Dr. Joseph I. Clark, MD
- Medicare services, 2024
- 1,301
- Medicare patients, 2024
- 340
- Part D claims, 2024
- 1,114
- Publications
- 37
- Clinical trials
- 10
- Practice address
- 2160 S 1st Avenue, Maywood, IL 60153
- Practice phone
- Call (708) 216-3299
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Loyola Medicine Pediatric Mobile Health Unit
Mobile Lab · Maywood, Illinois
Find Dr. Clark'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 I. Clark is a hematologist and oncologist in Maywood, Illinois
Dr. Clark practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois.
Dr. Clark's NPI, 1972580843, was assigned on December 30, 2005. Dr. Clark graduated from Loyola University of Chicago, Stritch School of Medicine in 1989. Dr. Clark holds Illinois license 36083048.
- NPI
- 1972580843NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264462340
- NPI enumeration date
- December 30, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 216-3299
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph I. Clark practices at Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois
Dr. Clark's primary practice is Loyola Medicine Pediatric Mobile Health Unit, at 2160 S 1st Avenue, Maywood, IL 60153. The practice phone is (708) 216-3299.
- Loyola Medicine Pediatric Mobile Health Unit2160 S 1st Avenue, Maywood, IL 60153Phone(708) 216-3299
Source: Dmand AI Affiliation Data
Dr. Joseph I. Clark is affiliated with 6 sites of care and 1 medical group
Dr. Clark's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dr. Clark is also affiliated with Loyola University Medical Center. The medical group on file is Loyola University Medical Center. Dmand AI also links Dr. Clark to 3 more hospitals and 1 home health agency, each named with a free account. Dr. Clark's employer is on file too: a clinical lab.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph I. Clark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Clark practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Loyola Medicine Pediatric Mobile Health Unit | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph I. Clark is one of 563 hematologists and oncologists in Illinois
Hematology and oncology is Dr. Clark's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Clark is licensed in Illinois.
Specialties and state licenses
- Hematology and oncology, IllinoisPrimary
Hematologists and oncologists near Dr. Clark
Counts of hematologists and oncologists 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 I. Clark billed Medicare for 1,301 services in 2024
CMS data shows 1,301 Medicare services from Dr. Clark across 11 procedure codes in 2024, for 340 Medicare patients. Medicare paid $72,722 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Clark's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0212024: 9972%
- Other services
- 2023: 02024: 304
Dr. Clark compared with the Illinois median for hematologists and oncologists, 2024
- Dr. Clark
- Illinois median
- Medicare services
- 1,301vs 1,05623% above
- Medicare patients
- 340vs 28221% above
- Part D claims
- 971vs 3283.0 times
Medians across 547 hematologists and oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Clark'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. Clark?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Clark and other hematologists and oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph I. Clark treated 340 Medicare patients in 2024, average age 74
CMS counts 340 Medicare patients who saw Dr. Clark in 2024. The largest group is 65 to 74, with 162 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 2.22, 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. Clark's median patient age at 72, with 35% women.
Dr. Clark's Medicare patients by age, 2024
Dr. Clark's Medicare patients by sex, 2024
- Women11634%
- Men22466%
Chronic conditions among Dr. Clark's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer45%
- Arthritis44%
- Ischemic heart disease36%
- Chronic kidney disease32%
- Diabetes32%
- Atrial fibrillation28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Clark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women35%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph I. Clark wrote 1,114 Medicare Part D claims in 2024
In 2024, Dr. Clark wrote 1,114 Medicare Part D claims for 169 patients. 64% of them were for generic drugs. CMS names the drug for 971 of them, across 22 drugs with 11 or more claims each, at $4,853,576 in total drug cost. In 2023, CMS named 741 claims across 20 drugs.
Dr. Clark's Part D claims by kind of drug, 2024
- Generic711 claims64%
- Brand-name403 claims36%
Dr. Clark'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.
Drug classes CMS tracks in Dr. Clark's Part D claims, 2024
- Opioids5%60 of 1,114 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7412024: 97131%
Drugs named by CMS: 22 in 2024, 20 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
How Dr. Joseph I. Clark takes part in Medicare
Dr. Clark 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 I. Clark has 37 publications on record
Dmand AI links 37 papers to Dr. Clark, published from 2003 to 2025. 2015 was the busiest year, with 4. The most frequent topics are Melanoma, Head and Neck Neoplasms and Neoplasm Metastasis. Dr. Clark has published most often in Cancer. Dr. Clark's most frequent co-authors are Brendan David Curti, MD, David Francis McDermott, MD and Howard L. Kaufman, MD.
Dr. Clark's papers by year, 2014 to 2025
Topics Dr. Clark writes about most
- Melanoma
- Head and Neck Neoplasms
- Neoplasm Metastasis
- Skin Neoplasms
- Antineoplastic Combined Chemotherapy Protocols
- Carcinoma, Squamous Cell
- Antibodies, Monoclonal, Humanized
- Carcinoma, Renal Cell
Dr. Clark's most frequent co-authors
- Brendan David Curti, MD10 shared papers
- David Francis McDermott, MD9 shared papers
- Howard L. Kaufman, MD8 shared papers
Recent publications by Dr. Clark
Support Care Cancer
See who Dr. Clark researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Clark works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Joseph I. Clark has worked on 10 clinical trials
Dmand AI links Dr. Clark to 10 clinical trials, 5 of them phase 2 studies. 9 are still active or recruiting. Conditions studied include Melanoma, Nevi and Melanomas and Carcinoma, Renal Cell. National Cancer Institute (NCI) sponsors the most, 8.
Clinical trials with Dr. Clark by phase
- NonePhase 1: no trials
- 5Phase 2: 5 trials
- 5Phase 3: 5 trials
- NonePhase 4: no trials
Conditions in Dr. Clark's trials
- Melanoma
- Nevi and Melanomas
- Carcinoma, Renal Cell
- Kidney Neoplasms
- Breast Neoplasms
Investigators on the most trials with Dr. Clark
- Ralph J. Hauke, MD5 shared trials
- Kari L. Kendra, MD5 shared trials
- Theodore F. Logan, MD5 shared trials
Recent clinical trials with Dr. Clark
Immunotherapy With Nivolumab and Ipilimumab Followed by Nivolumab or Nivolumab With Cabozantinib for Patients With Advanced Kidney Cancer, The PDIGREE Study (opens in a new tab)
A Study to Compare the Administration of Pembrolizumab After Surgery Versus Administration Both Before and After Surgery for High-Risk Melanoma (opens in a new tab)
Talimogene Laherparepvec and Pembrolizumab in Treating Patients With Stage III-IV Melanoma (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Joseph I. Clark received $123,888 in industry payments from 2016 to 2022
CMS Open Payments shows 96 general payments to Dr. Clark from 7 drug and device companies from 2016 to 2022. Speaker and faculty fees make up the largest share, 77% of the total. Bristol-Myers Squibb Company paid the most, $70,655.
General payments to Dr. Clark by program year, 2016 to 2022
General payments to Dr. Clark by kind, 2016 to 2022
- Speaker and faculty fees$95,99077%
- Consulting fees$14,72512%
- Education$7,6726%
- Food and beverage$3,4013%
- Travel and lodging$2,1002%
Companies that paid Dr. Clark the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph I. Clark graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Clark graduated from Loyola University of Chicago, Stritch School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joseph I. Clark'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) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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 I. Clark
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 I. Clark's NPI number?
Dr. Joseph I. Clark's NPI number is 1972580843. It was assigned on December 30, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph I. Clark?
Dr. Joseph I. Clark is a hematologist and oncologist in Maywood, Illinois. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Joseph I. Clark practice?
Dr. Clark practices at 2160 S 1st Avenue, Maywood, IL 60153. Dr. Clark's primary practice is Loyola Medicine Pediatric Mobile Health Unit in Maywood, Illinois. Dmand AI also links Dr. Clark to 3 hospitals and 1 home health agency.
What is Dr. Joseph I. Clark's office phone number?
The practice phone on file for Dr. Clark is (708) 216-3299.
What is Dr. Joseph I. Clark's medical license number?
Dr. Clark holds Illinois license 36083048.
Which hospitals is Dr. Joseph I. Clark affiliated with?
Dr. Clark is affiliated with Loyola University Medical Center. Dmand AI links Dr. Clark to 3 more hospitals.
What medical group is Dr. Joseph I. Clark part of?
Dr. Clark is linked to Loyola University Medical Center.
Does Dr. Joseph I. Clark accept Medicare?
Yes. CMS data shows Dr. Clark billed Medicare for 1,301 services in 2024, and Dr. Clark accepts Medicare assignment.
How many Medicare patients does Dr. Joseph I. Clark see?
CMS counts 340 Medicare patients who saw Dr. Clark in 2024, with an average age of 74.
What services does Dr. Joseph I. Clark bill to Medicare?
In 2024, Dr. Clark's most billed Medicare services were office visit, established patient (99213), medicare service (G2211) and office visit, established patient (99214).
Show 6 more questionsShow fewer questions
Where did Dr. Joseph I. Clark go to medical school?
Dr. Clark graduated from Loyola University of Chicago, Stritch School of Medicine in 1989.
What drugs does Dr. Joseph I. Clark prescribe most?
In 2024 Medicare Part D data, Dr. Clark's most prescribed drugs by claims were Levothyroxine Sodium, Cabometyx and Prochlorperazine Maleate.
Has Dr. Joseph I. Clark received payments from drug or device companies?
CMS Open Payments shows $123,888 in general payments to Dr. Clark from 7 companies from 2016 to 2022. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Joseph I. Clark been practicing?
Dr. Clark graduated from medical school in 1989, 37 years ago.
Does Dr. Joseph I. Clark do research?
Dmand AI links 37 publications to Dr. Clark, published from 2003 to 2025. Dr. Clark has worked on 10 clinical trials.
Who does Dr. Joseph I. Clark publish with?
Dr. Clark's most frequent co-authors are Brendan David Curti, MD (10 shared papers), David Francis McDermott, MD (9 shared papers) and Howard L. Kaufman, MD (8 shared papers).
Selling to hematology and oncology practices?
See hematologists and oncologists in Illinois 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