Michael Siegenthaler, MD
NPI 1093863532 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Longview, TX
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Siegenthaler, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Longview, TX (NPI 1093863532).
Provider details
- NPI number
- 1093863532
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0068474 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
234 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 75 | $72 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 45 | $112 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 39 | $118 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $162 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 20 | $198 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,038 across 20 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (5)
- 263 Farmington AveFarmington, CT 06030-8063Phone: (860) 679-3343Fax: (860) 679-4256
- 8600 Old Georgetown RdBethesda, MD 20814-1422Phone: (301) 896-7610Fax: (301) 896-7626
- 30 W Mccreight Ave Ste 106Springfield, OH 45504-1853Phone: (937) 523-9825Fax: (937) 523-9829
- 707 E Marshall AveLongview, TX 75601-5545Phone: (903) 315-4880
- 2604 Saint Michael Dr Ste 425Texarkana, TX 75503-2378Phone: (903) 614-5600
Registry dates
- Enumerated
- 2007-01-08
- Last updated
- 2026-03-25
- Certified
- 2026-03-25
Frequently asked questions
- What is Michael Siegenthaler's NPI number?
- Michael Siegenthaler's National Provider Identifier (NPI) is 1093863532, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Siegenthaler's specialty?
- Michael Siegenthaler is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Siegenthaler located?
- Michael Siegenthaler's practice location on file with NPPES is 705 E Marshall Ave, Longview, TX 75601-5573.
- What is Michael Siegenthaler's phone number?
- The practice phone number listed in the NPPES registry for Michael Siegenthaler is (903) 315-2777.
- Does Michael Siegenthaler accept Medicare?
- Michael Siegenthaler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Siegenthaler's NPI active?
- Yes — Michael Siegenthaler's NPI (1093863532) is active in the NPPES registry as of the last update on 2026-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.