Doctor profile · Federal record
Dr. Charles Calais, D.O
Allergy & Immunology (Internal Medicine) Physician (CMS: Allergy/Immunology) · Allergy & Immunology (Internal Medicine) Physician · San Antonio, TX
- NPI 1831416197
- Accepts Medicare
- 16 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
1219 McCullough Ave
San Antonio, TX 782124811
(210) 226-3500
fax (210) 226-3638
Credentials & registration
- NPI registered
- April 2010 — 16 yrs on file
- Profile last updated
- January 20, 2025
- Year of graduation
- 2010 — 16 yrs since
- Specialty taxonomy
- 207RA0201X — NUCC code
- State licenses (2)
- Texas #R8534 · Virginia #0102203064
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1831416197. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,616
Distinct HCPCS
10
Medicare allowed
$66,238
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
95004 |
Test for allergy using allergenic extract | 1,665 | 23 | $4 | |
95165 |
Professional service for preparation and provision of 1 or more antigens | 1,113 | 26 | $14 | |
95115 |
Professional service for single injection of allergen | 291 | 24 | $9 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 181 | 71 | $170 | |
95117 |
Professional service for multiple injections of allergen | 162 | 15 | $11 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 95 | 33 | $37 | |
89190 |
Nasal smear for eosinophils (allergy related white blood cells) | 39 | 28 | $6 | |
94664 |
Evaluation of use of breathing device | 35 | 22 | $16 | |
69210 |
Removal of impacted ear wax | 18 | 14 | $46 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 17 | 17 | $210 |
In context: peer comparison
Among 1 peers in San Antonio Allergy & Immunology (Internal Medicine) Physician, average services per provider: 361. This provider delivers 10× the peer median.Open Payments
Industry payments received
All-time total
$1,893
Transactions
55
Manufacturers
12
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| AstraZeneca Pharmaceuticals Lp | 10 | $433.13 | |
| GlaxoSmithKline, LLC. | 13 | $432.32 | |
| Sanofi-Aventis U.S. LLC | 10 | $241.84 | |
| Genentech USA, INC. | 5 | $140.80 | |
| Novartis Pharmaceuticals Corporation | 2 | $140.40 | |
| Grifols USA, LLC | 3 | $135.87 | |
| Takeda Pharmaceuticals U.S.A., INC. | 5 | $120.60 | |
| Genzyme Corporation | 1 | $116.71 | |
| Optinose US, INC. | 3 | $60.63 | |
| Csl Behring | 1 | $27.10 | |
| Amgen INC. | 1 | $23.93 | |
| Octapharma USA, INC. | 1 | $20.00 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
545
Patients
276
Total drug cost
$262,208
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 72 | 49 | $115 |
| Hydroxyzine Hcl | Generic | 70 | 29 | $566 |
| Azelastine Hcl | Generic | 50 | 37 | $1,822 |
| Xolair (Omalizumab) | Brand | 48 | 0 | $147,819 |
| Epinephrine | Generic | 45 | 40 | $9,891 |
| Azithromycin | Generic | 40 | 32 | $227 |
| Triamcinolone Acetonide | Generic | 38 | 20 | $511 |
| Fluticasone Propionate | Generic | 32 | 12 | $413 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 28 | 16 | $984 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 27 | 24 | $245 |
Frequently asked questions
What is Dr. Charles Calais's medical specialty?
Dr. Charles Calais practices Allergy & Immunology (Internal Medicine) Physician in San Antonio, TX.
Where does Dr. Charles Calais practice?
Dr. Charles Calais practices at 1219 McCullough Ave, San Antonio, TX 782124811. Office phone: 2102263500.
What is Dr. Charles Calais's NPI?
Dr. Charles Calais's National Provider Identifier (NPI) is 1831416197, issued by NPPES.
Does Dr. Charles Calais accept Medicare assignment?
Yes. Dr. Charles Calais accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Charles Calais commonly perform?
Top Medicare-reported procedures in 2023: Test for allergy using allergenic extract (HCPCS 95004); Professional service for preparation and provision of 1 or more antigens (HCPCS 95165); Professional service for single injection of allergen (HCPCS 95115). Source: CMS Medicare Physician & Other Practitioners file.