NPPES file of Aug 9, 2026

Karsen Corn, MD

Orthopaedic Surgery Physician · Saint Louis, MO

Karsen Corn, MD is an orthopaedic surgery physician with a practice address in Saint Louis, Missouri, and NPI 1104386796, issued on Mar 21, 2019. Check the license (Missouri 2025032744, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1104386796
Name
Karsen Corn
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
2025032744 MO
Self-reported in NPPES; status is on the state search
Practice location
1201 S Grand Blvd, Saint Louis, MO 63104
Phone
(146) 172-0003
Enumerated
Mar 21, 2019
Record last updated
Aug 11, 2025
Fax
(314) 268-5121
Medicare enrollment
Enrolled (PECOS I20250818002734); accepts Medicare assignment
Medical or professional school
Indiana University School Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1201 S Grand Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Daniel Aaronson, M.D.Neurological Surgery Physician1679937908
  2. Brian Abboud, MDStudent in an Organized Health Care Education/Training Program1134821879
  3. Catherine Aber, MDStudent in an Organized Health Care Education/Training Program1215878293
  4. Krystel Abi KaramStudent in an Organized Health Care Education/Training Program1912708124
  5. Timothy Adrian, APRNAcute Care Nurse Practitioner1578437182
  6. Baris Afsar, M.D.Student in an Organized Health Care Education/Training Program1235976143

Verify Karsen Corn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2025032744
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Missouri license search

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75% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

85 Medicare Part D claims for 44 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 31 claims were for opioids.

  1. Karsen Corn85
  2. Specialty average346

Most prescribed

  1. Gabapentin23 claims
  2. Oxycodone Hcl18 claims
  3. Hydrocodone-Acetaminophen12 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $2,293.42

22 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karsen Corn$2,293
  2. Specialty average$23,023

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Ssm Health Care GroupSaint Louis, MO
  2. Ssm Medical Group IncLake St Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Karsen Corn among 514 orthopaedic surgery physician records in Missouri

Karsen Corn, MD is one of 514 orthopaedic surgery physician records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 83% of them.

  • NPI issued2019 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2019 · median 2006 among the 302 with a school on file
  • Record last updated2025 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in Missouri

There are 514 orthopaedic surgery physician records in Missouri.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Ashley Ali, M.D.Saint Louis, MO 631041922340603
  2. John Boudreau, MDSaint Louis, MO 631041053338640
  3. Terry Bujnak, DOSaint Louis, MO 631041083279772
  4. Peter Cohn, M.D.Saint Louis, MO 631041497174718
  5. Elizabeth Engel, MDSaint Louis, MO 631041093726655
  6. Djoldas Kuldjanov, MDSaint Louis, MO 631041629186556
  7. Thomas Otto, MDSaint Louis, MO 631041417979113
  8. Howard Place, MDSaint Louis, MO 631041245253590

Common questions

What is Karsen Corn, MD's NPI number?

Karsen Corn, MD's National Provider Identifier (NPI) is 1104386796, issued on Mar 21, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Karsen Corn, MD located?

The NPPES record lists a practice address at 1201 S Grand Blvd, Saint Louis, MO, 63104. Phone: (146) 172-0003. Providers update this record themselves, so call before visiting.

How can I verify Karsen Corn, MD's license?

NPPES lists Missouri license number 2025032744, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Karsen Corn, MD prescribe under Medicare Part D?

In 2024, Karsen Corn, MD had 85 Medicare Part D claims for 44 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.