Dr. Lawrence Allen Barr, MD
- Medicare services, 2023
- 767
- Part D claims, 2024
- 706
- Industry payments
- $7,278
- Affiliated sites
- 4
- Medical groups
- 4
- Practice address
- 133 E Brush Hill Rd Ste 202 Suite 202, Elmhurst, IL 60126
- Practice phone
- Call (331) 231-6200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd)
Primary care practice · Elmhurst, Illinois
Find Dr. Barr's professional email, personal email and mobile number
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Dr. Lawrence Allen Barr is a cardiologist in Naperville, Illinois
Dr. Barr practices at Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd) in Elmhurst, Illinois.
Dr. Barr's NPI, 1174560338, was assigned on May 31, 2006. Dr. Barr graduated from Wayne State University School of Medicine in 1979. Dr. Barr holds Illinois license 036.064451.
- NPI
- 1174560338NPI Registry (opens in a new tab)
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Practice phone
- (331) 231-6200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lawrence Allen Barr practices in Elmhurst and Naperville
Dr. Barr's primary practice is Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd), at 133 E Brush Hill Rd Ste 202 Suite 202, Elmhurst, IL 60126. The practice phone is (331) 231-6200. The NPI Registry lists Dr. Barr's practice address as 801 S Washington St, Naperville, IL 60540.
- Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd)Primary133 E Brush Hill Rd Ste 202 Suite 202, Elmhurst, IL 60126Phone(331) 231-6200
- NPI Registry address801 S Washington St, Naperville, IL 60540 · Dupage CountyPhone(331) 231-6200
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Lawrence Allen Barr is affiliated with 4 sites of care and 4 medical groups
Dr. Barr's primary practice is Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd) in Elmhurst, Illinois. The medical group on file is Dreyer Medical Clinic (Advocate Medical Group). Dmand AI also links Dr. Barr to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Lawrence Allen Barr's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barr practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd) | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lawrence Allen Barr is one of 908 cardiologists in Illinois
Cardiovascular disease is Dr. Barr's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Barr is licensed in Illinois.
Specialties and state licenses
- Cardiovascular disease, IllinoisPrimary
Cardiologists near Dr. Barr
Counts of cardiologists 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. Lawrence Allen Barr billed Medicare for 767 services in 2023
CMS data shows 767 Medicare services from Dr. Barr across 13 procedure codes in 2023. Medicare paid $50,955 for them.
Dr. Barr's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1,2242023: 42665%
- Tests and treatments
- 2022: 9202023: 23075%
- Drugs given in the office
- 2022: 1682023: 10040%
- Imaging
- 2022: 342023: 1168%
Where Dr. Barr's Medicare services took place, 2023
- In an office41854%
- In a facility34946%
Dr. Barr compared with the Illinois median for cardiologists, 2023
- Dr. Barr
- Illinois median
- Medicare services
- 767vs 1,93660% below
- Part D claims
- 593vs 1,50261% below
Medians across 906 cardiologists in Illinois with Dmand AI profiles that report each measure.
Dr. Barr's most billed Medicare procedure codes, 2023
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. Barr and other cardiologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lawrence Allen Barr's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Barr's median patient age at 73, with 39% women.
Dr. Barr's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women39%
- Men61%
Source: Dmand AI Patient Panel Data
Dr. Lawrence Allen Barr wrote 706 Medicare Part D claims in 2024
In 2024, Dr. Barr wrote 706 Medicare Part D claims for 190 patients. 82% of them were for generic drugs. CMS names the drug for 593 of them, across 18 drugs with 11 or more claims each, at $102,755 in total drug cost. In 2023, CMS named 2,461 claims across 36 drugs.
Dr. Barr's Part D claims by kind of drug, 2024
- Generic581 claims82%
- Brand-name125 claims18%
Dr. Barr'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,4612024: 59376%
Drugs named by CMS: 18 in 2024, 36 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
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Dr. Lawrence Allen Barr received $7,278 in industry payments from 2016 to 2023
CMS Open Payments shows 341 general payments to Dr. Barr from 23 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 99% of the total. Janssen Pharmaceuticals, Inc paid the most, $2,761.
General payments to Dr. Barr by program year, 2016 to 2023
General payments to Dr. Barr by kind, 2016 to 2023
- Food and beverage$7,24199%
- Education$381%
Companies that paid Dr. Barr the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lawrence Allen Barr graduated from Wayne State University School of Medicine
Dr. Barr graduated from Wayne State University School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lawrence Allen Barr'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| 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. Lawrence Allen Barr
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. Lawrence Allen Barr's NPI number?
Dr. Lawrence Allen Barr's NPI number is 1174560338. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lawrence Allen Barr?
Dr. Lawrence Allen Barr is a cardiologist in Naperville, Illinois. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Lawrence Allen Barr practice?
Dr. Barr practices at 133 E Brush Hill Rd Ste 202 Suite 202, Elmhurst, IL 60126. Dr. Barr also practices at 801 S Washington St, Naperville, IL 60540. Dr. Barr's primary practice is Endeavor Health Elmhurst Hospital - Primary Care - Elmhurst (E Brush Hill Rd) in Elmhurst, Illinois. Dmand AI also links Dr. Barr to 3 group practices and clinics and 3 medical groups.
What is Dr. Lawrence Allen Barr's office phone number?
The practice phone on file for Dr. Barr is (331) 231-6200.
What is Dr. Lawrence Allen Barr's medical license number?
Dr. Barr holds Illinois license 036.064451.
What medical group is Dr. Lawrence Allen Barr part of?
Dr. Barr is linked to Dreyer Medical Clinic (Advocate Medical Group). Dmand AI links Dr. Barr to 3 more medical groups.
Does Dr. Lawrence Allen Barr accept Medicare?
Yes. CMS data shows Dr. Barr billed Medicare for 767 services in 2023.
What services does Dr. Lawrence Allen Barr bill to Medicare?
In 2023, Dr. Barr's most billed Medicare services were office visit, established patient (99214), injected or infused drug (J2785) and hospital inpatient care (99233).
Where did Dr. Lawrence Allen Barr go to medical school?
Dr. Barr graduated from Wayne State University School of Medicine in 1979.
What drugs does Dr. Lawrence Allen Barr prescribe most?
In 2024 Medicare Part D data, Dr. Barr's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Eliquis.
Has Dr. Lawrence Allen Barr received payments from drug or device companies?
CMS Open Payments shows $7,278 in general payments to Dr. Barr from 23 companies from 2016 to 2023. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Lawrence Allen Barr been practicing?
Dr. Barr graduated from medical school in 1979, 47 years ago.
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