William Cannon Lewis, M.D.
Colon & Rectal Surgery Physician · San Antonio, TX
William Cannon Lewis, M.D. is a colon & rectal surgery physician with a practice address in San Antonio, Texas, and NPI 1437237369, issued on Nov 1, 2006. Check the license (Texas K8936, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Cannon Lewis
- Credential
- M.D.
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- K8936 TX
Self-reported in NPPES; status is on the state search - Practice location
- 18707 Hardy Oak Blvd Ste 210, San Antonio, TX 78258
- Phone
- (210) 593-2500
- Enumerated
- Nov 1, 2006
- Record last updated
- Jul 21, 2022
- Fax
- (210) 593-2501
- Medicare enrollment
- Enrolled (PECOS I20120821000741); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 209 in Texas → Look up another NPI →
Also registered at 18707 Hardy Oak Blvd Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bruce Conway, MDSurgery Physician1629005996
- George Hsieh, MDSpecialist1639384837
- Joe Johnston, MDSurgery Physician1679507123
Verify William Cannon Lewis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K8936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% more Medicare Part D claims than the average colon & rectal surgery physician in 2024
318 Medicare Part D claims for 170 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 77 claims were for opioids.
Most prescribed
- Sod Sulf-Potass Sulf-Mag Sulf49 claims
- Sodium Chloride45 claims
- Tramadol Hcl37 claims
- Hydrocodone-Acetaminophen36 claims
- Sutab29 claims
- Cholestyramine22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 64.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
William Cannon Lewis among 209 colon & rectal surgery physician records in Texas
William Cannon Lewis, M.D. is one of 209 colon & rectal surgery physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 56% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated1994 · median 2004 among the 174 with a school on file
- Record last updated2022 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in Texas
There are 209 colon & rectal surgery physician records in Texas.
All 209 in Texas → Every provider in San Antonio → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Mario Alcantara, M.D.San Antonio, TX 782581609039049
- Tamara Merchant-McCambry, M.D.San Antonio, TX 782581235183526
- Raul Ramos, MDSan Antonio, TX 782581629076096
- John Winston, M.D.San Antonio, TX 782581356357255
- James Prieto, MDSan Antonio, TX 782491154580769
- William Perry, MDLackland A F B, TX 782361821076266
- Bryan KlineSan Antonio, TX 782341225424047
- Katharine Markell, M.D.Ft Sam Houston, TX 782341457328361
Common questions
What is William Cannon Lewis, M.D.'s NPI number?
William Cannon Lewis, M.D.'s National Provider Identifier (NPI) is 1437237369, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Cannon Lewis, M.D. located?
The NPPES record lists a practice address at 18707 Hardy Oak Blvd Ste 210, San Antonio, TX, 78258. Phone: (210) 593-2500. Providers update this record themselves, so call before visiting.
How can I verify William Cannon Lewis, M.D.'s license?
NPPES lists Texas license number K8936, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Cannon Lewis, M.D. prescribe under Medicare Part D?
In 2024, William Cannon Lewis, M.D. had 318 Medicare Part D claims for 170 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is William Cannon Lewis, M.D.'s MIPS final score?
The 2023 MIPS final score is 64.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.