Physician Profile
William C. Lewis, M.D.
Unclaimed ProfileAbout Dr. Lewis
William C. Lewis, M.D. practices colon & rectal surgery in San Antonio, TX. William is a 1994 graduate of Baylor College of Medicine. William is also listed as specializing in surgery. Medicare claims data shows William provided 273 services to 259 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, new patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more, and new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 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.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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) 593-2500
- Email not available
Practice Locations
18707 HARDY OAK BLVD STE 210
San Antonio, TX 78258
8042 Wurzbach Rd Suite 310
San Antonio, TX 78229
Procedures Most Often Billed to Medicare
273 services · 259 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
18 | As often as other peers in Colon & Rectal Surgery |
| Partial removal of large bowel using an endoscope | Procedure | 44204 |
17 | More often than most peers in Colon & Rectal Surgery |
| Removal of multiple hemorrhoid groups | Procedure | 46260 |
12 | |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
56 | More often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
38 | More often than most peers in Colon & Rectal Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
34 | More often than most peers in Colon & Rectal Surgery |
| 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 |
29 | More often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
25 | More often than most peers in Colon & Rectal Surgery |
| Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | Billing code | G0121 |
24 | More often than most peers in Colon & Rectal Surgery |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
20 |
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.
Related specialists at this location 5
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.
Other colorectal surgeons in San Antonio 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Baylor College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1994 at Baylor College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of large bowel using a flexible endoscope 8
Providers in TX who bill this service to Medicare most often.
Common questions
What is William C. Lewis's specialty?
William C. Lewis is a colorectal surgeon in San Antonio, TX. That is the designation recorded for this NPI in the federal registry, where it is listed as “Colon & Rectal Surgery”.
NPI registry
Where can I find William C. Lewis?
William C. Lewis is listed at 18707 Hardy Oak Blvd Ste 210, San Antonio, TX 78258. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact William C. Lewis?
The number on file is (210) 593-2500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for William C. Lewis?
William C. Lewis's National Provider Identifier is 1437237369. 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
What is William C. Lewis's education?
William C. Lewis attended Baylor College of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does William C. Lewis have?
William C. Lewis has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What is William C. Lewis known for?
According to Medicare billing data, William C. Lewis performs procedures including diagnostic exam of large bowel using a flexible endoscope, partial removal of large bowel using an endoscope and removal of multiple hemorrhoid groups, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is William C. Lewis's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by William C. Lewis. 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.