Dr. Daniel John Klarr, MD
- Medicare services, 2024
- 367
- Medicare patients, 2024
- 172
- Part D claims, 2024
- 100
- Hospital affiliations
- 2
- Industry payments
- $105
- Practice address
- 1 Ingalls Drive, Harvey, IL 60426
- Practice phone
- Call (708) 333-2300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Klarr's professional email, personal email and mobile number
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Dr. Daniel John Klarr is an internist in Harvey, Illinois
Dr. Klarr practices at UChicago Medicine Ingalls Memorial Hospital in Harvey, Illinois, part of The University of Chicago.
Dr. Klarr's NPI, 1518427400, was assigned on March 25, 2019. Dr. Klarr holds Illinois license 036.161532.
- NPI
- 1518427400NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668715343
- NPI enumeration date
- March 25, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 333-2300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel John Klarr practices at UChicago Medicine Ingalls Memorial Hospital in Harvey, Illinois
Dr. Klarr's primary practice is UChicago Medicine Ingalls Memorial Hospital, at 1 Ingalls Drive, Harvey, IL 60426 in Cook County. The practice phone is (708) 333-2300.
- UChicago Medicine Ingalls Memorial Hospital1 Ingalls Drive, Harvey, IL 60426 · Cook CountyPhone(708) 333-2300
Source: Dmand AI Affiliation Data
Dr. Daniel John Klarr is affiliated with 2 sites of care and 2 medical groups
Dr. Klarr's primary practice is UChicago Medicine Ingalls Memorial Hospital in Harvey, Illinois, part of The University of Chicago. Dr. Klarr is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI also links Dr. Klarr to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel John Klarr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klarr practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UChicago Medicine Ingalls Memorial Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel John Klarr is one of 5,652 internists in Illinois
Internal medicine is Dr. Klarr's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Klarr is licensed in Illinois.
Specialties and state licenses
- Internal medicine, IllinoisPrimary
Internists near Dr. Klarr
Counts of internists 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. Daniel John Klarr billed Medicare for 367 services in 2024
CMS data shows 367 Medicare services from Dr. Klarr across 6 procedure codes in 2024, for 172 Medicare patients. Medicare paid $37,430 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Klarr's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2602024: 36741%
Dr. Klarr compared with the Illinois median for internists, 2024
- Dr. Klarr
- Illinois median
- Medicare services
- 367vs 56635% below
- Medicare patients
- 172vs 20817% below
- Part D claims
- 12vs 28496% below
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Dr. Klarr'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. Daniel John Klarr treated 172 Medicare patients in 2024, average age 70
CMS counts 172 Medicare patients who saw Dr. Klarr in 2024. The largest group is 65 to 74, with 66 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 56% are also on Medicaid. Their average risk score is 3.61, 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. Klarr's median patient age at 71, with 49% women.
Dr. Klarr's Medicare patients by age, 2024
Dr. Klarr's Medicare patients by sex, 2024
- Women9354%
- Men7946%
Chronic conditions among Dr. Klarr's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis62%
- Chronic kidney disease57%
- Heart failure55%
- Diabetes50%
- Ischemic heart disease46%
- Mood disorders44%
Share of Medicare patients with each condition. A patient can have several.
Dr. Klarr'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
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Daniel John Klarr wrote 100 Medicare Part D claims in 2024
In 2024, Dr. Klarr wrote 100 Medicare Part D claims for 54 patients. 78% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $196 in total drug cost. In 2022, CMS named 340 claims across 18 drugs.
Dr. Klarr's Part D claims by kind of drug, 2024
- Generic78 claims78%
- Brand-name22 claims22%
Dr. Klarr's most prescribed drugs by claims, 2023
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. Klarr's Part D claims, 2024
- Opioids12%12 of 100 claims
- Antibiotics18%18 of 100 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 3402023: 1296%
Drugs named by CMS: 1 in 2023, 18 in 2022.
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
How Dr. Daniel John Klarr takes part in Medicare
Dr. Klarr 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)
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Dr. Daniel John Klarr received $105 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Klarr 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, $105.
Companies that paid Dr. Klarr the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Daniel John Klarr'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Daniel John Klarr
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. Daniel John Klarr's NPI number?
Dr. Daniel John Klarr's NPI number is 1518427400. It was assigned on March 25, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel John Klarr?
Dr. Daniel John Klarr is an internist in Harvey, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel John Klarr practice?
Dr. Klarr practices at 1 Ingalls Drive, Harvey, IL 60426. Dr. Klarr's primary practice is UChicago Medicine Ingalls Memorial Hospital in Harvey, Illinois, part of The University of Chicago. Dmand AI also links Dr. Klarr to 1 medical group.
What is Dr. Daniel John Klarr's office phone number?
The practice phone on file for Dr. Klarr is (708) 333-2300.
What is Dr. Daniel John Klarr's medical license number?
Dr. Klarr holds Illinois license 036.161532.
Which hospitals is Dr. Daniel John Klarr affiliated with?
Dr. Klarr practices at UChicago Medicine Ingalls Memorial Hospital in Harvey, Illinois. Dr. Klarr is also affiliated with University of Chicago Medical Center.
What medical group is Dr. Daniel John Klarr part of?
Dr. Klarr is linked to UChicago Medicine Physicians (University of Chicago Physicians Group). Dmand AI links Dr. Klarr to 1 more medical group.
Does Dr. Daniel John Klarr accept Medicare?
Yes. CMS data shows Dr. Klarr billed Medicare for 367 services in 2024, and Dr. Klarr accepts Medicare assignment.
How many Medicare patients does Dr. Daniel John Klarr see?
CMS counts 172 Medicare patients who saw Dr. Klarr in 2024, with an average age of 70.
What services does Dr. Daniel John Klarr bill to Medicare?
In 2024, Dr. Klarr's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99223) and hospital inpatient care (99238).
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What drugs does Dr. Daniel John Klarr prescribe most?
In 2023 Medicare Part D data, Dr. Klarr's most prescribed drugs by claims were Atorvastatin Calcium.
Has Dr. Daniel John Klarr received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to Dr. Klarr from 1 company from 2019 to 2019. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Daniel John Klarr been practicing?
Dr. Klarr graduated from medical school in 2019, 7 years ago.
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