William Harder, D.O.
NPI 1225417660 · Cardiovascular Disease Physician · Waterford, MI
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Harder, D.O. is a Cardiovascular Disease Physician provider in Waterford, MI (NPI 1225417660).
Provider details
- NPI number
- 1225417660
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5101021792 (MI)
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
11 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
2,051 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 689 | $79 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 458 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 139 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 137 | $91 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 129 | $14 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function |
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 |
|---|---|---|
| Apixabanbrand: Eliquis | 226 | 57 |
| Atorvastatin Calcium | 203 | 69 |
| Metoprolol Succinate | 168 | 57 |
| Losartan Potassium | 134 | 41 |
| Carvedilol | 129 | 36 |
| Furosemide | 119 | 46 |
| Amlodipine Besylate | 97 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,203 across 88 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
- 2015-05-19
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is William Harder's NPI number?
- William Harder's National Provider Identifier (NPI) is 1225417660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Harder's specialty?
- William Harder is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Harder located?
- William Harder's practice location on file with NPPES is 6889 Highland Rd, Waterford, MI 48327-1658.
- What is William Harder's phone number?
- The practice phone number listed in the NPPES registry for William Harder is (248) 666-5200.
- Does William Harder accept Medicare?
- William Harder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Harder's NPI active?
- Yes — William Harder's NPI (1225417660) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.