Doctor profile · Federal record

Dr. Jonathan Hammond, MD

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (CMS: Cardiac Surgery) · Hartford, CT

  • NPI 1235115965
  • Accepts Medicare
  • MIPS 75.2 / 100 · 2023
  • 42 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
85 Seymour St, Suite 725
Hartford, CT 061065501
(860) 524-5905
fax (860) 522-3951

Credentials & registration

NPPES · NUCC
NPI registered
December 2005 — 21 yrs on file
Profile last updated
September 12, 2022
Year of graduation
1984 — 42 yrs since
Specialty taxonomy
208G00000X — NUCC code
State license (1)
Connecticut #027604
Medicaid
CT #001276048

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235115965. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
90
Distinct HCPCS
5
Medicare allowed
$65,594
HCPCS Description Services Patients Avg allowed
33508 Harvest of vein using an endoscope 23 23 $17
99205 New patient office or other outpatient visit, 60-74 minutes 21 21 $233
33533 Coronary artery bypass using artery graft, 1 graft 18 18 $1,516
33405 Replacement of aortic valve on heart-lung machine 16 16 $1,919
33517 Coronary artery bypass using vein or artery graft, 1 graft 12 12 $193

In context: peer comparison

Among 5 peers in this city , average services per provider: 22. This provider delivers 4.1× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$890
Transactions
7
Manufacturers
4
Payer (manufacturer) Industry Txns Amount
ATRICURE, INC. 4 $626.67
W. L. Gore & Associates, Inc. 1 $195.09
Endologix LLC 1 $47.64
LeMaitre Vascular, Inc. 1 $20.19

By nature of payment

Food and Beverage
$486
Travel and Lodging
$404

Frequently asked questions

Auto-generated from federal data
What is Dr. Jonathan Hammond's medical specialty?
Dr. Jonathan Hammond practices Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Hartford, CT.
Where does Dr. Jonathan Hammond practice?
Dr. Jonathan Hammond practices at 85 Seymour St, Hartford, CT 061065501. Office phone: 8605245905.
What is Dr. Jonathan Hammond's NPI?
Dr. Jonathan Hammond's National Provider Identifier (NPI) is 1235115965, issued by NPPES.
Does Dr. Jonathan Hammond accept Medicare assignment?
Yes. Dr. Jonathan Hammond accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonathan Hammond commonly perform?
Top Medicare-reported procedures in 2023: Harvest of vein using an endoscope (HCPCS 33508); New patient office or other outpatient visit (HCPCS 99205); Coronary artery bypass using artery graft, 1 graft (HCPCS 33533). Source: CMS Medicare Physician & Other Practitioners file.