Michael P Siegenthaler, MD
Thoracic Surgery (CMS) · Farmington, CT
At a glance
263 Farmington Ave, Farmington, CT 06030-8063
Published activity: Coronary artery bypass graft (CABG) · Leg revascularization (restoring blood flow) · Pacemaker insertion or repair. View counts and coverage
NPPES record updated Sep 16, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
263 Farmington AveFarmington, CT 06030-8063
Additional reported practice locations
707 E Marshall AveLongview, TX 756015545
Phone: 9033154880 2604 Saint Michael Dr Ste 425
Texarkana, TX 755032378
Phone: 9036145600 705 E Marshall Ave
Longview, TX 756015573
Phone: 9033152777 30 W Mccreight Ave Ste 106
Springfield, OH 455041853
Phone: 9375239825
Fax: 9375239829 8600 Old Georgetown Rd
Bethesda, MD 208141422
Phone: 3018967610
Fax: 3018967626
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1991
- CMS specialties
- Thoracic Surgery
Practice groups
- Christus Trinity Clinic Texas
- Mercy Health Physicians Springfield Specialty Care Llc
- Monument Health Rapid City Hospital Inc
- University Of Connecticut Health Center
Reported hospital affiliations
- John Dempsey Hospital Of The University Of Connect Farmington, CT
- Monument Health Rapid City Hospital Rapid City, SD
- Springfield Regional Medical Center Springfield, OH
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Coronary artery bypass graft (CABG) | 16 |
| Leg revascularization (restoring blood flow) | 1-10 |
| Pacemaker insertion or repair | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $789.68 |
Reporting companies
| Company | Amount |
|---|---|
| ABIOMED | $285.96 |
| ATRICURE, INC. | $246.85 |
| MEDTRONIC, INC. | $197.94 |
| HAEMONETICS CORPORATION | $41.48 |
| BOLTON MEDICAL INC | $17.45 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Thoracic Surgery (CMS)
- Taxonomy code
- 208G00000X
- Enumeration date
- Jan 8, 2007
- Record updated
- Sep 16, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
208G00000X
License reported: D0068474 MD
208G00000X · Primary
License reported: 036842 CT
208600000X
License reported: L2653 TX
208G00000X
License reported: L2653 TX
208G00000X
License reported: MD430302 PA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
263 Farmington AveFarmington, CT 06030-8063
- Phone
- (860) 679-3343
- Fax
- (860) 679-4256
Mailing address
263 FARMINGTON AVEFARMINGTON, CT 060308082
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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