William Hiser, M.D.
NPI 1366481459 · Cardiovascular Disease Physician · Springfield, MA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Hiser, M.D. is a Cardiovascular Disease Physician provider in Springfield, MA (NPI 1366481459).
Provider details
- NPI number
- 1366481459
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 159655 (MA)
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
3,519 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 | 1,335 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 1,133 | $68 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 138 | $3 |
| Ultrasound of Heart, Follow-Up93308 | 135 | $24 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $95 |
| Ultrasound of Heart Blood Flow, Valves and Chambers, Follow-Up |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carvedilol | 224 | 62 |
| Atorvastatin Calcium | 163 | 48 |
| Lisinopril | 115 | 37 |
| Apixabanbrand: Eliquis | 109 | 19 |
| Amlodipine Besylate | 91 | 22 |
| Metoprolol Succinate | 81 | 23 |
| Empagliflozin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 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
- 2006-06-05
- Last updated
- 2018-01-19
Frequently asked questions
- What is William Hiser's NPI number?
- William Hiser's National Provider Identifier (NPI) is 1366481459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Hiser's specialty?
- William Hiser is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Hiser located?
- William Hiser's practice location on file with NPPES is 3300 Main St, Springfield, MA 01107-1112.
- What is William Hiser's phone number?
- The practice phone number listed in the NPPES registry for William Hiser is (413) 794-2273.
- Does William Hiser accept Medicare?
- William Hiser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Hiser's NPI active?
- Yes — William Hiser's NPI (1366481459) is active in the NPPES registry as of the last update on 2018-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.