Dr. Christian P. Larsen, MD

  • Falls Church, VA
  • Infectious disease specialist
NPI1124477419PAC ID6901192723
Medicare services, 2024
320
Medicare patients, 2024
165
Part D claims, 2024
286
Publications
7
MIPS score, 2024
83
Practice address
3300 Gallows Rd, Falls Church, VA 22046
Practice phone
Call (703) 698-3659
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Inova Fairfax Hospital - Unit

Acute Care Hospital-Unit · Falls Church, Virginia

See all 6 affiliations

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Dr. Christian P. Larsen is an infectious disease specialist in Falls Church, Virginia

Dr. Larsen practices at Inova Fairfax Hospital - Unit in Falls Church, Virginia.

Dr. Larsen's NPI, 1124477419, was assigned on June 7, 2016. Dr. Larsen graduated from University of Maryland School of Medicine - Baltimore in 2015. Dr. Larsen holds Texas license T3122.

NPI and contact details
Medicare PAC ID
6901192723
NPI enumeration date
June 7, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(703) 698-3659
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
36
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Christian P. Larsen practices at Inova Fairfax Hospital - Unit in Falls Church, Virginia

Dr. Larsen's primary practice is Inova Fairfax Hospital - Unit, at 3300 Gallows Rd, Falls Church, VA 22046 in Falls Church City. The practice phone is (703) 698-3659.

  • Inova Fairfax Hospital - Unit
    3300 Gallows Rd, Falls Church, VA 22046 · Falls Church CityPhone(703) 698-3659

Source: Dmand AI Affiliation Data

Dr. Christian P. Larsen is affiliated with 4 sites of care and 2 medical groups

Dr. Larsen's primary practice is Inova Fairfax Hospital - Unit in Falls Church, Virginia. Dr. Larsen is also affiliated with Inova Fairfax Hospital. The medical group on file is Inova Urgent Care Center. Dmand AI also links Dr. Larsen to 2 more hospitals and 1 medical group, each named with a free account.

See all 6 affiliations for Dr. Larsen

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Christian P. Larsen's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larsen practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Inova Fairfax Hospital - UnitAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Christian P. Larsen is one of 210 infectious disease specialists in Virginia

Infectious disease is Dr. Larsen's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Larsen is board certified in infectious disease by the American Board of Internal Medicine. Dmand AI has Dr. Larsen's licenses on file in 2 states: Texas and Massachusetts.

Specialties and state licenses

  • Infectious disease, TexasPrimaryLicense T3122 · 2021 to 2026 · taxonomy 207RI0200X
  • Massachusetts license2016 to 2021

Clinical focus

Dmand AI lists acute skin infection, endocarditis, hiv/aids, joint or bone infection, pneumonia and UTI among the conditions Dr. Larsen treats.

Infectious disease specialists near Dr. Larsen

Counts of infectious disease specialists 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. Christian P. Larsen billed Medicare for 320 services in 2024

CMS data shows 320 Medicare services from Dr. Larsen across 6 procedure codes in 2024, for 165 Medicare patients. Medicare paid $28,028 for them.

Medicare services, 2024320
Medicare patients165
Paid by Medicare$28,028
Procedure codes6

Dr. Larsen's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 3932024: 32019%

Where Dr. Larsen's Medicare services took place, 2024

  • In an office8326%
  • In a facility23774%

Dr. Larsen compared with the Virginia median for infectious disease specialists, 2024

  • Dr. Larsen
  • Virginia median
Medicare services
320vs 324Close to median
Medicare patients
165vs 1566% above
Part D claims
171vs 14617% above

Medians across 189 infectious disease specialists in Virginia with Dmand AI profiles that report each measure.

Dr. 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.

See all procedures by Dr. Larsen

Need commercial claims for Dr. Larsen?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Larsen and other infectious disease specialists in Virginia.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Christian P. Larsen treated 165 Medicare patients in 2024, average age 64

CMS counts 165 Medicare patients who saw Dr. Larsen in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 18% are also on Medicaid. Their average risk score is 4.84, 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. Larsen's median patient age at 58, with 46% women.

Medicare patients, 2024165
Average age64
Average risk score4.84
Also on Medicaid18%

Dr. Larsen's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Larsen's Medicare patients by sex, 2024

  • Women6741%
  • Men9859%

Chronic conditions among Dr. Larsen's Medicare patients, 2024

  1. Chronic kidney disease75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Diabetes68%
  5. Ischemic heart disease62%
  6. Arthritis48%
  7. Heart failure47%
  8. Anxiety35%

Share of Medicare patients with each condition. A patient can have several.

Dr. 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 58

Patient panel by sex, all payers

  • Women46%
  • Men53%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Christian P. Larsen wrote 286 Medicare Part D claims in 2024

In 2024, Dr. Larsen wrote 286 Medicare Part D claims for 76 patients. 85% of them were for generic drugs. CMS names the drug for 171 of them, across 11 drugs with 11 or more claims each, at $117,695 in total drug cost. In 2023, CMS named 238 claims across 13 drugs.

Part D claims, 2024286
Drugs named by CMS11
Total drug cost$117,695
Part D patients76

Dr. Larsen's Part D claims by kind of drug, 2024

  • Generic242 claims85%
  • Brand-name and other44 claims15%

Dr. 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 Dr. Larsen's Part D claims, 2024

  • Antibiotics43%123 of 286 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: 2382024: 17128%

Drugs named by CMS: 11 in 2024, 13 in 2023.

See all prescribing by Dr. Larsen

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. Christian P. Larsen scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Larsen for performance year 2024, reported as part of a group. Dr. Larsen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Larsen as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Larsen's MIPS scores, performance year 2024

  • 83of 100Final score
  • 70.1of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 73of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Dr. Christian P. Larsen has 7 publications on record

Dmand AI links 7 papers to Dr. Larsen, published from 2010 to 2022. 2022 was the busiest year, with 2. The most frequent topics are Cells, Cultured, Neurons and Stem Cells. Dr. Larsen's most frequent co-authors are Spencer Carter, Kody R. Crowell and Maryjane A. Farr, MD.

Papers7
Years published2010 to 2022

Dr. Larsen's papers by year, 2010 to 2022

Topics Dr. Larsen writes about most

  • Cells, Cultured
  • Neurons
  • Stem Cells

Dr. Larsen's most frequent co-authors

Recent publications by Dr. Larsen

See all 7 publications and co-authors

See who Dr. Larsen researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Larsen works with, so you can find a warm path to the right infectious disease specialists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Christian P. Larsen received $20 in industry payments in 2023

CMS Open Payments shows 1 general payment to Dr. Larsen from 1 drug or device company in 2023. Education make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $20.

Companies that paid Dr. Larsen the most, 2023 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Larsen

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Christian P. Larsen graduated from University of Maryland School of Medicine - Baltimore

Dr. Larsen graduated from University of Maryland School of Medicine - Baltimore in 2015. Dr. Larsen is a member of AOA, ACP and American Society of Tropical Medicine and Hygiene.

  1. Medical schoolUniversity of Maryland School of Medicine - Baltimore
  2. Board certified in infectious diseaseAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Christian P. Larsen accepts plans from 18 insurance carriers

Dr. Larsen is in network with 18 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Dr. Larsen accepts, by number of carriers

  1. PPO12
  2. HMO11
  3. Medicare7
  4. POS4
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Christian P. Larsen's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Christian P. 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 Dr. Christian P. Larsen's NPI number?

Dr. Christian P. Larsen's NPI number is 1124477419. It was assigned on June 7, 2016, and it is active in the NPI Registry.

What kind of doctor is Dr. Christian P. Larsen?

Dr. Christian P. Larsen is an infectious disease specialist in Falls Church, Virginia. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. Christian P. Larsen practice?

Dr. Larsen practices at 3300 Gallows Rd, Falls Church, VA 22046. Dr. Larsen's primary practice is Inova Fairfax Hospital - Unit in Falls Church, Virginia. Dmand AI also links Dr. Larsen to 2 hospitals and 1 medical group.

What is Dr. Christian P. Larsen's office phone number?

The practice phone on file for Dr. Larsen is (703) 698-3659.

What is Dr. Christian P. Larsen's medical license number?

Dr. Larsen holds Texas license T3122, one of the licenses on file in 2 states.

Which states has Dr. Christian P. Larsen been licensed in?

Dmand AI has state licenses on file for Dr. Larsen in Texas (2021 to 2026) and Massachusetts (2016 to 2021).

Which hospitals is Dr. Christian P. Larsen affiliated with?

Dr. Larsen is affiliated with Inova Fairfax Hospital. Dmand AI links Dr. Larsen to 3 more hospitals.

What medical group is Dr. Christian P. Larsen part of?

Dr. Larsen is linked to Inova Urgent Care Center. Dmand AI links Dr. Larsen to 1 more medical group.

Does Dr. Christian P. Larsen accept Medicare?

Yes. CMS data shows Dr. Larsen billed Medicare for 320 services in 2024, and Dr. Larsen accepts Medicare assignment.

Does Dr. Christian P. Larsen offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Larsen as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Christian P. Larsen's MIPS score?

Dr. Larsen's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.

How many Medicare patients does Dr. Christian P. Larsen see?

CMS counts 165 Medicare patients who saw Dr. Larsen in 2024, with an average age of 64.

Is Dr. Christian P. Larsen board certified?

Yes. Dr. Larsen is board certified in infectious disease by the American Board of Internal Medicine.

What services does Dr. Christian P. Larsen bill to Medicare?

In 2024, Dr. Larsen's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and office visit, established patient (99215).

Where did Dr. Christian P. Larsen go to medical school?

Dr. Larsen graduated from University of Maryland School of Medicine - Baltimore in 2015.

What drugs does Dr. Christian P. Larsen prescribe most?

In 2024 Medicare Part D data, Dr. Larsen's most prescribed drugs by claims were Isoniazid, Fosfomycin Tromethamine and Nitrofurantoin.

Has Dr. Christian P. Larsen received payments from drug or device companies?

CMS Open Payments shows $20 in general payments to Dr. Larsen from 1 company from 2023 to 2023. The largest total came from Merck Sharp & Dohme Corporation.

How long has Dr. Christian P. Larsen been practicing?

Dr. Larsen graduated from medical school in 2015, 11 years ago.

Does Dr. Christian P. Larsen do research?

Dmand AI links 7 publications to Dr. Larsen, published from 2010 to 2022.

Who does Dr. Christian P. Larsen publish with?

Dr. Larsen's most frequent co-authors are Spencer Carter (1 shared paper), Kody R. Crowell (1 shared paper) and Maryjane A. Farr, MD (1 shared paper).

What insurance does Dr. Christian P. Larsen accept?

Dr. Larsen is in network with 18 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

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