Dr. Lars Johann Johnson, MD
- Medicare services, 2023
- 55
- Hospital affiliations
- 2
- Industry payments
- $172
- Medical groups
- 3
- State license
- 1
- Practice address
- 4201 Medical Center Drive, Mchenry, IL 60050
- Practice phone
- Call (815) 344-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Johnson'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. Lars Johann Johnson is a pulmonologist in Mchenry, Illinois
Dr. Johnson practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare.
Dr. Johnson's NPI, 1619461928, was assigned on June 20, 2018. Dr. Johnson graduated from Ohio State University College of Medicine in 2014. Dr. Johnson holds Illinois license 036165458.
- NPI
- 1619461928NPI Registry (opens in a new tab)
- NPI enumeration date
- June 20, 2018
- NPI status
- Active
- Practice phone
- (815) 344-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Lars Johann Johnson practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois
Dr. Johnson's primary practice is Northwestern Medicine McHenry Hospital, at 4201 Medical Center Drive, Mchenry, IL 60050 in Mc Henry County. The practice phone is (815) 344-5000.
- Northwestern Medicine McHenry Hospital4201 Medical Center Drive, Mchenry, IL 60050 · Mc Henry CountyPhone(815) 344-5000
Source: Dmand AI Affiliation Data
Dr. Lars Johann Johnson is affiliated with 2 sites of care and 3 medical groups
Dr. Johnson's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is University of Michigan Health. Dmand AI also links Dr. Johnson to 1 more hospital and 2 medical groups, 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. Lars Johann Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine McHenry Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Lars Johann Johnson is one of 517 pulmonologists in Illinois
Pulmonary disease is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Johnson is licensed in Illinois.
Specialties and state licenses
- Pulmonary disease, IllinoisPrimary
Pulmonologists near Dr. Johnson
Counts of pulmonologists 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. Lars Johann Johnson billed Medicare for 55 services in 2023
CMS data shows 55 Medicare services from Dr. Johnson across 1 procedure code in 2023. Medicare paid $7,644 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 1312023: 5558%
Dr. Johnson compared with the Illinois median for pulmonologists, 2023
- Dr. Johnson
- Illinois median
- Medicare services
- 55vs 76993% below
Medians across 522 pulmonologists in Illinois with Dmand AI profiles that report each measure.
Dr. Johnson'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. Johnson and other pulmonologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lars Johann Johnson's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 65, with 38% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women38%
- Men63%
Source: Dmand AI Patient Panel Data
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Dr. Lars Johann Johnson received $172 in industry payments in 2024
CMS Open Payments shows 2 general payments to Dr. Johnson from 2 drug and device companies in 2024. Food and beverage make up the largest share, 100% of the total. Actelion Pharmaceuticals US, Inc. paid the most, $152.
Companies that paid Dr. Johnson the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lars Johann Johnson graduated from Ohio State University College of Medicine
Dr. Johnson graduated from Ohio State University College of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lars Johann Johnson'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 Data |
| 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. Lars Johann Johnson
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. Lars Johann Johnson's NPI number?
Dr. Lars Johann Johnson's NPI number is 1619461928. It was assigned on June 20, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Lars Johann Johnson?
Dr. Lars Johann Johnson is a pulmonologist in Mchenry, Illinois. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Lars Johann Johnson practice?
Dr. Johnson practices at 4201 Medical Center Drive, Mchenry, IL 60050. Dr. Johnson's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Johnson to 1 hospital and 2 medical groups.
What is Dr. Lars Johann Johnson's office phone number?
The practice phone on file for Dr. Johnson is (815) 344-5000.
What is Dr. Lars Johann Johnson's medical license number?
Dr. Johnson holds Illinois license 036165458.
Which hospitals is Dr. Lars Johann Johnson affiliated with?
Dr. Johnson practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois. Dmand AI links Dr. Johnson to 1 more hospital.
What medical group is Dr. Lars Johann Johnson part of?
Dr. Johnson is linked to University of Michigan Health. Dmand AI links Dr. Johnson to 2 more medical groups.
Does Dr. Lars Johann Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 55 services in 2023.
What services does Dr. Lars Johann Johnson bill to Medicare?
In 2023, Dr. Johnson's most billed Medicare services were hospital inpatient care (99223).
Where did Dr. Lars Johann Johnson go to medical school?
Dr. Johnson graduated from Ohio State University College of Medicine in 2014.
Has Dr. Lars Johann Johnson received payments from drug or device companies?
CMS Open Payments shows $172 in general payments to Dr. Johnson from 2 companies from 2024 to 2024. The largest total came from Actelion Pharmaceuticals US, Inc.
How long has Dr. Lars Johann Johnson been practicing?
Dr. Johnson graduated from medical school in 2014, 12 years ago.
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