DR. MARK CLAYTON STAHL (D.O.) – Allergy & Immunology Physician, NPI 1912932476
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
390 ALLERGY/IMMUNOLOGY in TX
Provider Addresses for DR. MARK CLAYTON STAHL (D.O.)
14615 SAN PEDRO AVE STE 250
SAN ANTONIO, TX 782324316
Phone: (210) 490-2051
Type: Mailing
10447, State Highway 151, Westover Hills, San Antonio, Bexar County, Texas, 78251, United States
SAN ANTONIO, TX 782514551
Phone: (210) 616-5385
Fax: (210) 647-1012
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 267 Open Payments records for all available years, with a total value of $11,447.
Total Amount is formed as General ($11,447) + Research ($0) + Ownership ($0) = $11,447.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: Regeneron Pharmaceuticals, Inc. ($3,798).
Total Amount
$11,447
General + Research + Ownership
Payments
267
Total payment records
General Amount
$11,447
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Regeneron Pharmaceuticals, Inc. | $3,798 |
| AstraZeneca Pharmaceuticals LP | $1,144 |
| GlaxoSmithKline, LLC. | $1,092 |
| Regeneron Healthcare Solutions, Inc. | $865 |
| CSL Behring | $665 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2014-08-01
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20140801000460 | I | Allergy/Immunology | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 95165 | Professional service for preparation and provision of 1 or more antigens | 2,022 | 52 | $0 |
| 95004 | Test for allergy using allergenic extract | 1,220 | 21 | $0 |
| 95117 | Professional service for multiple injections of allergen | 947 | 53 | $0 |
| J1100 | Injection, dexamethasone sodium phosphate, 1 mg | 126 | 14 | $0 |
| 94375 | Test to measure rate of airflow | 103 | 32 | $0 |
Insurance plans in this area (ZIP 78232)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| A L L E R G Y/ I M M U N O L O G Y | TX |
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