Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mark Krasnoff, MD

Individual provider Internal Medicine Physician · NPI 1821016064

Mark Krasnoff, MD practises Internal Medicine in Saint Louis, Missouri. Graduated from Johns Hopkins University School of Medicine in 1991, 35 years ago. Practices with SSM Medical Group Inc, a 560-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Missouri.

Years since qualifying
35
Trained at
Johns Hopkins University School of Medicine
Licensed in
MO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1035 Bellevue Ave Ste 400
Saint Louis, MO 63117-1854
Phone: (314) 925-4700
Fax: (314) 925-4750
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD114791 (MO)

Record details

NPI number1821016064
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESOctober 23, 2020
Certification dateOctober 23, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolJOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Ssm Medical Group Inc — 560 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients305
Services billed 968 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Mercy Hospital St Louis Hospital · Saint Louis, MO · listed as Mercy Hospitals East Communities Mercy Hospital St Louis
  • Ssm Health Saint Louis University Hospital Hospital · Saint Louis, MO · listed as Saint Louis University
  • St Lukes Hospital Hospital · Chesterfield, MO
  • Ssm Health St Mary'S Hospital - St Louis Hospital · Saint Louis, MO
  • Ssm St Clare Health Center Hospital · Fenton, MO
  • Amedisys Home Health Home health agency · O Fallon, IL
  • Centerwell Home Health Home health agency · Creve Coeur, MO
  • Elara Caring Home health agency · Bridgeton, MO
  • Ssm Health At Home Home Health-St. Louis Home health agency · Saint Louis, MO

Also affiliated with 1 inpatient rehabilitation facility, which CMS identifies by certification number only.

Colleagues at SSM Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 560 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis