Antibodies, AntiphospholipidAntiphospholipid SyndromeExtracellular Traps
Dr. Robert Grenn, MD
NPI1366079915
- Part D claims, 2024
- 88
- Publications
- 4
- Hospital affiliations
- 2
- Industry payments
- $229
- Medical group
- 1
- Practice address
- 30901 Palmer Rd, Westland, MI 48186
- Practice phone
- Call (734) 367-8400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Robert Grenn is a psychiatrist in Westland, Michigan
Dr. Grenn practices at Walter Reuther Psychiatric Hospital in Westland, Michigan, part of State of Michigan.
Dr. Grenn's NPI, 1366079915, was assigned on March 24, 2020. Dr. Grenn holds Michigan license 4301508925.
NPI and contact details
- NPI
- 1366079915NPI Registry (opens in a new tab)
- NPI enumeration date
- March 24, 2020
- NPI status
- Active
- Practice phone
- (734) 367-8400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert Grenn practices at Walter Reuther Psychiatric Hospital in Westland, Michigan
Dr. Grenn's primary practice is Walter Reuther Psychiatric Hospital, at 30901 Palmer Rd, Westland, MI 48186 in Wayne County. The practice phone is (734) 367-8400.
- Walter Reuther Psychiatric Hospital30901 Palmer Rd, Westland, MI 48186 · Wayne CountyPhone(734) 367-8400
Source: Dmand AI Affiliation Data
Dr. Robert Grenn is affiliated with 2 sites of care and 1 medical group
Dr. Grenn's primary practice is Walter Reuther Psychiatric Hospital in Westland, Michigan, part of State of Michigan. Dr. Grenn is also affiliated with Caro Psychiatric Hospital. The medical group on file is Michigan Veteran Homes at Chesterfield Township. Dr. Grenn's employer is on file too: a hospital.
Caro Psychiatric HospitalMichigan Veteran Homes at Chesterfield TownshipEmployer: hospitalName with a free account
See all 3 affiliations for Dr. GrennSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Robert Grenn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grenn practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Walter Reuther Psychiatric Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Grenn is one of 1,337 psychiatrists in Michigan
Psychiatry is Dr. Grenn's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Grenn is licensed in Michigan.
Specialties and state licenses
- Psychiatry, MichiganPrimary
Psychiatrists near Dr. Grenn
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
1,337psychiatrists in Michigan13psychiatrists in Westland10psychiatrists at Walter Reuther Psychiatric Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert Grenn's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Grenn's median patient age at 58, with 80% women.
Dr. Grenn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. Robert Grenn wrote 88 Medicare Part D claims in 2024
In 2024, Dr. Grenn wrote 88 Medicare Part D claims for 24 patients. 93% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $99 in total drug cost. In 2023, CMS named 299 claims across 14 drugs.
Part D claims, 202488
Drugs named by CMS1
Total drug cost$99
Part D patients24
Dr. Grenn's Part D claims by kind of drug, 2024
- Generic82 claims93%
- Brand-name and other6 claims7%
Dr. Grenn's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2992024: 1296%
Drugs named by CMS: 1 in 2024, 14 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Robert Grenn has 4 publications on record
Dmand AI links 4 papers to Dr. Grenn, published from 2014 to 2017. 2016 was the busiest year, with 2. The most frequent topics are Antibodies, Antiphospholipid, Antiphospholipid Syndrome and Mice, Knockout. Dr. Grenn's most frequent co-authors are Jason S. Knight, MD, Paula L. Bockenstedt, MD and Daniel T. Eitzman, MD.
Papers4
Years published2014 to 2017
Dr. Grenn's papers by year, 2014 to 2017
Topics Dr. Grenn writes about most
- Antibodies, Antiphospholipid
- Antiphospholipid Syndrome
- Mice, Knockout
- Neutrophils
Dr. Grenn's most frequent co-authors
- Jason S. Knight, MD4 shared papers
- Paula L. Bockenstedt, MD2 shared papers
- Daniel T. Eitzman, MD2 shared papers
Recent publications by Dr. Grenn
Antibodies, AntiphospholipidAntiphospholipid SyndromeHydroxychloroquine
Aortic DiseasesApolipoproteins EAtherosclerosis
See who Dr. Grenn researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grenn works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Grenn received $229 in industry payments from 2023 to 2024
CMS Open Payments shows 2 general payments to Dr. Grenn from 2 drug and device companies from 2023 to 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $125.
General payments to Dr. Grenn by program year, 2023 to 2024
Companies that paid Dr. Grenn the most, 2023 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Robert Grenn'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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 Dr. Robert Grenn
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Robert Grenn's NPI number?
Dr. Robert Grenn's NPI number is 1366079915. It was assigned on March 24, 2020, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Grenn?
Dr. Robert Grenn is a psychiatrist in Westland, Michigan. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Robert Grenn practice?
Dr. Grenn practices at 30901 Palmer Rd, Westland, MI 48186. Dr. Grenn's primary practice is Walter Reuther Psychiatric Hospital in Westland, Michigan, part of State of Michigan.
What is Dr. Robert Grenn's office phone number?
The practice phone on file for Dr. Grenn is (734) 367-8400.
What is Dr. Robert Grenn's medical license number?
Dr. Grenn holds Michigan license 4301508925.
Which hospitals is Dr. Robert Grenn affiliated with?
Dr. Grenn practices at Walter Reuther Psychiatric Hospital in Westland, Michigan. Dr. Grenn is also affiliated with Caro Psychiatric Hospital.
What medical group is Dr. Robert Grenn part of?
Dr. Grenn is linked to Michigan Veteran Homes at Chesterfield Township.
What drugs does Dr. Robert Grenn prescribe most?
In 2024 Medicare Part D data, Dr. Grenn's most prescribed drugs by claims were Trazodone HCl.
Has Dr. Robert Grenn received payments from drug or device companies?
CMS Open Payments shows $229 in general payments to Dr. Grenn from 2 companies from 2023 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Robert Grenn been practicing?
Dr. Grenn's NPI was assigned in 2020.
Does Dr. Robert Grenn do research?
Dmand AI links 4 publications to Dr. Grenn, published from 2014 to 2017.
Who does Dr. Robert Grenn publish with?
Dr. Grenn's most frequent co-authors are Jason S. Knight, MD (4 shared papers), Paula L. Bockenstedt, MD (2 shared papers) and Daniel T. Eitzman, MD (2 shared papers).
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