Juan Diaz, M.D.
NPI 1780793737 · Interventional Cardiology Physician · Fond Du Lac, WI
Enrolled with Medicare as Practitioner - Interventional Cardiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Juan Diaz, M.D. is a Interventional Cardiology Physician provider in Fond Du Lac, WI (NPI 1780793737).
Provider details
- NPI number
- 1780793737
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 41345 (WI)
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
19 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
2,189 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 836 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 211 | $64 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 189 | $90 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System, Remote Up to 90 Days93294 | 181 | $27 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 104 | $11 |
| Programming of Dual Lead Pacemaker System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 490 | 174 |
| Metoprolol Succinate | 388 | 137 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 367 | 151 |
| Rosuvastatin Calcium | 337 | 118 |
| Losartan Potassium | 321 | 111 |
| Lisinopril | 227 | 72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$101 across 5 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
- 2006-08-30
- Last updated
- 2020-12-23
- Certified
- 2020-12-23
Frequently asked questions
- What is Juan Diaz's NPI number?
- Juan Diaz's National Provider Identifier (NPI) is 1780793737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Juan Diaz's specialty?
- Juan Diaz is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Juan Diaz located?
- Juan Diaz's practice location on file with NPPES is 420 E Division St, Fond Du Lac, WI 54935-4560.
- What is Juan Diaz's phone number?
- The practice phone number listed in the NPPES registry for Juan Diaz is (920) 926-8230.
- Does Juan Diaz accept Medicare?
- Juan Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Juan Diaz's NPI active?
- Yes — Juan Diaz's NPI (1780793737) is active in the NPPES registry as of the last update on 2020-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.