Mark N. Fiengo, DO
Cardiovascular Disease Physician · Waterford, CT
Mark N. Fiengo, DO is a cardiovascular disease physician with a practice address in Waterford, Connecticut, and NPI 1245214220, issued on Dec 2, 2005. Check the license (Connecticut 000281, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark N. Fiengo
- Credential
- DO
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 000281 CT
00281 CT
Self-reported in NPPES; status is on the state search - Practice location
- 196 Parkway S, Waterford, CT 06385
- Phone
- (860) 443-4383
- Enumerated
- Dec 2, 2005
- Record last updated
- Mar 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (860) 443-3980
- Medicaid ID
- 001002815 CT
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 503 in Connecticut → Look up another NPI →
Also registered at 196 Parkway S
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark N. Fiengo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 000281Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average cardiovascular disease physician in 2024
3,348 Medicare Part D claims for 581 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Eliquis467 claims
- Metoprolol Succinate392 claims
- Atorvastatin Calcium307 claims
- Lisinopril159 claims
- Metoprolol Tartrate152 claims
- Furosemide141 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mark N. Fiengo among 503 cardiovascular disease physician records in Connecticut
Mark N. Fiengo, DO is one of 503 cardiovascular disease physician records with a practice address in Connecticut. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 77% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2020 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 cardiovascular disease physician records list a practice address in Waterford
They are 10 of the 315 NPPES records with a practice address in Waterford, and 503 cardiovascular disease physician records in Connecticut.
All 503 in Connecticut → Every provider in Waterford → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- David Brill, M.D.Waterford, CT 063851437146404
- Brian Ehrlich, M.D.Waterford, CT 063851659329688
- Jon Gaudio, M.D.Waterford, CT 063851205885258
- Damianos Kokkinidis, M.DWaterford, CT 063851477084838
- Peter Milstein, M.D.Waterford, CT 063851366482556
- Valerie Popkin, M.D.Waterford, CT 063851275575409
- Meghana Rao Brito, M.D.Waterford, CT 063851194085076
- Kamila Somayaji, MDWaterford, CT 063851023514460
Common questions
What is Mark N. Fiengo, DO's NPI number?
Mark N. Fiengo, DO's National Provider Identifier (NPI) is 1245214220, issued on Dec 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark N. Fiengo, DO located?
The NPPES record lists a practice address at 196 Parkway S, Waterford, CT, 06385. Phone: (860) 443-4383. Providers update this record themselves, so call before visiting.
How can I verify Mark N. Fiengo, DO's license?
NPPES lists Connecticut license number 000281, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark N. Fiengo, DO prescribe under Medicare Part D?
In 2024, Mark N. Fiengo, DO had 3,348 Medicare Part D claims for 581 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Mark N. Fiengo, DO's MIPS final score?
The 2023 MIPS final score is 84.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.