Jonathan A. Hammond, MD
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Hartford, CT
Jonathan A. Hammond, MD is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Hartford, Connecticut, and NPI 1235115965, issued on Dec 15, 2005. Check the license (Connecticut 027604, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan A. Hammond
- Credential
- MD
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- 027604 CT
Self-reported in NPPES; status is on the state search - Practice location
- 85 Seymour St, Hartford, CT 06106
- Phone
- (860) 524-5905
- Enumerated
- Dec 15, 2005
- Record last updated
- Sep 12, 2022
- Fax
- (860) 522-3951
- Medicaid ID
- 001276048 CT
- Medicare enrollment
- Enrolled (PECOS I20101007001154); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1984
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 79 in Connecticut → Look up another NPI →
Also registered at 85 Seymour St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aderonke Adeniji, M.D.Internal Medicine Physician1649552159
- Philip AllmendingerVascular Surgery Physician1861492241
- James Alvarez, PHYSICIAN ASSISTANTPhysician Assistant1407853575
- Joseph Anquillare, M.D.Geriatric Medicine (Internal Medicine) Physician1316043045
- Samuel Anyatonwu, MDInternal Medicine Physician1023028933
- Alan Armstrong, P.A.Physician Assistant1790761898
Verify Jonathan A. Hammond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 027604Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 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: $889.59
7 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 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 2 group practices
- Hartford Healthcare Medical Group Specialists PLLCHartford, CT
- University OF Connecticut Health CenterFarmington, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan A. Hammond among 79 thoracic surgery (cardiothoracic vascular surgery) physician records in Connecticut
Jonathan A. Hammond, MD is one of 79 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Connecticut. 73% 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, 81% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1984 · median 1998 among the 48 with a school on file
- Record last updated2022 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Connecticut
There are 79 thoracic surgery (cardiothoracic vascular surgery) physician records in Connecticut.
All 79 in Connecticut → Every provider in Hartford → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Ayyaz Ali, MDHartford, CT 061061023301835
- Whitney Burrows, M.D.Hartford, CT 061061205840444
- Sabet Hashim, MDHartford, CT 061061497719579
- Chester Humphrey, MDHartford, CT 061061891871448
- Robert Lowe, MDHartford, CT 061061447243951
- Dennis Mello, MDHartford, CT 061061962477497
- Sheelagh Pousatis, M.D.Hartford, CT 061061205214624
- Paul Preissler, MDHartford, CT 061061285631630
Common questions
What is Jonathan A. Hammond, MD's NPI number?
Jonathan A. Hammond, MD's National Provider Identifier (NPI) is 1235115965, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan A. Hammond, MD located?
The NPPES record lists a practice address at 85 Seymour St, Hartford, CT, 06106. Phone: (860) 524-5905. Providers update this record themselves, so call before visiting.
How can I verify Jonathan A. Hammond, MD's license?
NPPES lists Connecticut license number 027604, 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.
What is Jonathan A. Hammond, MD's MIPS final score?
The 2023 MIPS final score is 79.3 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.