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Edit this profileAt a glance
- 4411 Medical Dr Ste 120, San Antonio, TX 78229
About William Stiles
William A. Stiles, APRN-CNP is a nurse practitioner based in San Antonio, TX. William is also listed as specializing in nurse practitioner — acute care, nurse practitioner — adult health, and nurse practitioner — gerontology. According to Medicare claims data, William cared for 383 Medicare patients across 1,238 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes. The provider's National Provider Identifier (NPI) is 1528791456.
Factual summary compiled by Guide.md from public records; not written by this provider.
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (210) 614-5400
- Email not available
Practice Locations
4411 MEDICAL DR STE 120
San Antonio, TX 78229
Procedures Most Often Billed to Medicare
1,238 services · 383 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
862 | More than most peers in Nurse Practitioner |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
220 | More often than most peers in Nurse Practitioner |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
156 | More than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 6
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 8 related providers in 1 group
Common questions
What is William A. Stiles's specialty?
William A. Stiles is a nurse practitioner in San Antonio, TX. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find William A. Stiles?
William A. Stiles is listed at 4411 Medical Dr Ste 120, San Antonio, TX 78229. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William A. Stiles?
The number on file is (210) 614-5400. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William A. Stiles's NPI number?
William A. Stiles's National Provider Identifier is 1528791456. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
How long has William A. Stiles been practicing?
William A. Stiles has 4+ years experience. Registered with an NPI since 2022. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What is William A. Stiles known for?
According to Medicare billing data, William A. Stiles the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William A. Stiles confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William A. Stiles. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.