Max Klein, MD
NPI 1861954836 · Cardiovascular Disease Physician · Largo, FL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Max Klein, MD is a Cardiovascular Disease Physician provider in Largo, FL (NPI 1861954836).
Provider details
- NPI number
- 1861954836
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- ME171502 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 56 | 17 |
| Apixabanbrand: Eliquis | 49 | 13 |
| Rivaroxabanbrand: Xarelto | 38 | — |
| Rosuvastatin Calcium | 34 | 11 |
| Metoprolol Tartrate | 33 | 13 |
| Amlodipine Besylate | 30 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$44 across 1 record (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
- 2019-04-01
- Last updated
- 2025-10-15
- Certified
- 2025-10-15
Frequently asked questions
- What is Max Klein's NPI number?
- Max Klein's National Provider Identifier (NPI) is 1861954836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Max Klein's specialty?
- Max Klein is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Max Klein located?
- Max Klein's practice location on file with NPPES is 8787 Bryan Dairy Rd Ste 320, Largo, FL 33777-1256.
- What is Max Klein's phone number?
- The practice phone number listed in the NPPES registry for Max Klein is (727) 724-8611.
- Does Max Klein accept Medicare?
- Max Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Max Klein's NPI active?
- Yes — Max Klein's NPI (1861954836) is active in the NPPES registry as of the last update on 2025-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.