Allysa Lynn Guerrero, DNP, APRN, FNP-C
Family Nurse Practitioner · San Antonio, TX
At a glance
903 W Martin St, San Antonio, TX 78207-0903
NPPES record updated Mar 5, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
903 W Martin StSan Antonio, TX 78207-0903
Additional reported practice locations
3860 E Interstate Highway 10San Antonio, TX 782204063
Phone: 2106445060
Fax: 2107026926 3611 Jaguar Pkwy
San Antonio, TX 782243271
Phone: 7262369560
Fax: 2107026896 4647 Medical Dr
San Antonio, TX 782294403
Phone: 2103585510
Fax: 2103588536
Education & affiliations
- Medical / professional school
- University Of Texas Medical School At San Antonio
- Graduation year
- 2022
- CMS specialties
- Nurse Practitioner
Practice groups
Reported hospital affiliations
- University Health System San Antonio, TX
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $545.25 |
Reporting companies
| Company | Amount |
|---|---|
| BOSTON SCIENTIFIC CORPORATION | $143.46 |
| TEVA PHARMACEUTICALS USA, INC. | $114.14 |
| ABBVIE INC. | $51.23 |
| TAKEDA PHARMACEUTICALS U.S.A., INC. | $38.60 |
| EISAI INC. | $30.59 |
| MERCK SHARP & DOHME LLC | $29.72 |
| ASTRAZENECA PHARMACEUTICALS LP | $28.63 |
| TERSERA THERAPEUTICS LLC | $27.83 |
| Other reporting companies | $81.05 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Family Nurse Practitioner
- Taxonomy code
- 363LF0000X
- Enumeration date
- Sep 7, 2022
- Record updated
- Mar 5, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- DNP, APRN, FNP-C
Reported taxonomies and licenses
363LF0000X · Primary
License reported: 1096886 TX
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
903 W Martin StSan Antonio, TX 78207-0903
- Phone
- (210) 358-3400
Mailing address
903 W MARTIN STSAN ANTONIO, TX 782070903
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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