Ross Thormahlen, MD
NPI 1326213158 · Anesthesiology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ross Thormahlen, MD is a Anesthesiology Physician provider in San Antonio, TX (NPI 1326213158).
Provider details
- NPI number
- 1326213158
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2007-01955 (NC)
Specialties & taxonomies
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
404 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) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 269 | $129 |
| Injection of Anesthetic Agent And/Or Steroid Into Arm Nerve Bundle (brachial Plexus)64415 | 31 | $63 |
| Anesthesia for Placement Or Revision of Blood Flow Shunt01844 | 29 | $256 |
| Ultrasonic Guidance for Blood Vessel Access76937 | 29 | $13 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 21 | $42 |
| Injection of Anesthetic Agent And/Or Steroid Into Thigh Nerve (femoral Nerve)64447 | 13 | $44 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$47 across 1 record (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
Registry dates
- Enumerated
- 2008-04-23
- Last updated
- 2013-04-11
Frequently asked questions
- What is Ross Thormahlen's NPI number?
- Ross Thormahlen's National Provider Identifier (NPI) is 1326213158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ross Thormahlen's specialty?
- Ross Thormahlen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ross Thormahlen located?
- Ross Thormahlen's practice location on file with NPPES is 4242 Medical Dr, San Antonio, TX 78229-5640.
- What is Ross Thormahlen's phone number?
- The practice phone number listed in the NPPES registry for Ross Thormahlen is (210) 477-9555.
- Does Ross Thormahlen accept Medicare?
- Ross Thormahlen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ross Thormahlen's NPI active?
- Yes — Ross Thormahlen's NPI (1326213158) is active in the NPPES registry as of the last update on 2013-04-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.