Michael Ryan Klein, M.D.
Cardiovascular Disease Physician · Saint Louis, MO
Michael Ryan Klein, M.D. is a cardiovascular disease physician with a practice address in Saint Louis, Missouri, and NPI 1871756379, issued on Jul 3, 2008. Check the license (Missouri 2015011524, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Michael Ryan Klein
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 2015011524 MO
125054425 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3023 N Ballas RD Ste 200D, Saint Louis, MO 63131
- Phone
- (314) 996-7272
- Enumerated
- Jul 3, 2008
- Record last updated
- Mar 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (314) 996-6785
- Medicare enrollment
- Enrolled (PECOS I20150901000902); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 446 in Missouri → Look up another NPI →
Also registered at 3023 N Ballas RD Ste 200D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Cendrowski, MDInterventional Cardiology Physician1124481577
- Lori Effland, NPNurse Practitioner1245203272
- Daniel Fox, M.D.Cardiovascular Disease Physician1215387626
- Stuart Higano, M.D.Interventional Cardiology Physician1114998978
- Michael Jeffries, PA-CPhysician Assistant1083163570
- Terri Kolker, PA-CPhysician Assistant1043285638
Verify Michael Ryan Klein 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 2015011524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% more Medicare Part D claims than the average cardiovascular disease physician in 2024
5,816 Medicare Part D claims for 719 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Metoprolol Succinate771 claims
- Rosuvastatin Calcium711 claims
- Eliquis492 claims
- Losartan Potassium439 claims
- Atorvastatin Calcium384 claims
- Carvedilol342 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: $3,050.13
26 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Physician Groups LCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Ryan Klein among 446 cardiovascular disease physician records in Missouri
Michael Ryan Klein, M.D. is one of 446 cardiovascular disease physician records with a practice address in Missouri. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 71% of them.
- NPI issued2008 · 71% of these records are older, 25% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2008 · median 1998 among the 293 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Missouri
There are 446 cardiovascular disease physician records in Missouri.
All 446 in Missouri → Every provider in Saint Louis → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Daniel Fox, M.D.Saint Louis, MO 631311215387626
- Robert Lehman, M.D.Saint Louis, MO 631311063492189
- Mitchell PadkinsSaint Louis, MO 631311699270207
- James Smith, MDSaint Louis, MO 631311902079619
- Christopher Speidel, MDSaint Louis, MO 631311427037936
- Linda Stronach, MDSaint Louis, MO 631311144209867
- Daniel Wagner, MDSaint Louis, MO 631311942419452
- Bradley Witbrodt, M.D.Saint Louis, MO 631311275899718
Common questions
What is Michael Ryan Klein, M.D.'s NPI number?
Michael Ryan Klein, M.D.'s National Provider Identifier (NPI) is 1871756379, issued on Jul 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Michael Ryan Klein, M.D. located?
The NPPES record lists a practice address at 3023 N Ballas RD Ste 200D, Saint Louis, MO, 63131. Phone: (314) 996-7272. Providers update this record themselves, so call before visiting.
How can I verify Michael Ryan Klein, M.D.'s license?
NPPES lists Missouri license number 2015011524, 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 Michael Ryan Klein, M.D. prescribe under Medicare Part D?
In 2024, Michael Ryan Klein, M.D. had 5,816 Medicare Part D claims for 719 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.