Jonathan Siegfried, MD
Cardiovascular Disease Physician · New Haven, CT
Jonathan Siegfried, MD is a cardiovascular disease physician with a practice address in New Haven, Connecticut, and NPI 1720251549, issued on Apr 12, 2008. Check the license (Connecticut 54031, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan Siegfried
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 54031 CT
254548 NY
Self-reported in NPPES; status is on the state search - Practice location
- 46 Prince St Ste 500, New Haven, CT 06519
- Phone
- (203) 867-5300
- Enumerated
- Apr 12, 2008
- Record last updated
- Sep 30, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150527001597); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2008
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 503 in Connecticut → Look up another NPI →
Verify Jonathan Siegfried in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 54031Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
857 Medicare Part D claims for 239 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Carvedilol91 claims
- Atorvastatin Calcium87 claims
- Losartan Potassium80 claims
- Metoprolol Succinate63 claims
- Rosuvastatin Calcium54 claims
- Eliquis52 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).
Industry payments in 2024: $87.75
4 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Hartford Healthcare Medical Group Specialists PLLCStorrs, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Siegfried among 503 cardiovascular disease physician records in Connecticut
Jonathan Siegfried, MD 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 2008, is newer than 64% of them.
- NPI issued2008 · 64% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2008 · median 2000 among the 348 with a school on file
- 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).
96 cardiovascular disease physician records list a practice address in New Haven
They are 96 of the 9,793 NPPES records with a practice address in New Haven, and 503 cardiovascular disease physician records in Connecticut.
All 503 in Connecticut → Every provider in New Haven → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- William Batsford, MDNew Haven, CT 065191205824257
- Jeffrey Bender, MDNew Haven, CT 065191417947987
- John ChandlerNew Haven, CT 065191740262419
- Lawrence Cohen, MDNew Haven, CT 065191235127390
- Samuel Hahn, MDNew Haven, CT 065191821079120
- Ajoy Kapoor, M.D.New Haven, CT 065191265414395
- Rachel Lampert, MDNew Haven, CT 065191558359752
- Forrester Lee, MDNew Haven, CT 065191447248521
Common questions
What is Jonathan Siegfried, MD's NPI number?
Jonathan Siegfried, MD's National Provider Identifier (NPI) is 1720251549, issued on Apr 12, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Siegfried, MD located?
The NPPES record lists a practice address at 46 Prince St Ste 500, New Haven, CT, 06519. Phone: (203) 867-5300. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Siegfried, MD's license?
NPPES lists Connecticut license number 54031, 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 Jonathan Siegfried, MD prescribe under Medicare Part D?
In 2024, Jonathan Siegfried, MD had 857 Medicare Part D claims for 239 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
What is Jonathan Siegfried, MD'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.