Mark Stahl, D.O.
NPI 1912932476 · Allergy & Immunology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Stahl, D.O. is a Allergy & Immunology Physician provider in San Antonio, TX (NPI 1912932476).
Provider details
- NPI number
- 1912932476
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 34.010391 (OH)
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
19 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
4,203 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 1,700 | $14 |
| Test for Allergy Using Allergenic Extract95004 | 1,040 | $3 |
| Professional Service for Multiple Injections of Allergen95117 | 832 | $11 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 309 | $66 |
| Test to Measure Rate of Airflow94375 | 124 | $37 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $118 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 87 | 33 |
| Montelukast Sodium | 61 | 14 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 53 | 27 |
| Fluticasone Propionate | 50 | 19 |
| Prednisone | 42 | 32 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 28 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,768 across 148 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
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2021-04-29
- Certified
- 2021-04-29
Frequently asked questions
- What is Mark Stahl's NPI number?
- Mark Stahl's National Provider Identifier (NPI) is 1912932476, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Stahl's specialty?
- Mark Stahl is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Stahl located?
- Mark Stahl's practice location on file with NPPES is 14615 San Pedro Ave Ste 250, San Antonio, TX 78232-4316.
- What is Mark Stahl's phone number?
- The practice phone number listed in the NPPES registry for Mark Stahl is (210) 490-2051.
- Does Mark Stahl accept Medicare?
- Mark Stahl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Stahl's NPI active?
- Yes — Mark Stahl's NPI (1912932476) is active in the NPPES registry as of the last update on 2021-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.