Maryl Johnson, MD
NPI 1548236581 · Advanced Heart Failure and Transplant Cardiology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Advanced Heart Failure and Transplant Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maryl Johnson, MD is a Advanced Heart Failure and Transplant Cardiology Physician provider in Madison, WI (NPI 1548236581).
Provider details
- NPI number
- 1548236581
- Entity type
- Individual
- Primary specialty
- Advanced Heart Failure and Transplant Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 44716 (WI)
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
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
328 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 | 98 | $90 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 86 | $73 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 70 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 33 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sacubitril/Valsartanbrand: Entresto | 177 | 54 |
| Spironolactone | 170 | 47 |
| Metoprolol Succinate | 168 | 44 |
| Carvedilol | 135 | 44 |
| Furosemide | 104 | 35 |
| Amlodipine Besylate | 85 | 35 |
| Dapagliflozin Propanediolbrand: Farxiga | 82 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$203 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
- 2006-02-28
- Last updated
- 2021-01-15
- Certified
- 2021-01-15
Frequently asked questions
- What is Maryl Johnson's NPI number?
- Maryl Johnson's National Provider Identifier (NPI) is 1548236581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryl Johnson's specialty?
- Maryl Johnson is listed in the NPPES registry with a primary specialty of Advanced Heart Failure and Transplant Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Maryl Johnson located?
- Maryl Johnson's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792.
- What is Maryl Johnson's phone number?
- The practice phone number listed in the NPPES registry for Maryl Johnson is (608) 263-1530.
- Does Maryl Johnson accept Medicare?
- Maryl Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maryl Johnson's NPI active?
- Yes — Maryl Johnson's NPI (1548236581) is active in the NPPES registry as of the last update on 2021-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.