Dr. Peter John Oppelt, MD
- Medicare services, 2024
- 48,339
- Medicare patients, 2024
- 629
- Part D claims, 2024
- 2,073
- Publications
- 49
- Clinical trials
- 10
- Practice address
- 1404 Cross St, O'Fallon, IL 62269
- Practice phone
- Call (618) 257-5607
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Memorial Hospital - Shiloh
O'Fallon, Illinois
Find Dr. Oppelt'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. Peter John Oppelt is a medical oncologist in O'Fallon, Illinois
Dr. Oppelt practices at Memorial Hospital - Shiloh in O'Fallon, Illinois.
Dr. Oppelt's NPI, 1639332968, was assigned on July 7, 2008. Dr. Oppelt graduated from University of Missouri, Columbia School of Medicine in 2008. Dr. Oppelt holds Missouri license 2015014057.
- NPI
- 1639332968NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052553112
- NPI enumeration date
- July 7, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (618) 257-5607
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter John Oppelt practices at Memorial Hospital - Shiloh in O'Fallon, Illinois
Dr. Oppelt's primary practice is Memorial Hospital - Shiloh, at 1404 Cross St, O'Fallon, IL 62269 in Saint Clair County. The practice phone is (618) 257-5607.
- Memorial Hospital - Shiloh1404 Cross St, O'Fallon, IL 62269 · Saint Clair CountyPhone(618) 257-5607
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Peter John Oppelt is affiliated with 9 sites of care and 2 medical groups
Dr. Oppelt's primary practice is Memorial Hospital - Shiloh in O'Fallon, Illinois. Dr. Oppelt is also affiliated with Barnes-Jewish Hospital. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Oppelt to 4 more hospitals, 2 group practices and clinics, 1 hospice and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Peter John Oppelt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oppelt practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Hospital - Shiloh | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Peter John Oppelt is one of 153 medical oncologists in Illinois
Medical oncology is Dr. Oppelt's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Oppelt is licensed in Missouri.
Specialties and state licenses
- Medical oncology, MissouriPrimary
Medical oncologists near Dr. Oppelt
Counts of medical 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. Peter John Oppelt billed Medicare for 48,339 services in 2024
CMS data shows 48,339 Medicare services from Dr. Oppelt across 48 procedure codes in 2024, for 629 Medicare patients. Medicare paid $1,154,417 for them.
Dr. Oppelt's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 157,4842024: 44,52872%
- Tests and treatments
- 2023: 3,3782024: 1,50655%
- Other services
- 2023: 12,5252024: 1,48388%
- Office and hospital visits
- 2023: 8512024: 71316%
- Surgery
- 2023: 2432024: 10955%
Where Dr. Oppelt's Medicare services took place, 2024
- In an office48,311100%
- In a facility280%
Dr. Oppelt compared with the Illinois median for medical oncologists, 2024
- Dr. Oppelt
- Illinois median
- Medicare services
- 48,339vs 67172.0 times
- Medicare patients
- 629vs 2302.7 times
- Part D claims
- 1,783vs 3455.2 times
Medians across 140 medical oncologists in Illinois with Dmand AI profiles that report each measure.
Dr. Oppelt'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. Oppelt?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oppelt and other medical oncologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter John Oppelt treated 629 Medicare patients in 2024, average age 73
CMS counts 629 Medicare patients who saw Dr. Oppelt in 2024. The largest group is 65 to 74, with 301 patients. 74% of them have high blood pressure, and 70% have high cholesterol. 10% are also on Medicaid. Their average risk score is 2.73, 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. Oppelt's median patient age at 73, with 27% women.
Dr. Oppelt's Medicare patients by age, 2024
Dr. Oppelt's Medicare patients by sex, 2024
- Women26442%
- Men36558%
Chronic conditions among Dr. Oppelt's Medicare patients, 2024
- High blood pressure74%
- High cholesterol70%
- Cancer45%
- Arthritis43%
- Ischemic heart disease35%
- Anxiety31%
- Chronic kidney disease30%
- Diabetes29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oppelt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women27%
- Men73%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter John Oppelt wrote 2,073 Medicare Part D claims in 2024
In 2024, Dr. Oppelt wrote 2,073 Medicare Part D claims for 289 patients. 83% of them were for generic drugs. CMS names the drug for 1,783 of them, across 35 drugs with 11 or more claims each, at $1,806,944 in total drug cost. In 2023, CMS named 1,603 claims across 37 drugs.
Dr. Oppelt's Part D claims by kind of drug, 2024
- Generic1,717 claims83%
- Brand-name356 claims17%
Dr. Oppelt'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. Oppelt's Part D claims, 2024
- Opioids18%371 of 2,073 claims
- Antibiotics4%93 of 2,073 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: 1,6032024: 1,78311%
Drugs named by CMS: 35 in 2024, 37 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
Dr. Peter John Oppelt scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Oppelt for performance year 2024, reported as part of a group. Dr. Oppelt accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oppelt as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Oppelt's MIPS scores, performance year 2024
- 88of 100Final score
- 76.1of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 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
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Dr. Peter John Oppelt has 49 publications on record
Dmand AI links 49 papers to Dr. Oppelt, published from 2017 to 2025. 2019 was the busiest year, with 8. The most frequent topics are Head and Neck Neoplasms, Squamous Cell Carcinoma of Head and Neck and Antineoplastic Combined Chemotherapy Protocols. Dr. Oppelt has published most often in Clin Cancer Res. Dr. Oppelt's most frequent co-authors are Wade Larry Thorstad, MD, Hiram Alberto Gay, MD and Ryan Scott Jackson, MD.
Dr. Oppelt's papers by year, 2017 to 2025
Topics Dr. Oppelt writes about most
- Head and Neck Neoplasms
- Squamous Cell Carcinoma of Head and Neck
- Antineoplastic Combined Chemotherapy Protocols
- Papillomavirus Infections
- Antineoplastic Agents
- Carcinoma, Squamous Cell
- Chemoradiotherapy
- Cisplatin
Dr. Oppelt's most frequent co-authors
- Wade Larry Thorstad, MD24 shared papers
- Hiram Alberto Gay, MD19 shared papers
- Ryan Scott Jackson, MD19 shared papers
Recent publications by Dr. Oppelt
Otolaryngol Head Neck Surg
See who Dr. Oppelt researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oppelt works with, so you can find a warm path to the right medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Peter John Oppelt has worked on 10 clinical trials
Dmand AI links Dr. Oppelt to 10 clinical trials, 8 of them phase 2 studies. 6 are still active or recruiting. Conditions studied include Squamous Cell Carcinoma of Head and Neck, Carcinoma, Squamous Cell and Carcinoma, Bronchogenic. Washington University School of Medicine sponsors the most, 10.
Clinical trials with Dr. Oppelt by phase
- NonePhase 1: no trials
- 2Phase 1/2: 2 trials
- 8Phase 2: 8 trials
- NonePhase 3: no trials
- NonePhase 4: no trials
Conditions in Dr. Oppelt's trials
- Squamous Cell Carcinoma of Head and Neck
- Carcinoma, Squamous Cell
- Carcinoma, Bronchogenic
- Carcinoma, Non-Small-Cell Lung
- Carcinoma, Renal Cell
Investigators on the most trials with Dr. Oppelt
- Timothy P. Rearden, MD5 shared trials
- Kevin Terrence Palka, MD4 shared trials
- Caron Elizabeth Rigden, MD3 shared trials
Recent clinical trials with Dr. Oppelt
A Pilot Study to Evaluate the Safety and Efficacy of Zimberelimab (AB122) in Combination With Domvanalimab (AB154) and Etrumadenant (AB928) in Patients With Previously Treated Non-Small Cell Lung Cancer (opens in a new tab)
A Phase II Study of Maintenance Vorolanib and Atezolizumab in Patients With Extensive-stage SCLC (opens in a new tab)
A Randomized Phase II Trial of Cabozantinib Combined With PD-1 and CTLA-4 Inhibition in Metastatic Soft Tissue Sarcoma (opens in a new tab)
Phase I/II Study of Epacadostat (INCB024360) Added to Preoperative Chemoradiation in Patients With Locally Advanced Rectal Cancer (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Peter John Oppelt received $61,491 in industry payments from 2016 to 2025
CMS Open Payments shows 89 general payments to Dr. Oppelt from 13 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 75% of the total. Bristol-Myers Squibb Company paid the most, $35,668. It also lists 3 research payments totaling $4,080 in 2020.
General payments to Dr. Oppelt by program year, 2016 to 2025
General payments to Dr. Oppelt by kind, 2016 to 2025
- Speaker and faculty fees$45,88475%
- Consulting fees$7,12012%
- Travel and lodging$5,8339%
- Food and beverage$2,1724%
- Other$4831%
Companies that paid Dr. Oppelt the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Peter John Oppelt graduated from University of Missouri, Columbia School of Medicine
Dr. Oppelt graduated from University of Missouri, Columbia School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter John Oppelt'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Clinician Public Reporting: Overall MIPS Performance (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. Peter John Oppelt
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. Peter John Oppelt's NPI number?
Dr. Peter John Oppelt's NPI number is 1639332968. It was assigned on July 7, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter John Oppelt?
Dr. Peter John Oppelt is a medical oncologist in O'Fallon, Illinois. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Peter John Oppelt practice?
Dr. Oppelt practices at 1404 Cross St, O'Fallon, IL 62269. Dr. Oppelt's primary practice is Memorial Hospital - Shiloh in O'Fallon, Illinois. Dmand AI also links Dr. Oppelt to 4 hospitals, 2 group practices and clinics, 1 hospice and 1 medical group.
What is Dr. Peter John Oppelt's office phone number?
The practice phone on file for Dr. Oppelt is (618) 257-5607.
What is Dr. Peter John Oppelt's medical license number?
Dr. Oppelt holds Missouri license 2015014057.
Which hospitals is Dr. Peter John Oppelt affiliated with?
Dr. Oppelt is affiliated with Barnes-Jewish Hospital. Dmand AI links Dr. Oppelt to 4 more hospitals.
What medical group is Dr. Peter John Oppelt part of?
Dr. Oppelt is linked to WashU Medicine Psychiatry. Dmand AI links Dr. Oppelt to 1 more medical group.
Does Dr. Peter John Oppelt accept Medicare?
Yes. CMS data shows Dr. Oppelt billed Medicare for 48,339 services in 2024, and Dr. Oppelt accepts Medicare assignment.
Does Dr. Peter John Oppelt offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oppelt as offering telehealth services.
What is Dr. Peter John Oppelt's MIPS score?
Dr. Oppelt's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Peter John Oppelt see?
CMS counts 629 Medicare patients who saw Dr. Oppelt in 2024, with an average age of 73.
What services does Dr. Peter John Oppelt bill to Medicare?
In 2024, Dr. Oppelt's most billed Medicare services were injected or infused drug (J9299), injected or infused drug (J9271) and injected or infused drug (J1453).
Where did Dr. Peter John Oppelt go to medical school?
Dr. Oppelt graduated from University of Missouri, Columbia School of Medicine in 2008.
What drugs does Dr. Peter John Oppelt prescribe most?
In 2024 Medicare Part D data, Dr. Oppelt's most prescribed drugs by claims were Prednisone, Oxycodone HCl and Levothyroxine Sodium.
Has Dr. Peter John Oppelt received payments from drug or device companies?
CMS Open Payments shows $61,491 in general payments to Dr. Oppelt from 13 companies from 2016 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Peter John Oppelt been practicing?
Dr. Oppelt graduated from medical school in 2008, 18 years ago.
Does Dr. Peter John Oppelt do research?
Dmand AI links 49 publications to Dr. Oppelt, published from 2017 to 2025. Dr. Oppelt has worked on 10 clinical trials.
Who does Dr. Peter John Oppelt publish with?
Dr. Oppelt's most frequent co-authors are Wade Larry Thorstad, MD (24 shared papers), Hiram Alberto Gay, MD (19 shared papers) and Ryan Scott Jackson, MD (19 shared papers).
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