Placeholder Photo for Jan Kasal, MD

Dr. Jan Kasal is an internist in Saint Louis, MO. He is trained to diagnose & treat an extensive variety of diseases & illnesses in adults.


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Mercy Clinic Adult Critical Care, LLC  


Please Note: This link will direct you to a third-party website unaffiliated with (, where you're able to request or schedule an appointment online with Dr. Jan Kasal.


(314) 251-4155


615 S New Ballas Road, Saint Louis, MO 63141

Office Details

Doctor Specialty Internal Medicine
Practice Specialty Multi Specialty
Languages Spoken English

Mercy Clinic Fort Smith Communities  



7001 Rogers Avene, Suite 200, Fort Smith, AR 72903-4022

Office Details

Doctor Specialty Critical Care Medicine
Languages Spoken English

Mercy Clinic Adult Critical Care, LLC  


901 E 5th Street, Washington, MO 63090-3127

Office Details

Doctor Specialty Internal Medicine
Languages Spoken English

Insurance Accepted  

  • Medicare

About Dr. Kasal
Dr. Kasal



Dr. Jan Kasal graduated from Other in 1993.

Dr. Kasal has three offices in Missouri and Arkansas where he specializes in Internal Medicine and Critical Care Medicine.

Dr. Kasal works with seventy-eight doctors including Dr. Sanjay Subramanian and Dr. Muhammad Javed.


Education & Training  

Medical School

  • Other
    MD • 1993

Hospital Affiliations

  • Mercy Hospitals East Communities
  • Mercy Hospital - Fort Smith
  • Sequoyah County City of Sallisaw Hospital Authority

Languages Spoken  

  • English

Dr. Kasal's Medicare Fee‑for‑Service Data (2014)  

Please Note: The information displayed below is sourced from the 2014 Medicare Physician and Other Supplier National Provider Identifier (NPI) Aggregate Report. It's important to remember that the statistics below are not inclusive of all patients treated by Dr. Kasal, but only those who participate in Medicare.

  • Participates in Medicare?: Yes 
  • Number of HCPCS Codes: 18 
  • Number of Services: 731 
  • Medical Suppress Indicator:  
  • Number of HCPCS Associated With Medical Services: 18 
  • Number of Medical Services: 731 
  • Number of Medicare Patients with Medical Services: 240 
  Medicare Patient Demographics
  • Total Number of Medicare Patients: 240 
  • Average Age of Medicare Patients: 71 
  • Number of Patients Under Age 65: 58 
  • Number of Patients Age 65 to 74: 77 
  • Number of Patients Age 75 to 84: 67 
  • Number of Patients Over Age 84: 38 
  • Number of Female Patients : 132 
  • Number of Male Patients: 108 
  • Number of Non-Hispanic White Patients: 201 
  • Number of Black or African American Patients: 0 
  • Number of Asian Pacific Islander Patients: 0 
  • Number of Hispanic Patients: 0 
  • Number of American Indian/Alaska Native Patients: 0 
  • Number of Patients with Race Not Elsewhere Classified: 0 
  • Number of Patients with Medicare Only Entitlement: 175 
  • Number of Patients with Medicare & Medicaid Entitlement: 65 
  Medicare Patient Condition Demographics
  • Percent of Patients with Atrial Fibrillation: 34% 
  • Percent of Patients with Alzheimer’s Disease or Dementia: 22% 
  • Percent of Patients with Asthma: 15% 
  • Percent of Patients with Cancer: 16% 
  • Percent of Patients with Heart Failure: 58% 
  • Percent of Patients with Chronic Kidney Disease: 75% 
  • Percent of Patients with Chronic Obstructive Pulmonary Disease: 42% 
  • Percent of Patients with Depression: 51% 
  • Percent of Patients with Diabetes: 54% 
  • Percent of Patients with Hyperlipidemia: 65% 
  • Percent of Patients with Hypertension (High Blood Pressure): 75% 
  • Percent of Patients with Ischemic Heart Disease: 65% 
  • Percent of Patients with Osteoporosis: 11% 
  • Percent of Patients with Rheumatoid Arthritis / Osteoarthritis: 43% 
  • Percent of Patients with Schizophrenia / Other Psychotic Disorders: 12% 
  • Percent of Patients with Stroke: 24% 
  Medicare Payments Data
  • Total Submitted Charge Amount: $301,580.00 
  • Total Medicare Allowed Amount: $119,483.65 
  • Total Medicare Payment Amount: $93,048.39 
  • Total Medicare Standardized Payment Amount: $94,373.76 
  • Total Medical Submitted Charge Amount: $301,580.00 
  • Total Medical Medicare Allowed Amount: $119,483.65 
  • Total Medical Medicare Payment Amount: $93,048.39 
  • Total Medical Medicare Standardized Payment Amount: $94,373.76 
  Medicare Prescription Drug Data
  • Drug Suppress Indicator: n/a 
  • Number of HCPCS Associated With Drug Services: 0 
  • Number of Drug Services: 0 
  • Number of Medicare Beneficiaries With Drug Services: 0 
  • Total Drug Submitted Charge Amount: $0.00 
  • Total Drug Medicare Allowed Amount: $0.00 
  • Total Drug Medicare Payment Amount: $0.00 
  • Total Drug Medicare Standardized Payment Amount: $0.00