Raul Sergio Villarreal Jr, MD is a medicare enrolled "Allergy & Immunology" physician in Live Oak, Texas. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 2015 and has 10 years of diverse experience with area of expertise as Allergy/immunology. He is a member of the group practice Allergy Asthma And Immunology Associates Of South Texas, P.a. and his current practice location is
11515 Toepperwein Rd Ste 201, Live Oak, Texas. You can reach out to his office (for appointments etc.) via phone at
(210) 646-6978.
Raul Sergio Villarreal Jr is licensed to practice in Texas (license number S4411) and he also participates in the medicare program. He
accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1083008908.
Physician's Profile
| Full Name | Raul Sergio Villarreal Jr |
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| Gender | Male |
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| Speciality | Allergy/immunology |
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| Experience | 10 Years |
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| Location | 11515 Toepperwein Rd Ste 201, Live Oak, Texas |
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| Accepts Medicare Assignments | Yes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance. |
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Medical Education and Training:
- Raul Sergio Villarreal Jr attended and graduated from University Of Texas Southwestern Medical School At Dallas in 2015
NPI Data:
- NPI Number: 1083008908
- Provider Enumeration Date: 03/28/2015
- Last Update Date: 09/18/2025
Medicare PECOS Information:
- PECOS PAC ID: 0941582209
- Enrollment ID: I20200507000282
Medical Identifiers
Medical identifiers for Raul Sergio Villarreal Jr such as npi, medicare ID, medicare PIN, medicaid, etc.
| Identifier | Type | State | Issuer |
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| 1083008908 | NPI | - | NPPES |
Medical Taxonomies and Licenses
| Taxonomy | Type | License (State) | Status |
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| 207RA0201X | Internal Medicine - Allergy & Immunology | S4411 (Texas) | Secondary |
| 207K00000X | Allergy & Immunology | S4411 (Texas) | Primary |
Group Practice Association
| Group Practice Name | Group PECOS PAC ID | No. of Members |
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| Allergy Asthma And Immunology Associates Of South Texas, P.a. | 3274596853 | 6 |
Medicare Reassignments
Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Raul Sergio Villarreal Jr allows following entities to bill medicare on his behalf.
| Entity Name | Allergy Asthma & Immunology Associates Of South Texas, P.a. |
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| Entity Type | Part B Supplier - Clinic/group Practice |
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| Entity Identifiers | NPI Number: 1023175239
PECOS PAC ID: 3274596853
Enrollment ID: O20041104000908 |
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Medicare Part D Prescriber Enrollment
Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Raul Sergio Villarreal Jr is
enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.
Mailing Address and Practice Location
| Mailing Address | Practice Location Address |
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Raul Sergio Villarreal Jr, MD
11515 Toepperwein Rd Ste 201,
Live Oak, TX 78233-3166
Ph: (210) 646-6978 | Raul Sergio Villarreal Jr, MD
11515 Toepperwein Rd Ste 201,
Live Oak, TX 78233-3166
Ph: (210) 646-6978 |
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