Dr. John Keffer Biemer, MD
- Medicare services, 2024
- 3,096
- Medicare patients, 2024
- 1,005
- MIPS score, 2024
- 75
- Hospital affiliations
- 4
- Industry payments
- $84
- Practice address
- 155 East Brush Hill Road, Elmhurst, IL 60126
- Practice phone
- Call (331) 221-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Biemer's professional email, personal email and mobile number
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Dr. John Keffer Biemer is a pathologist in Elmhurst, Illinois
Dr. Biemer practices at Elmhurst Hospital in Elmhurst, Illinois, part of Endeavor Health.
Dr. Biemer's NPI, 1609119411, was assigned on March 29, 2013. Dr. Biemer graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2013. Dr. Biemer holds Illinois license 125062984.
- NPI
- 1609119411NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597066399
- NPI enumeration date
- March 29, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (331) 221-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Keffer Biemer practices at Elmhurst Hospital in Elmhurst, Illinois
Dr. Biemer's primary practice is Elmhurst Hospital, at 155 East Brush Hill Road, Elmhurst, IL 60126 in Du Page County. The practice phone is (331) 221-1000.
- Elmhurst Hospital155 East Brush Hill Road, Elmhurst, IL 60126 · Du Page CountyPhone(331) 221-1000
Source: Dmand AI Affiliation Data
Dr. John Keffer Biemer is affiliated with 4 sites of care and 1 medical group
Dr. Biemer's primary practice is Elmhurst Hospital in Elmhurst, Illinois, part of Endeavor Health. Dr. Biemer is also affiliated with Loyola University Medical Center. The medical group on file is Associated Pathology Consultants, SC. Dmand AI also links Dr. Biemer to 2 more hospitals, 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. John Keffer Biemer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Biemer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Elmhurst Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Keffer Biemer is one of 487 pathologists in Illinois
Anatomic pathology and clinical pathology is Dr. Biemer's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Biemer is licensed in Illinois.
Specialties and state licenses
- Anatomic pathology and clinical pathology, IllinoisPrimary
Pathologists near Dr. Biemer
Counts of pathologists 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. John Keffer Biemer billed Medicare for 3,096 services in 2024
CMS data shows 3,096 Medicare services from Dr. Biemer across 20 procedure codes in 2024, for 1,005 Medicare patients. Medicare paid $85,370 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Biemer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,9912024: 3,0803%
- Other services
- 2023: 162024: 16No change
Dr. Biemer compared with the Illinois median for pathologists, 2024
- Dr. Biemer
- Illinois median
- Medicare services
- 3,096vs 1,3892.2 times
- Medicare patients
- 1,005vs 57375% above
Medians across 481 pathologists in Illinois with Dmand AI profiles that report each measure.
Dr. Biemer'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Biemer and other pathologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Keffer Biemer treated 1,005 Medicare patients in 2024, average age 74
CMS counts 1,005 Medicare patients who saw Dr. Biemer in 2024. The largest group is 65 to 74, with 503 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Biemer's median patient age at 55, with 60% women.
Dr. Biemer's Medicare patients by age, 2024
Dr. Biemer's Medicare patients by sex, 2024
- Women53453%
- Men47147%
Chronic conditions among Dr. Biemer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Ischemic heart disease35%
- Diabetes34%
- Cancer29%
- Chronic kidney disease29%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Biemer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Keffer Biemer scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Biemer for performance year 2024, reported as part of a group. Dr. Biemer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
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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Dr. John Keffer Biemer received $84 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Biemer from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $84.
Companies that paid Dr. Biemer the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Keffer Biemer graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Biemer graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Keffer Biemer'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) |
| 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 Dr. John Keffer Biemer
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. John Keffer Biemer's NPI number?
Dr. John Keffer Biemer's NPI number is 1609119411. It was assigned on March 29, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. John Keffer Biemer?
Dr. John Keffer Biemer is a pathologist in Elmhurst, Illinois. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. John Keffer Biemer practice?
Dr. Biemer practices at 155 East Brush Hill Road, Elmhurst, IL 60126. Dr. Biemer's primary practice is Elmhurst Hospital in Elmhurst, Illinois, part of Endeavor Health. Dmand AI also links Dr. Biemer to 2 hospitals.
What is Dr. John Keffer Biemer's office phone number?
The practice phone on file for Dr. Biemer is (331) 221-1000.
What is Dr. John Keffer Biemer's medical license number?
Dr. Biemer holds Illinois license 125062984.
Which hospitals is Dr. John Keffer Biemer affiliated with?
Dr. Biemer practices at Elmhurst Hospital in Elmhurst, Illinois. Dr. Biemer is also affiliated with Loyola University Medical Center. Dmand AI links Dr. Biemer to 2 more hospitals.
What medical group is Dr. John Keffer Biemer part of?
Dr. Biemer is linked to Associated Pathology Consultants, SC.
Does Dr. John Keffer Biemer accept Medicare?
Yes. CMS data shows Dr. Biemer billed Medicare for 3,096 services in 2024, and Dr. Biemer accepts Medicare assignment.
What is Dr. John Keffer Biemer's MIPS score?
Dr. Biemer's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
How many Medicare patients does Dr. John Keffer Biemer see?
CMS counts 1,005 Medicare patients who saw Dr. Biemer in 2024, with an average age of 74.
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What services does Dr. John Keffer Biemer bill to Medicare?
In 2024, Dr. Biemer's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88312).
Where did Dr. John Keffer Biemer go to medical school?
Dr. Biemer graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2013.
Has Dr. John Keffer Biemer received payments from drug or device companies?
CMS Open Payments shows $84 in general payments to Dr. Biemer from 1 company from 2019 to 2019. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. John Keffer Biemer been practicing?
Dr. Biemer graduated from medical school in 2013, 13 years ago.
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