Mark Fiengo, DO
NPI 1245214220 · Cardiovascular Disease Physician · Waterford, CT
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Fiengo, DO is a Cardiovascular Disease Physician provider in Waterford, CT (NPI 1245214220).
Provider details
- NPI number
- 1245214220
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 00281 (CT)
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 tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
715 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 317 | $139 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 226 | $16 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 62 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 52 | $71 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 37 | $196 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 37 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 467 | 130 |
| Metoprolol Succinate | 392 | 128 |
| Atorvastatin Calcium | 307 | 105 |
| Lisinopril | 159 | 50 |
| Metoprolol Tartrate | 152 | 54 |
| Furosemide | 141 | 44 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-02
- Last updated
- 2020-03-10
- Certified
- 2020-03-10
Frequently asked questions
- What is Mark Fiengo's NPI number?
- Mark Fiengo's National Provider Identifier (NPI) is 1245214220, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Fiengo's specialty?
- Mark Fiengo is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Fiengo located?
- Mark Fiengo's practice location on file with NPPES is 196 Parkway S, Waterford, CT 06385-1234.
- What is Mark Fiengo's phone number?
- The practice phone number listed in the NPPES registry for Mark Fiengo is (860) 443-4383.
- Does Mark Fiengo accept Medicare?
- Mark Fiengo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Fiengo's NPI active?
- Yes — Mark Fiengo's NPI (1245214220) is active in the NPPES registry as of the last update on 2020-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.