Mark Felger, M.D.
NPI 1770507030 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Austin, TX
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Felger, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Austin, TX (NPI 1770507030).
Provider details
- NPI number
- 1770507030
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- H9209 (TX)
Specialties & taxonomies
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
191 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) |
|---|---|---|
| Exclusion of Appendage of Left Upper Chamber of Heart Performed During Other Procedure on Chest33268 | 32 | $124 |
| Harvest of Vein Using an Endoscope33508 | 30 | $15 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 29 | $1,546 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 24 | $725 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 24 | $197 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,398 across 29 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 (1)
- 302 University BlvdRound Rock, TX 78665-1032Phone: (512) 509-0200
Registry dates
- Enumerated
- 2006-07-27
- Last updated
- 2024-07-01
- Certified
- 2024-07-01
Frequently asked questions
- What is Mark Felger's NPI number?
- Mark Felger's National Provider Identifier (NPI) is 1770507030, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Felger's specialty?
- Mark Felger is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Felger located?
- Mark Felger's practice location on file with NPPES is 1010 W 40th St, Austin, TX 78756-4010.
- What is Mark Felger's phone number?
- The practice phone number listed in the NPPES registry for Mark Felger is (512) 459-8753.
- Does Mark Felger accept Medicare?
- Mark Felger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Felger's NPI active?
- Yes — Mark Felger's NPI (1770507030) is active in the NPPES registry as of the last update on 2024-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.