Dr. Mark B. Deyoung, MD
- Medicare services, 2024
- 406
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 9,004
- MIPS score, 2024
- 83
- Hospital affiliations
- 4
- Practice address
- 799 N Henderson St, Galesburg, IL 61401
- Practice phone
- Call (309) 286-2631
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Arcadia Care Toulon
Galesburg, Illinois
Find Dr. Deyoung'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. Mark B. Deyoung is a family medicine physician in Galesburg, Illinois
Dr. Deyoung practices at Arcadia Care Toulon in Galesburg, Illinois.
Dr. Deyoung's NPI, 1306845045, was assigned on July 15, 2005. Dr. Deyoung graduated from University of Michigan Medical School in 1978. Dr. Deyoung holds Illinois license 036108454.
- NPI
- 1306845045NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850369554
- NPI enumeration date
- July 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (309) 286-2631
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark B. Deyoung practices at Arcadia Care Toulon in Galesburg, Illinois
Dr. Deyoung's primary practice is Arcadia Care Toulon, at 799 N Henderson St, Galesburg, IL 61401 in Knox County. The practice phone is (309) 286-2631.
- Arcadia Care Toulon799 N Henderson St, Galesburg, IL 61401 · Knox CountyPhone(309) 286-2631
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark B. Deyoung is affiliated with 9 sites of care and 1 medical group
Dr. Deyoung's primary practice is Arcadia Care Toulon in Galesburg, Illinois. Dr. Deyoung is also affiliated with OSF St. Mary Medical Center. The medical group on file is Graham Medical Group. Dmand AI also links Dr. Deyoung to 3 more hospitals, 2 home health agencies, 1 hospice and 1 rural health clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark B. Deyoung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Deyoung practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arcadia Care Toulon | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark B. Deyoung is one of 5,105 family medicine physicians in Illinois
Family medicine is Dr. Deyoung's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Deyoung is licensed in Illinois.
Specialties and state licenses
- Family medicine, IllinoisPrimary
Family medicine physicians near Dr. Deyoung
Counts of family medicine physicians 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. Mark B. Deyoung billed Medicare for 406 services in 2024
CMS data shows 406 Medicare services from Dr. Deyoung across 4 procedure codes in 2024, for 220 Medicare patients. Medicare paid $27,908 for them. Every service was in an office.
Dr. Deyoung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 902024: 385328%
- Other services
- 2023: 02024: 21
Dr. Deyoung compared with the Illinois median for family medicine physicians, 2024
- Dr. Deyoung
- Illinois median
- Medicare services
- 406vs 35614% above
- Medicare patients
- 220vs 16038% above
- Part D claims
- 8,373vs 61813.5 times
Medians across 5,015 family medicine physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Deyoung'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark B. Deyoung treated 220 Medicare patients in 2024, average age 74
CMS counts 220 Medicare patients who saw Dr. Deyoung in 2024. The largest group is 65 to 74, with 116 patients. 75% of them have high blood pressure, and 69% have high cholesterol. 8% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Deyoung's median patient age at 76, with 54% women.
Dr. Deyoung's Medicare patients by age, 2024
Dr. Deyoung's Medicare patients by sex, 2024
- Women10548%
- Men11552%
Chronic conditions among Dr. Deyoung's Medicare patients, 2024
- High blood pressure75%
- High cholesterol69%
- Arthritis39%
- Diabetes27%
- Anxiety20%
- Atrial fibrillation17%
- Chronic kidney disease17%
- Ischemic heart disease16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Deyoung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark B. Deyoung wrote 9,004 Medicare Part D claims in 2024
In 2024, Dr. Deyoung wrote 9,004 Medicare Part D claims for 535 patients. 90% of them were for generic drugs. CMS names the drug for 8,373 of them, across 136 drugs with 11 or more claims each, at $469,305 in total drug cost. In 2023, CMS named 7,196 claims across 128 drugs.
Dr. Deyoung's Part D claims by kind of drug, 2024
- Generic8,078 claims90%
- Brand-name884 claims10%
- Other42 claims0%
Dr. Deyoung'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. Deyoung's Part D claims, 2024
- Opioids7%637 of 9,004 claims
- Antibiotics2%157 of 9,004 claims
- Antipsychotics, patients 65 and over0%28 of 9,004 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: 7,1962024: 8,37316%
Drugs named by CMS: 136 in 2024, 128 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. Mark B. Deyoung scored 83 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Deyoung for performance year 2024, reported as part of a group. Dr. Deyoung accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Deyoung's MIPS scores, performance year 2024
- 83of 100Final score
- 62.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark B. Deyoung received $585 in industry payments from 2019 to 2025
CMS Open Payments shows 37 general payments to Dr. Deyoung from 12 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $160.
General payments to Dr. Deyoung by program year, 2019 to 2025
Companies that paid Dr. Deyoung the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark B. Deyoung graduated from University of Michigan Medical School
Dr. Deyoung graduated from University of Michigan Medical School in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark B. Deyoung'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 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. Mark B. Deyoung
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. Mark B. Deyoung's NPI number?
Dr. Mark B. Deyoung's NPI number is 1306845045. It was assigned on July 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark B. Deyoung?
Dr. Mark B. Deyoung is a family medicine physician in Galesburg, Illinois. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark B. Deyoung practice?
Dr. Deyoung practices at 799 N Henderson St, Galesburg, IL 61401. Dr. Deyoung's primary practice is Arcadia Care Toulon in Galesburg, Illinois. Dmand AI also links Dr. Deyoung to 3 hospitals, 2 home health agencies, 1 hospice and 1 rural health clinic.
What is Dr. Mark B. Deyoung's office phone number?
The practice phone on file for Dr. Deyoung is (309) 286-2631.
What is Dr. Mark B. Deyoung's medical license number?
Dr. Deyoung holds Illinois license 036108454.
Which hospitals is Dr. Mark B. Deyoung affiliated with?
Dr. Deyoung is affiliated with OSF St. Mary Medical Center. Dmand AI links Dr. Deyoung to 3 more hospitals.
What medical group is Dr. Mark B. Deyoung part of?
Dr. Deyoung is linked to Graham Medical Group.
Does Dr. Mark B. Deyoung accept Medicare?
Yes. CMS data shows Dr. Deyoung billed Medicare for 406 services in 2024, and Dr. Deyoung accepts Medicare assignment.
What is Dr. Mark B. Deyoung's MIPS score?
Dr. Deyoung's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.
How many Medicare patients does Dr. Mark B. Deyoung see?
CMS counts 220 Medicare patients who saw Dr. Deyoung in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Mark B. Deyoung bill to Medicare?
In 2024, Dr. Deyoung's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99212).
Where did Dr. Mark B. Deyoung go to medical school?
Dr. Deyoung graduated from University of Michigan Medical School in 1978.
What drugs does Dr. Mark B. Deyoung prescribe most?
In 2024 Medicare Part D data, Dr. Deyoung's most prescribed drugs by claims were Lisinopril, Hydrocodone-Acetaminophen and Levothyroxine Sodium.
Has Dr. Mark B. Deyoung received payments from drug or device companies?
CMS Open Payments shows $585 in general payments to Dr. Deyoung from 12 companies from 2019 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Mark B. Deyoung been practicing?
Dr. Deyoung graduated from medical school in 1978, 48 years ago.
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