Dr. Mark Alan Chapman, MD
- Medicare services, 2018
- 31
- Part D claims, 2024
- 80
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 25 North Winfield Road, Winfield, IL 60190
- Practice phone
- Call (630) 682-1600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Chapman'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 Alan Chapman is a psychiatrist in Winfield, Illinois
Dr. Chapman practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Dr. Chapman's NPI, 1306132949, was assigned on June 22, 2011. Dr. Chapman graduated from West Virginia University School Of Medicine in 2011. Dr. Chapman holds Illinois license 125059656.
- NPI
- 1306132949NPI Registry (opens in a new tab)
- NPI enumeration date
- June 22, 2011
- NPI status
- Active
- Practice phone
- (630) 682-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Mark Alan Chapman practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Dr. Chapman's primary practice is Northwestern Medicine Central DuPage Hospital, at 25 North Winfield Road, Winfield, IL 60190 in Du Page County. The practice phone is (630) 682-1600.
- Northwestern Medicine Central DuPage Hospital25 North Winfield Road, Winfield, IL 60190 · Du Page CountyPhone(630) 682-1600
Source: Dmand AI Affiliation Data
Dr. Mark Alan Chapman is affiliated with 3 sites of care and 1 medical group
Dr. Chapman's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is Heartland Alliance Health. Dmand AI also links Dr. Chapman to 1 more breast imaging center and 1 clinical lab, 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. Mark Alan Chapman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chapman practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine Central DuPage Hospital | Available with a free account |
| +2 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 Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Alan Chapman is one of 1,527 psychiatrists in Illinois
Psychiatry is Dr. Chapman's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Chapman is board certified in forensic psychiatry by the American Board of Psychiatry and Neurology. Dr. Chapman is licensed in Illinois.
Specialties and state licenses
- Psychiatry, IllinoisPrimary
Psychiatrists near Dr. Chapman
Counts of psychiatrists 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 Alan Chapman billed Medicare for 31 services in 2018
CMS data shows 31 Medicare services from Dr. Chapman across 1 procedure code in 2018, all of them office visits. Medicare paid $2,258 for them. Every service was in an office.
Dr. Chapman's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 1112018: 3172%
- Tests and treatments
- 2017: 152018: 0100%
Dr. Chapman compared with the Illinois median for psychiatrists, 2018
- Dr. Chapman
- Illinois median
- Medicare services
- 31vs 20385% below
- Part D claims
- 34vs 17480% below
Medians across 1,588 psychiatrists in Illinois with Dmand AI profiles that report each measure.
Dr. Chapman's most billed Medicare procedure codes, 2018
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. Chapman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chapman and other psychiatrists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Alan Chapman's patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Dr. Chapman's median patient age at 39, with 0% women.
Dr. Chapman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Mark Alan Chapman wrote 80 Medicare Part D claims in 2024
In 2024, Dr. Chapman wrote 80 Medicare Part D claims. 86% of them were for generic drugs. CMS names the drug for 34 of them, across 3 drugs with 11 or more claims each, at $388 in total drug cost. In 2022, CMS named 23 claims across 2 drugs.
Dr. Chapman's Part D claims by kind of drug, 2024
- Generic69 claims86%
- Brand-name11 claims14%
Dr. Chapman's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 232023: 3448%
Drugs named by CMS: 3 in 2023, 2 in 2022.
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
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. Mark Alan Chapman graduated from West Virginia University School Of Medicine
Dr. Chapman graduated from West Virginia University School Of Medicine in 2011. Dr. Chapman is a member of AAPL.
- Medical school
- Board certified in forensic psychiatry
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Mark Alan Chapman accepts plans from 2 insurance carriers
Dr. Chapman is in network with 2 carriers, including United Healthcare and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- CMS Medicare
Plan types Dr. Chapman accepts, by number of carriers
- Medicare2
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Alan Chapman'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 Data |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Alan Chapman
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 Alan Chapman's NPI number?
Dr. Mark Alan Chapman's NPI number is 1306132949. It was assigned on June 22, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Alan Chapman?
Dr. Mark Alan Chapman is a psychiatrist in Winfield, Illinois. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mark Alan Chapman practice?
Dr. Chapman practices at 25 North Winfield Road, Winfield, IL 60190. Dr. Chapman's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Chapman to 1 breast imaging center and 1 clinical lab.
What is Dr. Mark Alan Chapman's office phone number?
The practice phone on file for Dr. Chapman is (630) 682-1600.
What is Dr. Mark Alan Chapman's medical license number?
Dr. Chapman holds Illinois license 125059656.
Which hospitals is Dr. Mark Alan Chapman affiliated with?
Dr. Chapman practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois.
What medical group is Dr. Mark Alan Chapman part of?
Dr. Chapman is linked to Heartland Alliance Health.
Does Dr. Mark Alan Chapman accept Medicare?
Yes. CMS data shows Dr. Chapman billed Medicare for 31 services in 2018.
Is Dr. Mark Alan Chapman board certified?
Yes. Dr. Chapman is board certified in forensic psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Mark Alan Chapman bill to Medicare?
In 2018, Dr. Chapman's most billed Medicare services were office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Mark Alan Chapman go to medical school?
Dr. Chapman graduated from West Virginia University School Of Medicine in 2011.
What drugs does Dr. Mark Alan Chapman prescribe most?
In 2023 Medicare Part D data, Dr. Chapman's most prescribed drugs by claims were Alprazolam, Clonazepam and Lithium Carbonate ER.
How long has Dr. Mark Alan Chapman been practicing?
Dr. Chapman graduated from medical school in 2011, 15 years ago.
What insurance does Dr. Mark Alan Chapman accept?
Dr. Chapman is in network with 2 carriers, including United Healthcare and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to psychiatry practices?
See psychiatrists 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