Michael Gavalas, MD
NPI 1548689821 · Cardiovascular Disease Physician · Stony Brook, NY
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Gavalas, MD is a Cardiovascular Disease Physician provider in Stony Brook, NY (NPI 1548689821).
Provider details
- NPI number
- 1548689821
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 304603 (NY)
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
12 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
2,084 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 Report93000 | 461 | $17 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 423 | $77 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 370 | $150 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 193 | $136 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 75 | $199 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 265 | 86 |
| Metoprolol Succinate | 245 | 70 |
| Amlodipine Besylate | 145 | 46 |
| Rosuvastatin Calcium | 121 | 41 |
| Losartan Potassium | 87 | 27 |
| Apixabanbrand: Eliquis | 86 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$250 across 10 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
- 2014-04-15
- Last updated
- 2020-06-08
- Certified
- 2020-06-08
Frequently asked questions
- What is Michael Gavalas's NPI number?
- Michael Gavalas's National Provider Identifier (NPI) is 1548689821, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Gavalas's specialty?
- Michael Gavalas is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Gavalas located?
- Michael Gavalas's practice location on file with NPPES is 101 Nicolls Rd, Stony Brook, NY 11794-3720.
- What is Michael Gavalas's phone number?
- The practice phone number listed in the NPPES registry for Michael Gavalas is (631) 444-0580.
- Does Michael Gavalas accept Medicare?
- Michael Gavalas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Gavalas's NPI active?
- Yes — Michael Gavalas's NPI (1548689821) is active in the NPPES registry as of the last update on 2020-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.