Dr. James Malleis, MD
- Medicare services, 2024
- 1,455
- Medicare patients, 2024
- 590
- MIPS score, 2024
- 90
- Hospital affiliations
- 5
- Industry payments
- $29
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Malleis' 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.
Dr. James Malleis is a pathologist in Grand Rapids, Michigan
Dr. Malleis practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Malleis' NPI, 1255836847, was assigned on March 27, 2018. Dr. Malleis graduated from Wayne State University School of Medicine in 2018. Dr. Malleis holds Michigan license 4301509236.
- NPI
- 1255836847NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648535229
- NPI enumeration date
- March 27, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Malleis practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. Malleis' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Dr. James Malleis is affiliated with 6 sites of care and 1 medical group
Dr. Malleis' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dr. Malleis is also affiliated with Corewell Health Lakeland Hospitals - Saint Joseph Hospital. The medical group on file is Michigan Pathology Specialists. Dmand AI also links Dr. Malleis to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James Malleis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Malleis practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Corewell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. James Malleis is one of 386 pathologists in Michigan
Anatomic pathology and clinical pathology is Dr. Malleis' primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Malleis is licensed in Michigan.
Specialties and state licenses
- Anatomic pathology and clinical pathology, MichiganPrimary
Pathologists near Dr. Malleis
Counts of pathologists 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
Dr. James Malleis billed Medicare for 1,455 services in 2024
CMS data shows 1,455 Medicare services from Dr. Malleis across 10 procedure codes in 2024, for 590 Medicare patients. Medicare paid $45,141 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Malleis' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4732024: 1,455208%
Dr. Malleis compared with the Michigan median for pathologists, 2024
- Dr. Malleis
- Michigan median
- Medicare services
- 1,455vs 99047% above
- Medicare patients
- 590vs 44333% above
Medians across 401 pathologists in Michigan with Dmand AI profiles that report each measure.
Dr. Malleis' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Malleis?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Malleis and other pathologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Malleis treated 590 Medicare patients in 2024, average age 71
CMS counts 590 Medicare patients who saw Dr. Malleis in 2024. The largest group is 65 to 74, with 312 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 17% 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 Dr. Malleis' median patient age at 61, with 53% women.
Dr. Malleis' Medicare patients by age, 2024
Dr. Malleis' Medicare patients by sex, 2024
- Women32755%
- Men26345%
Chronic conditions among Dr. Malleis' Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis46%
- Anxiety29%
- Diabetes29%
- Mood disorders29%
- Cancer27%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Malleis' 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
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James Malleis scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Malleis for performance year 2024, reported as part of a group. Dr. Malleis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Malleis' MIPS scores, performance year 2024
- 90of 100Final score
- 91.3of 100Quality
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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.
Dr. James Malleis received $29 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Malleis from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $29.
Companies that paid Dr. Malleis the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James Malleis graduated from Wayne State University School of Medicine
Dr. Malleis graduated from Wayne State University School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Malleis'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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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)Clinician Public Reporting: Overall MIPS Performance (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 Dr. James Malleis
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. James Malleis' NPI number?
Dr. James Malleis' NPI number is 1255836847. It was assigned on March 27, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. James Malleis?
Dr. James Malleis is a pathologist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. James Malleis practice?
Dr. Malleis practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Malleis' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Dr. Malleis to 3 hospitals and 1 group practice or clinic.
What is Dr. James Malleis' office phone number?
The practice phone on file for Dr. Malleis is (616) 391-1774.
What is Dr. James Malleis' medical license number?
Dr. Malleis holds Michigan license 4301509236.
Which hospitals is Dr. James Malleis affiliated with?
Dr. Malleis practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Dr. Malleis is also affiliated with Corewell Health Lakeland Hospitals - Saint Joseph Hospital. Dmand AI links Dr. Malleis to 3 more hospitals.
What medical group is Dr. James Malleis part of?
Dr. Malleis is linked to Michigan Pathology Specialists.
Does Dr. James Malleis accept Medicare?
Yes. CMS data shows Dr. Malleis billed Medicare for 1,455 services in 2024, and Dr. Malleis accepts Medicare assignment.
What is Dr. James Malleis' MIPS score?
Dr. Malleis' MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does Dr. James Malleis see?
CMS counts 590 Medicare patients who saw Dr. Malleis in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. James Malleis bill to Medicare?
In 2024, Dr. Malleis' most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88307).
Where did Dr. James Malleis go to medical school?
Dr. Malleis graduated from Wayne State University School of Medicine in 2018.
Has Dr. James Malleis received payments from drug or device companies?
CMS Open Payments shows $29 in general payments to Dr. Malleis from 1 company from 2024 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. James Malleis been practicing?
Dr. Malleis graduated from medical school in 2018, 8 years ago.
Selling to anatomic pathology and clinical pathology practices?
See pathologists in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card