Michael Klein, M.D.
NPI 1871756379 · Cardiovascular Disease Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Klein, M.D. is a Cardiovascular Disease Physician provider in Saint Louis, MO (NPI 1871756379).
Provider details
- NPI number
- 1871756379
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 125054425 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,453 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 438 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 375 | $123 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 170 | $3 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 145 | $20 |
| Ultrasound of Heart Blood Flow, Valves and Chambers93320 | 137 | $17 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 771 | 236 |
| Rosuvastatin Calcium | 711 | 220 |
| Apixabanbrand: Eliquis | 492 | 115 |
| Losartan Potassium | 439 | 142 |
| Atorvastatin Calcium | 384 | 115 |
| Carvedilol | 342 | 108 |
| Furosemide | 329 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,050 across 26 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-03
- Last updated
- 2021-03-12
- Certified
- 2021-03-12
Frequently asked questions
- What is Michael Klein's NPI number?
- Michael Klein's National Provider Identifier (NPI) is 1871756379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Klein's specialty?
- Michael Klein is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Klein located?
- Michael Klein's practice location on file with NPPES is 3023 N Ballas Rd Ste 200d, Saint Louis, MO 63131-2328.
- What is Michael Klein's phone number?
- The practice phone number listed in the NPPES registry for Michael Klein is (314) 996-7272.
- Does Michael Klein accept Medicare?
- Michael Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Klein's NPI active?
- Yes — Michael Klein's NPI (1871756379) is active in the NPPES registry as of the last update on 2021-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.