John Kenyon Larsen, PA-C
- Medicare services, 2024
- 864
- Medicare patients, 2024
- 295
- Part D claims, 2024
- 2,765
- Hospital affiliations
- 4
- Industry payments
- $42,102
- Practice address
- 1902 Corona Rd, Columbia, MO 65203
- Practice phone
- Call (573) 303-5845
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Viemed
Columbia, Missouri
Find John Larsen'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.
John Kenyon Larsen is a physician assistant in Columbia, Missouri
John Larsen practices at Viemed in Columbia, Missouri.
John Larsen's NPI, 1538422118, was assigned on June 19, 2012. John Larsen graduated from Eastern Virginia Medical School in 2012. John Larsen holds Nevada license PA2016.
- NPI
- 1538422118NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971755372
- NPI enumeration date
- June 19, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (573) 303-5845
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
John Kenyon Larsen practices at Viemed in Columbia, Missouri
John Larsen's primary practice is Viemed, at 1902 Corona Rd, Columbia, MO 65203 in Boone County. The practice phone is (573) 303-5845.
- Viemed1902 Corona Rd, Columbia, MO 65203 · Boone CountyPhone(573) 303-5845
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
John Kenyon Larsen is affiliated with 5 sites of care and 3 medical groups
John Larsen's primary practice is Viemed in Columbia, Missouri. John Larsen is also affiliated with Renown Regional Medical Center. The medical group on file is Riverside Gastroenterology Specialists. Dmand AI also links John Larsen to 3 more hospitals and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John Kenyon Larsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Larsen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Viemed | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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John Kenyon Larsen is one of 1,484 physician assistants in Missouri
Physician assistant is John Larsen's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Larsen is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Dmand AI has John Larsen's licenses on file in 2 states: Nevada and Virginia.
Specialties and state licenses
- Physician assistant, NevadaPrimary
- Virginia license
Clinical focus
Dmand AI lists asthma, bronchitis, chronic kidney disease, chronic nasal allergies, chronic obstructive pulmonary disease (COPD), chronic respiratory failure, fluid and electrolyte imbalances and hypersomnia among the conditions John Larsen treats.
Physician assistants near John Larsen
Counts of physician assistants 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
John Kenyon Larsen billed Medicare for 864 services in 2024
CMS data shows 864 Medicare services from John Larsen across 10 procedure codes in 2024, for 295 Medicare patients. Medicare paid $60,787 for them.
John Larsen's Medicare services by type, 2024
- Office and hospital visits684
- Tests and treatments180
Where John Larsen's Medicare services took place, 2024
- In an office81394%
- In a facility516%
John Larsen compared with the Missouri median for physician assistants, 2024
- John Larsen
- Missouri median
- Medicare patients
- 295vs 1292.3 times
Medians across 1,029 physician assistants in Missouri with Dmand AI profiles that report each measure.
John Larsen'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 John Larsen and other physician assistants in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
John Kenyon Larsen treated 295 Medicare patients in 2024, average age 76
CMS counts 295 Medicare patients who saw John Larsen in 2024. The largest group is 75 to 84, with 126 patients. 75% of them have copd, and 75% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts John Larsen's median patient age at 72, with 58% women.
John Larsen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John Larsen's Medicare patients by sex, 2024
- Women16456%
- Men13144%
Chronic conditions among John Larsen's Medicare patients, 2024
- COPD75%
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Ischemic heart disease40%
- Heart failure37%
- Anxiety33%
- Atrial fibrillation33%
Share of Medicare patients with each condition. A patient can have several.
John Larsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Kenyon Larsen wrote 2,765 Medicare Part D claims in 2024
In 2024, John Larsen wrote 2,765 Medicare Part D claims for 388 patients. 35% of them were for generic drugs. CMS names the drug for 2,576 of them, across 27 drugs with 11 or more claims each, at $1,440,555 in total drug cost.
John Larsen's Part D claims by kind of drug, 2024
- Generic978 claims35%
- Brand-name1,787 claims65%
John Larsen'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 John Larsen's Part D claims, 2024
- Antibiotics6%170 of 2,765 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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 John Kenyon Larsen takes part in Medicare
John Larsen 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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John Kenyon Larsen received $42,102 in industry payments from 2024 to 2025
CMS Open Payments shows 237 general payments to John Larsen from 14 drug and device companies from 2024 to 2025. Speaker and faculty fees make up the largest share, 44% of the total. Regeneron Pharmaceuticals, Inc. paid the most, $32,031.
General payments to John Larsen by program year, 2024 to 2025
General payments to John Larsen by kind, 2024 to 2025
- Speaker and faculty fees$18,39844%
- Consulting fees$11,98328%
- Travel and lodging$6,15215%
- Food and beverage$5,55913%
- Education$110%
Companies that paid John Larsen the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John Kenyon Larsen graduated from Eastern Virginia Medical School
John Larsen graduated from Eastern Virginia Medical School in 2012.
- Medical school
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for John Kenyon Larsen'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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 John Kenyon Larsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Kenyon Larsen's NPI number?
John Kenyon Larsen's NPI number is 1538422118. It was assigned on June 19, 2012, and it is active in the NPI Registry.
What does John Kenyon Larsen specialize in?
John Kenyon Larsen is a physician assistant in Columbia, Missouri. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John Kenyon Larsen practice?
John Larsen practices at 1902 Corona Rd, Columbia, MO 65203. John Larsen's primary practice is Viemed in Columbia, Missouri. Dmand AI also links John Larsen to 3 hospitals and 2 medical groups.
What is John Kenyon Larsen's office phone number?
The practice phone on file for John Larsen is (573) 303-5845.
What is John Kenyon Larsen's medical license number?
John Larsen holds Nevada license PA2016, one of the licenses on file in 2 states.
Which states has John Kenyon Larsen been licensed in?
Dmand AI has state licenses on file for John Larsen in Nevada and Virginia.
Which hospitals is John Kenyon Larsen affiliated with?
John Larsen is affiliated with Renown Regional Medical Center. Dmand AI links John Larsen to 3 more hospitals.
What medical group is John Kenyon Larsen part of?
John Larsen is linked to Riverside Gastroenterology Specialists. Dmand AI links John Larsen to 2 more medical groups.
Does John Kenyon Larsen accept Medicare?
Yes. CMS data shows John Larsen billed Medicare for 864 services in 2024, and John Larsen accepts Medicare assignment.
How many Medicare patients does John Kenyon Larsen see?
CMS counts 295 Medicare patients who saw John Larsen in 2024, with an average age of 76.
Show 6 more questionsShow fewer questions
Is John Kenyon Larsen board certified?
Yes. John Larsen is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does John Kenyon Larsen bill to Medicare?
In 2024, John Larsen's most billed Medicare services were office visit, established patient (99214), lung function service (94010) and office visit, established patient (99213).
Where did John Kenyon Larsen go to medical school?
John Larsen graduated from Eastern Virginia Medical School in 2012.
What drugs does John Kenyon Larsen prescribe most?
In 2024 Medicare Part D data, John Larsen's most prescribed drugs by claims were Trelegy Ellipta, Breztri Aerosphere and Prednisone.
Has John Kenyon Larsen received payments from drug or device companies?
CMS Open Payments shows $42,102 in general payments to John Larsen from 14 companies from 2024 to 2025. The largest total came from Regeneron Pharmaceuticals, Inc.
How long has John Kenyon Larsen been practicing?
John Larsen graduated from medical school in 2012, 14 years ago.
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