Dr. Kevin J. Peifer, MD
- Medicare services, 2024
- 729
- Medicare patients, 2024
- 370
- Part D claims, 2024
- 737
- MIPS score, 2024
- 74
- Hospital affiliations
- 5
- Practice address
- 401 Roxbury Rd, Rockford, IL 61107
- Practice phone
- Call (815) 397-7340
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rockford Gastroenterology Associates
Surgery Center - Medicare-Certified · Rockford, Illinois
Find Dr. Peifer's professional email, personal email and mobile number
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Dr. Kevin J. Peifer is a gastroenterologist in Rockford, Illinois
Dr. Peifer practices at Rockford Gastroenterology Associates in Rockford, Illinois.
Dr. Peifer's NPI, 1699751446, was assigned on December 22, 2005. Dr. Peifer graduated from Medical College of Ohio in 1999. Dr. Peifer holds Illinois license 36114937.
- NPI
- 1699751446NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315983905
- NPI enumeration date
- December 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 397-7340
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kevin J. Peifer practices at Rockford Gastroenterology Associates in Rockford, Illinois
Dr. Peifer's primary practice is Rockford Gastroenterology Associates, at 401 Roxbury Rd, Rockford, IL 61107. The practice phone is (815) 397-7340.
- Rockford Gastroenterology Associates401 Roxbury Rd, Rockford, IL 61107Phone(815) 397-7340
Source: Dmand AI Affiliation Data
Dr. Kevin J. Peifer is affiliated with 7 sites of care and 2 medical groups
Dr. Peifer's primary practice is Rockford Gastroenterology Associates in Rockford, Illinois. Dr. Peifer is also affiliated with UW Health SwedishAmerican Hospital. The medical group on file is Rockford Gastroenterology Associates. Dmand AI also links Dr. Peifer to 4 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account. Dr. Peifer's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kevin J. Peifer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peifer practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rockford Gastroenterology Associates | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kevin J. Peifer is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Peifer's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Peifer is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Peifer
Counts of gastroenterologists 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. Kevin J. Peifer billed Medicare for 729 services in 2024
CMS data shows 729 Medicare services from Dr. Peifer across 15 procedure codes in 2024, for 370 Medicare patients. Medicare paid $53,029 for them.
Dr. Peifer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2672024: 2458%
- Office and hospital visits
- 2023: 2722024: 20525%
- Lab and pathology
- 2023: 1922024: 15121%
- Other services
- 2023: 1492024: 10927%
- Imaging
- 2023: 112024: 1973%
Where Dr. Peifer's Medicare services took place, 2024
- In an office24634%
- In a facility48366%
Dr. Peifer compared with the Illinois median for gastroenterologists, 2024
- Dr. Peifer
- Illinois median
- Medicare services
- 729vs 49846% above
- Medicare patients
- 370vs 30721% above
- Part D claims
- 665vs 37080% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Peifer'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. Kevin J. Peifer treated 370 Medicare patients in 2024, average age 73
CMS counts 370 Medicare patients who saw Dr. Peifer in 2024. The largest group is 65 to 74, with 180 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 20% are also on Medicaid. Their average risk score is 1.78, 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. Peifer's median patient age at 64, with 54% women.
Dr. Peifer's Medicare patients by age, 2024
Dr. Peifer's Medicare patients by sex, 2024
- Women20355%
- Men16745%
Chronic conditions among Dr. Peifer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Chronic kidney disease41%
- Diabetes36%
- Mood disorders35%
- Ischemic heart disease34%
- Anxiety31%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 64
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kevin J. Peifer wrote 737 Medicare Part D claims in 2024
In 2024, Dr. Peifer wrote 737 Medicare Part D claims for 195 patients. 87% of them were for generic drugs. CMS names the drug for 665 of them, across 20 drugs with 11 or more claims each, at $339,373 in total drug cost. In 2023, CMS named 720 claims across 18 drugs.
Dr. Peifer's Part D claims by kind of drug, 2024
- Generic639 claims87%
- Brand-name98 claims13%
Dr. Peifer'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. Peifer's Part D claims, 2024
- Antibiotics6%43 of 737 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: 7202024: 6658%
Drugs named by CMS: 20 in 2024, 18 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. Kevin J. Peifer scored 74 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 74 out of 100 for Dr. Peifer for performance year 2024, reported as part of a group. Dr. Peifer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 232 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Peifer, more than 92% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Peifer's MIPS scores, performance year 2024
- 74of 100Final score
- 66.8of 100Quality
- 63of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Peifer ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 92nd percentile232 procedures
- Colonoscopy
- 71st percentile71 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
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. Kevin J. Peifer received $512 in industry payments from 2016 to 2025
CMS Open Payments shows 13 general payments to Dr. Peifer from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 74% of the total. Abbvie Inc. paid the most, $187.
General payments to Dr. Peifer by program year, 2016 to 2025
General payments to Dr. Peifer by kind, 2016 to 2025
- Food and beverage$37974%
- Gifts$7915%
- Device or supply loans$5411%
Companies that paid Dr. Peifer 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. Kevin J. Peifer graduated from Medical College of Ohio
Dr. Peifer graduated from Medical College of Ohio in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kevin J. 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 | 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 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. Kevin J. 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 Dr. Kevin J. Peifer's NPI number?
Dr. Kevin J. Peifer's NPI number is 1699751446. It was assigned on December 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Kevin J. Peifer?
Dr. Kevin J. Peifer is a gastroenterologist in Rockford, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Kevin J. Peifer practice?
Dr. Peifer practices at 401 Roxbury Rd, Rockford, IL 61107. Dr. Peifer's primary practice is Rockford Gastroenterology Associates in Rockford, Illinois. Dmand AI also links Dr. Peifer to 4 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Kevin J. Peifer's office phone number?
The practice phone on file for Dr. Peifer is (815) 397-7340.
What is Dr. Kevin J. Peifer's medical license number?
Dr. Peifer holds Illinois license 36114937.
Which hospitals is Dr. Kevin J. Peifer affiliated with?
Dr. Peifer is affiliated with UW Health SwedishAmerican Hospital. Dmand AI links Dr. Peifer to 4 more hospitals.
What medical group is Dr. Kevin J. Peifer part of?
Dr. Peifer is linked to Rockford Gastroenterology Associates. Dmand AI links Dr. Peifer to 1 more medical group.
Does Dr. Kevin J. Peifer accept Medicare?
Yes. CMS data shows Dr. Peifer billed Medicare for 729 services in 2024, and Dr. Peifer accepts Medicare assignment.
What is Dr. Kevin J. Peifer's MIPS score?
Dr. Peifer's MIPS final score for performance year 2024 is 74 out of 100, reported as part of a group.
How many Medicare patients does Dr. Kevin J. Peifer see?
CMS counts 370 Medicare patients who saw Dr. Peifer in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. Kevin J. Peifer bill to Medicare?
In 2024, Dr. Peifer's most billed Medicare services were lab and pathology test (88305), medicare service (G0500) and surgery: digestive system (43239).
Where did Dr. Kevin J. Peifer go to medical school?
Dr. Peifer graduated from Medical College of Ohio in 1999.
What drugs does Dr. Kevin J. Peifer prescribe most?
In 2024 Medicare Part D data, Dr. Peifer's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Famotidine.
Has Dr. Kevin J. Peifer received payments from drug or device companies?
CMS Open Payments shows $512 in general payments to Dr. Peifer from 6 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Kevin J. Peifer been practicing?
Dr. Peifer graduated from medical school in 1999, 27 years ago.
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