Doctor profile · Federal record
Dr. Maria Theresa Castillo, PA
Medical Physician Assistant (CMS: Physician Assistant) · San Antonio, TX
- NPI 1093792616
- Accepts Medicare
- 22 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
621 Camden St Ste 202
San Antonio, TX 782151644
(210) 253-3426
fax (210) 477-1808 - Mailing address
-
621 Camden St
San Antonio, TX 78215
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- March 4, 2010
- Year of graduation
- 2004 — 22 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State license (1)
- Texas #PA04462
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1093792616. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
197
Distinct HCPCS
2
Medicare allowed
$14,796
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 180 | 154 | $73 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 15 | $98 |
In context: peer comparison
Among 36 peers in this city , average services per provider: 121. This provider delivers 1.6× the peer median.Open Payments
Industry payments received
All-time total
$710
Transactions
23
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Ipsen Biopharmaceuticals, Inc | 8 | $272.60 | |
| Madrigal Pharmaceuticals | 6 | $174.42 | |
| Intercept Pharmaceuticals, Inc. | 1 | $112.32 | |
| Gilead Sciences, Inc. | 5 | $93.30 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 2 | $42.47 | |
| ORPHALAN INC | 1 | $14.96 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
185
Patients
20
Total drug cost
$117,276
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ursodiol | Generic | 71 | 20 | $17,924 |
| Azathioprine | Generic | 38 | 0 | $2,335 |
| Xifaxan (Rifaximin) | Brand | 28 | 0 | $94,646 |
| Furosemide | Generic | 17 | 0 | $99 |
| Constulose (Lactulose) | Brand | 16 | 0 | $379 |
| Lactulose | Generic | 15 | 0 | $1,893 |
Frequently asked questions
What is Dr. Maria Theresa Castillo's medical specialty?
Dr. Maria Theresa Castillo practices Medical Physician Assistant in San Antonio, TX.
Where does Dr. Maria Theresa Castillo practice?
Dr. Maria Theresa Castillo practices at 621 Camden St Ste 202, San Antonio, TX 782151644. Office phone: 2102533426.
What is Dr. Maria Theresa Castillo's NPI?
Dr. Maria Theresa Castillo's National Provider Identifier (NPI) is 1093792616, issued by NPPES.
Does Dr. Maria Theresa Castillo accept Medicare assignment?
Yes. Dr. Maria Theresa Castillo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Maria Theresa Castillo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.