Physician Profile
Donald L. Willis, M.D. is a healthcare provider in San Marcos, TX specializing in urology. Donald trained at University of Texas Medical Branch at Galveston, graduating in 1983. According to Medicare claims data, Donald cared for 459 Medicare patients across 676 services. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, leuprolide acetate (for depot suspension), 7.5 mg, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Source: NPPES NPI Registry
1601 REDWOOD RD STE A
San Marcos, TX 78666
Within Urology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Bladder and urethra
Kidney and ureter
Male reproductive and sexual health
Prostate
Urinary symptoms and infection
Bladder & Urination
Kidney health
Men's health
Urinary symptoms
Most searched procedures
Office diagnosis
Bladder procedures
Diagnostic imaging
Kidney & ureter procedures
Kidney and ureter surgery
Male reproductive
Prostate
Prostate procedures
Stone procedures
676 services · 459 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
60 |
| Complete ultrasound scan of pelvis | Imaging | 76856 |
20 |
| Ultrasonic guidance for needle placement | Imaging | 76942 |
11 |
| Leuprolide acetate (for depot suspension), 7.5 mg | Drug given | J9217 |
132 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
243 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
119 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
68 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
23 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Donald L. Willis is an urologist in San Marcos, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Urology”.
NPI registry
Donald L. Willis is listed at 1601 Redwood Rd Ste A, San Marcos, TX 78666. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (512) 396-4400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Donald L. Willis's National Provider Identifier is 1316940372. 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
Donald L. Willis attended University of Texas Medical Branch at Galveston, graduating in 1983. This comes from the CMS National Downloadable File.
CMS public data
Donald L. Willis has 43 years experience. Calculated from a graduation year of 1983, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Donald L. Willis performs procedures including diagnostic exam of bladder and urethra using an endoscope; reads or performs imaging such as complete ultrasound scan of pelvis and ultrasonic guidance for needle placement, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Donald L. Willis. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.