Mark Krasnoff, M.D.
Internal Medicine Physician · Saint Louis, MO
Mark Krasnoff, M.D. is an internal medicine physician with a practice address in Saint Louis, Missouri, and NPI 1821016064, issued on Jul 17, 2006. Check the license (Missouri MD114791, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Mark Krasnoff
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD114791 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1035 Bellevue Ave, Saint Louis, MO 63117
- Phone
- (314) 925-4700
- Enumerated
- Jul 17, 2006
- Record last updated
- Oct 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (314) 925-4750
- Medicaid ID
- 209978915 MO
- Medicare enrollment
- Enrolled (PECOS I20080421000487); accepts Medicare assignment
- Medical or professional school
- Johns Hopkins University School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 1035 Bellevue Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Armstrong, ACNP-BCAcute Care Nurse Practitioner1659670552
- Marci BenedictPharmacist1275212235
- Bruce Brown, MDSurgery Physician1699712323
- Judith Dietzler, RPHPharmacist1003899956
- Harold Dunn, M.D.Plastic Surgery Physician1326170176
- John Durbin, M.D.Internal Medicine Physician1497983787
Verify Mark Krasnoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license MD114791Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average internal medicine physician in 2024
11,693 Medicare Part D claims for 897 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 401 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium532 claims
- Amlodipine Besylate508 claims
- Atorvastatin Calcium481 claims
- Levothyroxine Sodium333 claims
- Losartan Potassium326 claims
- Metoprolol Succinate309 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.
Bills Medicare through one group practice
- Ssm Medical Group IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Krasnoff among 2,604 internal medicine physician records in Missouri
Mark Krasnoff, M.D. is one of 2,604 internal medicine 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 55% of these records are
- Graduated1991 · median 2006 among the 1,443 with a school on file
- Record last updated2020 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
941 internal medicine physician records list a practice address in Saint Louis
They are 941 of the 27,605 NPPES records with a practice address in Saint Louis, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Saint Louis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Abbott, MDRichmond Heights, MO 631171568448850
- Monika Aplyn, M.D.Saint Louis, MO 631171336195247
- Kathleen Brunts, M.D.Saint Louis, MO 631171851382204
- Danita Cole, MDSaint Louis, MO 631171639152374
- Mohammad Emami, MDSaint Louis, MO 631171598712671
- Snehal Gandhi, M.D.Saint Louis, MO 631171184608689
- William Guyol, MDSaint Louis, MO 631171396738019
- Alka Kapoor, MDSaint Louis, MO 631171639122633
Common questions
What is Mark Krasnoff, M.D.'s NPI number?
Mark Krasnoff, M.D.'s National Provider Identifier (NPI) is 1821016064, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Krasnoff, M.D. located?
The NPPES record lists a practice address at 1035 Bellevue Ave, Saint Louis, MO, 63117. Phone: (314) 925-4700. Providers update this record themselves, so call before visiting.
How can I verify Mark Krasnoff, M.D.'s license?
NPPES lists Missouri license number MD114791, 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 Mark Krasnoff, M.D. prescribe under Medicare Part D?
In 2024, Mark Krasnoff, M.D. had 11,693 Medicare Part D claims for 897 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.