Stephanie E. Peifer, PA-C
- Medicare patients, 2024
- 393
- Part D claims, 2024
- 203
- MIPS score, 2024
- 81
- Hospital affiliations
- 1
- Industry payments
- $45
- Practice address
- 900 Rand Rd, Des Plaines, IL 60016
- Practice phone
- Call (847) 324-3090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ibji Oak, LLC
Des Plaines, Illinois
Find Stephanie Peifer'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.
Stephanie E. Peifer is a physician assistant in Des Plaines, Illinois
Stephanie Peifer practices at Ibji Oak, LLC in Des Plaines, Illinois.
Stephanie Peifer's NPI, 1720647571, was assigned on June 6, 2019. Stephanie Peifer graduated from Wayne State University School of Medicine in 2019. Stephanie Peifer holds Illinois license 085007131.
- NPI
- 1720647571NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8426385402
- NPI enumeration date
- June 6, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 324-3090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Stephanie E. Peifer practices at Ibji Oak, LLC in Des Plaines, Illinois
Stephanie Peifer's primary practice is Ibji Oak, LLC, at 900 Rand Rd, Des Plaines, IL 60016 in Cook County. The practice phone is (847) 324-3090.
- Ibji Oak, LLC900 Rand Rd, Des Plaines, IL 60016 · Cook CountyPhone(847) 324-3090
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Stephanie E. Peifer is affiliated with 3 sites of care and 2 medical groups
Stephanie Peifer's primary practice is Ibji Oak, LLC in Des Plaines, Illinois. Stephanie Peifer is also affiliated with Evanston Hospital. The medical group on file is Endeavor Health Medical Group. Dmand AI also links Stephanie Peifer to 1 more group practice or clinic 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 Stephanie E. Peifer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Stephanie Peifer practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ibji Oak, LLC | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Stephanie E. Peifer is one of 4,299 physician assistants in Illinois
Physician assistant is Stephanie Peifer's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Stephanie Peifer is licensed in Illinois.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
Physician assistants near Stephanie Peifer
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
Stephanie E. Peifer treated 393 Medicare patients in 2024, average age 76
CMS counts 393 Medicare patients who saw Stephanie Peifer in 2024. The largest group is 65 to 74, with 176 patients. 75% of them have arthritis, and 75% have high cholesterol. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Stephanie Peifer's median patient age at 71, with 61% women.
Stephanie Peifer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Stephanie Peifer's Medicare patients by sex, 2024
- Women26668%
- Men12732%
Chronic conditions among Stephanie Peifer's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure67%
- Anxiety22%
- Mood disorders21%
- Osteoporosis20%
- Cancer19%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Stephanie Peifer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Stephanie E. Peifer wrote 203 Medicare Part D claims in 2024
In 2024, Stephanie Peifer wrote 203 Medicare Part D claims for 151 patients. 98% of them were for generic drugs.
Stephanie Peifer's Part D claims by kind of drug, 2024
- Generic199 claims98%
- Brand-name and other4 claims2%
Drug classes CMS tracks in Stephanie Peifer's Part D claims, 2024
- Opioids35%71 of 203 claims
- Antibiotics26%53 of 203 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
Stephanie E. Peifer scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Stephanie Peifer for performance year 2024, reported as part of a group. Stephanie Peifer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Stephanie Peifer's MIPS scores, performance year 2024
- 81of 100Final score
- 76.5of 100Quality
- 83of 100Promoting Interoperability
- 40of 100Improvement Activities
- 75of 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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Stephanie E. Peifer received $45 in industry payments in 2025
CMS Open Payments shows 2 general payments to Stephanie Peifer from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Ferring Pharmaceuticals Inc. paid the most, $45.
Companies that paid Stephanie Peifer the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Stephanie E. Peifer graduated from Wayne State University School of Medicine
Stephanie Peifer graduated from Wayne State University School of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Stephanie E. Peifer'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)Clinician Public Reporting: Overall MIPS Performance (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 Stephanie E. Peifer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Stephanie E. Peifer's NPI number?
Stephanie E. Peifer's NPI number is 1720647571. It was assigned on June 6, 2019, and it is active in the NPI Registry.
What does Stephanie E. Peifer specialize in?
Stephanie E. Peifer is a physician assistant in Des Plaines, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Stephanie E. Peifer practice?
Stephanie Peifer practices at 900 Rand Rd, Des Plaines, IL 60016. Stephanie Peifer's primary practice is Ibji Oak, LLC in Des Plaines, Illinois. Dmand AI also links Stephanie Peifer to 1 group practice or clinic and 1 medical group.
What is Stephanie E. Peifer's office phone number?
The practice phone on file for Stephanie Peifer is (847) 324-3090.
What is Stephanie E. Peifer's medical license number?
Stephanie Peifer holds Illinois license 085007131.
Which hospitals is Stephanie E. Peifer affiliated with?
Stephanie Peifer is affiliated with Evanston Hospital.
What medical group is Stephanie E. Peifer part of?
Stephanie Peifer is linked to Endeavor Health Medical Group. Dmand AI links Stephanie Peifer to 1 more medical group.
Does Stephanie E. Peifer accept Medicare?
Yes. CMS lists Stephanie Peifer as accepting Medicare assignment.
What is Stephanie E. Peifer's MIPS score?
Stephanie Peifer's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Stephanie E. Peifer see?
CMS counts 393 Medicare patients who saw Stephanie Peifer in 2024, with an average age of 76.
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Where did Stephanie E. Peifer go to medical school?
Stephanie Peifer graduated from Wayne State University School of Medicine in 2019.
Has Stephanie E. Peifer received payments from drug or device companies?
CMS Open Payments shows $45 in general payments to Stephanie Peifer from 1 company from 2025 to 2025. The largest total came from Ferring Pharmaceuticals Inc.
How long has Stephanie E. Peifer been practicing?
Stephanie Peifer graduated from medical school in 2019, 7 years ago.
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