Dr. David A. Klem, MD
- Medicare services, 2024
- 202
- Medicare patients, 2024
- 168
- Part D claims, 2024
- 68
- MIPS score, 2024
- 96
- Hospital affiliations
- 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. Klem'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. David A. Klem is a general surgeon in Winfield, Illinois
Dr. Klem practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare.
Dr. Klem's NPI, 1487628475, was assigned on February 15, 2006. Dr. Klem graduated from Rush Medical College of Rush University in 1991. Dr. Klem holds Illinois license 036092501.
- NPI
- 1487628475NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597899971
- NPI enumeration date
- February 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (630) 682-1600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David A. Klem practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois
Dr. Klem'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. David A. Klem is affiliated with 6 sites of care and 2 medical groups
Dr. Klem's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dr. Klem is also affiliated with Northwestern Medicine Delnor Hospital. The medical group on file is Northwestern Medicine Regional Medical Group. Dmand AI also links Dr. Klem to 2 more group practices and clinics, 1 breast imaging center, 1 clinical lab and 1 medical group, 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. David A. Klem's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klem practices, 6 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 |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David A. Klem is one of 1,217 general surgeons in Illinois
Surgery is Dr. Klem's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Klem is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Klem
Counts of general surgeons 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. David A. Klem billed Medicare for 202 services in 2024
CMS data shows 202 Medicare services from Dr. Klem across 9 procedure codes in 2024, for 168 Medicare patients. Medicare paid $29,990 for them.
Dr. Klem's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1742024: 1721%
- Surgery
- 2023: 272024: 3011%
Where Dr. Klem's Medicare services took place, 2024
- In an office9547%
- In a facility10753%
Dr. Klem compared with the Illinois median for general surgeons, 2024
- Dr. Klem
- Illinois median
- Medicare services
- 202vs 194Close to median
- Medicare patients
- 168vs 14417% above
- Part D claims
- 47vs 2868% above
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Klem'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. David A. Klem treated 168 Medicare patients in 2024, average age 74
CMS counts 168 Medicare patients who saw Dr. Klem in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.71, 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. Klem's median patient age at 69, with 33% women.
Dr. Klem's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Klem's Medicare patients by sex, 2024
- Women6438%
- Men10462%
Chronic conditions among Dr. Klem's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Ischemic heart disease34%
- Chronic kidney disease29%
- Diabetes26%
- Atrial fibrillation23%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klem's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women33%
- Men67%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David A. Klem wrote 68 Medicare Part D claims in 2024
In 2024, Dr. Klem wrote 68 Medicare Part D claims for 56 patients. 97% of them were for generic drugs. CMS names the drug for 47 of them, across 1 drug with 11 or more claims each, at $229 in total drug cost. In 2023, CMS named 46 claims across 1 drug.
Dr. Klem's Part D claims by kind of drug, 2024
- Generic66 claims97%
- Brand-name and other2 claims3%
Dr. Klem'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. Klem's Part D claims, 2024
- Opioids81%55 of 68 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: 462024: 472%
Drugs named by CMS: 1 in 2024, 1 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. David A. Klem scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Klem for performance year 2024, reported through an alternative payment model (APM). Dr. Klem accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 33 procedures of hernia repair (minimally invasive) by Dr. Klem, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Klem's MIPS scores, performance year 2024
- 96of 100Final score
- 88.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Klem ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 96th percentile33 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
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. David A. Klem received $12,247 in industry payments from 2016 to 2025
CMS Open Payments shows 65 general payments to Dr. Klem from 7 drug and device companies from 2016 to 2025. Education make up the largest share, 61% of the total. Intuitive Surgical, Inc. paid the most, $11,763.
General payments to Dr. Klem by program year, 2016 to 2025
General payments to Dr. Klem by kind, 2016 to 2025
- Education$7,50061%
- Travel and lodging$2,50820%
- Food and beverage$2,23018%
- Gifts$90%
Companies that paid Dr. Klem 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. David A. Klem graduated from Rush Medical College of Rush University
Dr. Klem graduated from Rush Medical College of Rush University in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David A. Klem'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. David A. Klem
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. David A. Klem's NPI number?
Dr. David A. Klem's NPI number is 1487628475. It was assigned on February 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David A. Klem?
Dr. David A. Klem is a general surgeon in Winfield, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. David A. Klem practice?
Dr. Klem practices at 25 North Winfield Road, Winfield, IL 60190. Dr. Klem's primary practice is Northwestern Medicine Central DuPage Hospital in Winfield, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Klem to 2 group practices and clinics, 1 breast imaging center, 1 clinical lab and 1 medical group.
What is Dr. David A. Klem's office phone number?
The practice phone on file for Dr. Klem is (630) 682-1600.
What is Dr. David A. Klem's medical license number?
Dr. Klem holds Illinois license 036092501.
Which hospitals is Dr. David A. Klem affiliated with?
Dr. Klem practices at Northwestern Medicine Central DuPage Hospital in Winfield, Illinois. Dr. Klem is also affiliated with Northwestern Medicine Delnor Hospital.
What medical group is Dr. David A. Klem part of?
Dr. Klem is linked to Northwestern Medicine Regional Medical Group. Dmand AI links Dr. Klem to 1 more medical group.
Does Dr. David A. Klem accept Medicare?
Yes. CMS data shows Dr. Klem billed Medicare for 202 services in 2024, and Dr. Klem accepts Medicare assignment.
What is Dr. David A. Klem's MIPS score?
Dr. Klem's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. David A. Klem see?
CMS counts 168 Medicare patients who saw Dr. Klem in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. David A. Klem bill to Medicare?
In 2024, Dr. Klem's most billed Medicare services were office visit, new patient (99204), hospital inpatient care (99222) and hospital inpatient care (99232).
Where did Dr. David A. Klem go to medical school?
Dr. Klem graduated from Rush Medical College of Rush University in 1991.
What drugs does Dr. David A. Klem prescribe most?
In 2024 Medicare Part D data, Dr. Klem's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. David A. Klem received payments from drug or device companies?
CMS Open Payments shows $12,247 in general payments to Dr. Klem from 7 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. David A. Klem been practicing?
Dr. Klem graduated from medical school in 1991, 35 years ago.
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