Dr. Joseph John Maleszewski, MD
- Medicare services, 2024
- 385
- Medicare patients, 2024
- 131
- Hospital affiliations
- 1
- Industry payments
- $66,931
- Medical group
- 1
- Practice address
- 1216 Second Street Southwest, Rochester, MN 55902
- Practice phone
- Call (507) 255-5123
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Maleszewski'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.
Dr. Joseph John Maleszewski is a pathologist in Rochester, Minnesota
Dr. Maleszewski practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.
Dr. Maleszewski's NPI, 1437204823, was assigned on January 24, 2007. Dr. Maleszewski graduated from Michigan State University College of Human Medicine in 2005. Dr. Maleszewski holds Minnesota license 52292.
- NPI
- 1437204823NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143374447
- NPI enumeration date
- January 24, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 255-5123
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph John Maleszewski practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota
Dr. Maleszewski's primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.
- Mayo Clinic Hospital, Saint Marys Campus1216 Second Street Southwest, Rochester, MN 55902 · Olmsted CountyPhone(507) 255-5123
Source: Dmand AI Affiliation Data
Dr. Joseph John Maleszewski is affiliated with 2 sites of care and 1 medical group
Dr. Maleszewski's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Maleszewski to 1 more hospice, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph John Maleszewski's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maleszewski practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital, Saint Marys Campus | Available with a free account |
| +1 more affiliated site | 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 Mayo Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph John Maleszewski is one of 260 pathologists in Minnesota
Anatomic pathology and clinical pathology is Dr. Maleszewski's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Maleszewski is licensed in Minnesota.
Specialties and state licenses
- Anatomic pathology and clinical pathology, MinnesotaPrimary
Pathologists near Dr. Maleszewski
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. Joseph John Maleszewski billed Medicare for 385 services in 2024
CMS data shows 385 Medicare services from Dr. Maleszewski across 9 procedure codes in 2024, for 131 Medicare patients. Medicare paid $9,091 for them.
Dr. Maleszewski's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 4082024: 3856%
Where Dr. Maleszewski's Medicare services took place, 2024
- In an office123%
- In a facility37397%
Dr. Maleszewski compared with the Minnesota median for pathologists, 2024
- Dr. Maleszewski
- Minnesota median
- Medicare services
- 385vs 97060% below
- Medicare patients
- 131vs 35763% below
Medians across 230 pathologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Maleszewski's 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. Maleszewski?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maleszewski and other pathologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph John Maleszewski treated 131 Medicare patients in 2024, average age 69
CMS counts 131 Medicare patients who saw Dr. Maleszewski in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.93, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Maleszewski's median patient age at 61, with 41% women.
Dr. Maleszewski's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Maleszewski's Medicare patients by sex, 2024
- Women4736%
- Men8464%
Chronic conditions among Dr. Maleszewski's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease68%
- Heart failure61%
- Chronic kidney disease58%
- Atrial fibrillation53%
- Arthritis41%
- Diabetes39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maleszewski'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
- Women41%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Joseph John Maleszewski takes part in Medicare
Dr. Maleszewski 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.
Dr. Joseph John Maleszewski received $66,931 in industry payments from 2021 to 2025
CMS Open Payments shows 59 general payments to Dr. Maleszewski from 3 drug and device companies from 2021 to 2025. Consulting fees make up the largest share, 84% of the total. Medical Device Business Services, Inc. paid the most, $31,970.
General payments to Dr. Maleszewski by program year, 2021 to 2025
General payments to Dr. Maleszewski by kind, 2021 to 2025
- Consulting fees$56,24084%
- Travel and lodging$9,68514%
- Food and beverage$1,0062%
Companies that paid Dr. Maleszewski the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph John Maleszewski graduated from Michigan State University College of Human Medicine
Dr. Maleszewski graduated from Michigan State University College of Human Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph John Maleszewski'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) |
| 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. Joseph John Maleszewski
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. Joseph John Maleszewski's NPI number?
Dr. Joseph John Maleszewski's NPI number is 1437204823. It was assigned on January 24, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph John Maleszewski?
Dr. Joseph John Maleszewski is a pathologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Joseph John Maleszewski practice?
Dr. Maleszewski practices at 1216 Second Street Southwest, Rochester, MN 55902. Dr. Maleszewski's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. Dmand AI also links Dr. Maleszewski to 1 hospice.
What is Dr. Joseph John Maleszewski's office phone number?
The practice phone on file for Dr. Maleszewski is (507) 255-5123.
What is Dr. Joseph John Maleszewski's medical license number?
Dr. Maleszewski holds Minnesota license 52292.
Which hospitals is Dr. Joseph John Maleszewski affiliated with?
Dr. Maleszewski practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota.
What medical group is Dr. Joseph John Maleszewski part of?
Dr. Maleszewski is linked to Mayo Clinic.
Does Dr. Joseph John Maleszewski accept Medicare?
Yes. CMS data shows Dr. Maleszewski billed Medicare for 385 services in 2024, and Dr. Maleszewski accepts Medicare assignment.
How many Medicare patients does Dr. Joseph John Maleszewski see?
CMS counts 131 Medicare patients who saw Dr. Maleszewski in 2024, with an average age of 69.
What services does Dr. Joseph John Maleszewski bill to Medicare?
In 2024, Dr. Maleszewski's most billed Medicare services were lab and pathology test (88313), lab and pathology test (88305) and lab and pathology test (88307).
Show 3 more questionsShow fewer questions
Where did Dr. Joseph John Maleszewski go to medical school?
Dr. Maleszewski graduated from Michigan State University College of Human Medicine in 2005.
Has Dr. Joseph John Maleszewski received payments from drug or device companies?
CMS Open Payments shows $66,931 in general payments to Dr. Maleszewski from 3 companies from 2021 to 2025. The largest total came from Medical Device Business Services, Inc.
How long has Dr. Joseph John Maleszewski been practicing?
Dr. Maleszewski graduated from medical school in 2005, 21 years ago.
Selling to anatomic pathology and clinical pathology practices?
See pathologists in Minnesota 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