Optometry at Chicago in 2002. Paul Grenier holds Michigan license 4901004452.
- NPI
- 1386608081NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274425152
- NPI enumeration date
- April 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Paul James Grenier practices at University Hospital in Ann Arbor, Michigan
Paul Grenier's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Paul James Grenier is affiliated with 3 sites of care and 1 medical group
Paul Grenier's primary practice is University Hospital in Ann Arbor, Michigan. Paul Grenier is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dmand AI also links Paul Grenier to 1 more group practice or clinic, named with a free account. Paul Grenier's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Paul James Grenier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Paul Grenier practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Paul James Grenier is one of 1,416 optometrists in Michigan
Optometrist is Paul Grenier's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Dmand AI has Paul Grenier's licenses on file in 2 states: Michigan and Illinois.
Specialties and state licenses
- Optometrist, MichiganPrimary
- Illinois license
Optometrists near Paul Grenier
Counts of optometrists 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
Paul James Grenier treated 235 Medicare patients in 2024, average age 72
CMS counts 235 Medicare patients who saw Paul Grenier in 2024. The largest group is 65 to 74, with 113 patients. 72% of them have high blood pressure, and 62% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Paul Grenier's median patient age at 61, with 58% women.
Paul Grenier's Medicare patients by age, 2024
Paul Grenier's Medicare patients by sex, 2024
- Women13859%
- Men9741%
Chronic conditions among Paul Grenier's Medicare patients, 2024
- High blood pressure72%
- High cholesterol62%
- Arthritis39%
- Diabetes39%
- Anxiety20%
- Chronic kidney disease20%
- Ischemic heart disease20%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Paul Grenier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Paul James Grenier wrote 129 Medicare Part D claims in 2024
In 2024, Paul Grenier wrote 129 Medicare Part D claims for 49 patients. 44% of them were for generic drugs.
Paul Grenier's Part D claims by kind of drug, 2024
- Generic57 claims44%
- Brand-name72 claims56%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Paul James Grenier takes part in Medicare
Paul Grenier 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Paul James Grenier received $144 in industry payments in 2025
CMS Open Payments shows 1 general payment to Paul Grenier from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $144.
Companies that paid Paul Grenier the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Paul James Grenier graduated from Illinois College of Optometry at Chicago
Paul Grenier graduated from Illinois College of Optometry at Chicago in 2002.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Paul James Grenier'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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 Paul James Grenier
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Paul James Grenier's NPI number?
Paul James Grenier's NPI number is 1386608081. It was assigned on April 12, 2006, and it is active in the NPI Registry.
What does Paul James Grenier specialize in?
Paul James Grenier is an optometrist in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Paul James Grenier practice?
Paul Grenier practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Paul Grenier's primary practice is University Hospital in Ann Arbor, Michigan. Dmand AI also links Paul Grenier to 1 group practice or clinic.
What is Paul James Grenier's office phone number?
The practice phone on file for Paul Grenier is (734) 936-4000.
What is Paul James Grenier's medical license number?
Paul Grenier holds Michigan license 4901004452, one of the licenses on file in 2 states.
Which states has Paul James Grenier been licensed in?
Dmand AI has state licenses on file for Paul Grenier in Michigan and Illinois.
Which hospitals is Paul James Grenier affiliated with?
Paul Grenier is affiliated with University Hospital.
What medical group is Paul James Grenier part of?
Paul Grenier is linked to University of Michigan Health.
Does Paul James Grenier accept Medicare?
Yes. CMS lists Paul Grenier as accepting Medicare assignment.
How many Medicare patients does Paul James Grenier see?
CMS counts 235 Medicare patients who saw Paul Grenier in 2024, with an average age of 72.
Show 3 more questionsShow fewer questions
Where did Paul James Grenier go to medical school?
Paul Grenier graduated from Illinois College of Optometry at Chicago in 2002.
Has Paul James Grenier received payments from drug or device companies?
CMS Open Payments shows $144 in general payments to Paul Grenier from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Paul James Grenier been practicing?
Paul Grenier graduated from medical school in 2002, 24 years ago.
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