Marilyn King, MD
NPI 1821087594 · Cardiovascular Disease Physician · Clearwater, FL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilyn King, MD is a Cardiovascular Disease Physician provider in Clearwater, FL (NPI 1821087594).
Provider details
- NPI number
- 1821087594
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- ME93190 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
5,122 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,004 | $124 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 687 | $14 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 356 | $8 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 343 | $77 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 306 | $184 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 575 | 186 |
| Metoprolol Succinate | 554 | 177 |
| Metoprolol Tartrate | 525 | 168 |
| Apixabanbrand: Eliquis | 411 | 104 |
| Amlodipine Besylate | 399 | 129 |
| Rosuvastatin Calcium | 356 | 116 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$102 across 6 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
- 2005-10-17
- Last updated
- 2016-10-05
Frequently asked questions
- What is Marilyn King's NPI number?
- Marilyn King's National Provider Identifier (NPI) is 1821087594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn King's specialty?
- Marilyn King is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Marilyn King located?
- Marilyn King's practice location on file with NPPES is 455 Pinellas St, Clearwater, FL 33756-3354.
- What is Marilyn King's phone number?
- The practice phone number listed in the NPPES registry for Marilyn King is (727) 445-1911.
- Does Marilyn King accept Medicare?
- Marilyn King is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilyn King's NPI active?
- Yes — Marilyn King's NPI (1821087594) is active in the NPPES registry as of the last update on 2016-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.