Nathaniel Brian Schaefer, PA-C
- Medicare patients, 2024
- 185
- Part D claims, 2024
- 228
- Industry payments
- $2,243
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137
- Practice phone
- Call (630) 469-9200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Duly Health and Care
Glen Ellyn, Illinois
Find Nathaniel Schaefer'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.
Nathaniel Brian Schaefer is a physician assistant in Glen Ellyn, Illinois
Nathaniel Schaefer practices at Duly Health and Care in Glen Ellyn, Illinois.
Nathaniel Schaefer's NPI, 1992080048, was assigned on October 19, 2011. Nathaniel Schaefer graduated from George Washington University School of Medicine in 2011. Nathaniel Schaefer holds Illinois license 085-009217.
- NPI
- 1992080048NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537322680
- NPI enumeration date
- October 19, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 469-9200
- 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; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathaniel Brian Schaefer practices at Duly Health and Care in Glen Ellyn, Illinois
Nathaniel Schaefer's primary practice is Duly Health and Care, at 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137 in Dupage County. The practice phone is (630) 469-9200.
- Duly Health and Care430-54 Pennsylvania Ave, Glen Ellyn, IL 60137 · Dupage CountyPhone(630) 469-9200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nathaniel Brian Schaefer is affiliated with 3 sites of care and 1 medical group
Nathaniel Schaefer's primary practice is Duly Health and Care in Glen Ellyn, Illinois. The medical group on file is DuPage Medical Group. Dmand AI also links Nathaniel Schaefer to 1 more group practice or clinic and 1 therapy and rehab clinic, each named with a free account. Nathaniel Schaefer's employer is on file too: a physical therapy & rehab clinic.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Nathaniel Brian Schaefer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathaniel Schaefer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Duly Health and Care | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Nathaniel Brian Schaefer is one of 4,299 physician assistants in Illinois
Physician assistant is Nathaniel Schaefer's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Dmand AI has Nathaniel Schaefer's licenses on file in 2 states: Illinois and Virginia.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
- Surgical physician assistant, Virginia
Physician assistants near Nathaniel Schaefer
Counts of physician assistants 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
Nathaniel Brian Schaefer treated 185 Medicare patients in 2024, average age 74
CMS counts 185 Medicare patients who saw Nathaniel Schaefer in 2024. The largest group is 65 to 74, with 100 patients. 75% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Nathaniel Schaefer's median patient age at 45, with 39% women.
Nathaniel Schaefer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Nathaniel Schaefer's Medicare patients by sex, 2024
- Women9551%
- Men9049%
Chronic conditions among Nathaniel Schaefer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure65%
- Arthritis40%
- Ischemic heart disease22%
- Anxiety20%
- Mood disorders19%
- Cancer17%
- Depression17%
Share of Medicare patients with each condition. A patient can have several.
Nathaniel Schaefer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women39%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathaniel Brian Schaefer wrote 228 Medicare Part D claims in 2024
In 2024, Nathaniel Schaefer wrote 228 Medicare Part D claims for 128 patients. 97% of them were for generic drugs.
Nathaniel Schaefer's Part D claims by kind of drug, 2024
- Generic222 claims97%
- Brand-name and other6 claims3%
Drug classes CMS tracks in Nathaniel Schaefer's Part D claims, 2024
- Antibiotics10%22 of 228 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Nathaniel Brian Schaefer takes part in Medicare
Nathaniel Schaefer 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.
Nathaniel Brian Schaefer received $2,243 in industry payments in 2025
CMS Open Payments shows 50 general payments to Nathaniel Schaefer from 13 drug and device companies in 2025. Consulting fees make up the largest share, 50% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,409.
General payments to Nathaniel Schaefer by kind, 2025 to 2025
- Consulting fees$1,12550%
- Food and beverage$1,01845%
- Education$1004%
Companies that paid Nathaniel Schaefer the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Nathaniel Brian Schaefer graduated from George Washington University School of Medicine
Nathaniel Schaefer graduated from George Washington University School of Medicine in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Nathaniel Brian Schaefer'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 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 (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 Nathaniel Brian Schaefer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nathaniel Brian Schaefer's NPI number?
Nathaniel Brian Schaefer's NPI number is 1992080048. It was assigned on October 19, 2011, and it is active in the NPI Registry.
What does Nathaniel Brian Schaefer specialize in?
Nathaniel Brian Schaefer is a physician assistant in Glen Ellyn, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Nathaniel Brian Schaefer practice?
Nathaniel Schaefer practices at 430-54 Pennsylvania Ave, Glen Ellyn, IL 60137. Nathaniel Schaefer's primary practice is Duly Health and Care in Glen Ellyn, Illinois. Dmand AI also links Nathaniel Schaefer to 1 group practice or clinic and 1 therapy and rehab clinic.
What is Nathaniel Brian Schaefer's office phone number?
The practice phone on file for Nathaniel Schaefer is (630) 469-9200.
What is Nathaniel Brian Schaefer's medical license number?
Nathaniel Schaefer holds Illinois license 085-009217, one of the licenses on file in 2 states.
Which states has Nathaniel Brian Schaefer been licensed in?
Dmand AI has state licenses on file for Nathaniel Schaefer in Illinois and Virginia.
What medical group is Nathaniel Brian Schaefer part of?
Nathaniel Schaefer is linked to DuPage Medical Group.
Does Nathaniel Brian Schaefer accept Medicare?
Yes. CMS lists Nathaniel Schaefer as accepting Medicare assignment.
How many Medicare patients does Nathaniel Brian Schaefer see?
CMS counts 185 Medicare patients who saw Nathaniel Schaefer in 2024, with an average age of 74.
Where did Nathaniel Brian Schaefer go to medical school?
Nathaniel Schaefer graduated from George Washington University School of Medicine in 2011.
Has Nathaniel Brian Schaefer received payments from drug or device companies?
CMS Open Payments shows $2,243 in general payments to Nathaniel Schaefer from 13 companies from 2025 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Nathaniel Brian Schaefer been practicing?
Nathaniel Schaefer graduated from medical school in 2011, 15 years ago.
Selling to physician assistant practices?
See physician assistants 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