Stephen Fleet, M.D.
NPI 1588764948 · Cardiovascular Disease Physician · Greenfield, MA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Fleet, M.D. is a Cardiovascular Disease Physician provider in Greenfield, MA (NPI 1588764948).
Provider details
- NPI number
- 1588764948
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20714 (NH)
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
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
2,387 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 | 881 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 392 | $14 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 387 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 207 | $129 |
| Technetium Tc-99m Sestamibi, Diagnostic, Per Study DoseA9500 | 155 | $125 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 117 | 44 |
| Apixabanbrand: Eliquis | 70 | 21 |
| Metoprolol Tartrate | 67 | 25 |
| Losartan Potassium | 38 | 13 |
| Carvedilol | 26 | — |
| Furosemide | 26 | — |
| Diltiazem Hclbrand: Diltiazem 24hr Er (cd) | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$78 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
- 2006-09-25
- Last updated
- 2023-01-18
- Certified
- 2023-01-18
Frequently asked questions
- What is Stephen Fleet's NPI number?
- Stephen Fleet's National Provider Identifier (NPI) is 1588764948, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Fleet's specialty?
- Stephen Fleet is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Fleet located?
- Stephen Fleet's practice location on file with NPPES is 164 High St, Greenfield, MA 01301-2613.
- What is Stephen Fleet's phone number?
- The practice phone number listed in the NPPES registry for Stephen Fleet is (413) 794-2273.
- Does Stephen Fleet accept Medicare?
- Stephen Fleet is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Fleet's NPI active?
- Yes — Stephen Fleet's NPI (1588764948) is active in the NPPES registry as of the last update on 2023-01-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.