William C. Janss, MD
Internal Medicine Physician · El Paso, TX
William C. Janss, MD is an internal medicine physician with a practice address in El Paso, Texas, and NPI 1558377325, issued on Jul 31, 2006. Check the license (Texas K4462, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William C. Janss
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- K4462 TX
Self-reported in NPPES; status is on the state search - Practice location
- 221 N Kansas St, El Paso, TX 79901
- Phone
- (915) 546-9200
- Enumerated
- Jul 31, 2006
- Record last updated
- Apr 14, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (915) 546-9800
- Medicaid IDs
- 33632359 NM
1162018-08 TX - Entity
- Type 1 · individual
Also registered at 221 N Kansas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie AvilaBehavior Technician1871208249
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- Catherine DamascoBehavior Technician1043872419
- Janelle DowdyBehavior Technician1619566122
- Leticia Gurrola-OrnelasBehavior Technician1730740754
Verify William C. Janss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K4462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
262 internal medicine physician records list a practice address in El Paso
They are 262 of the 11,091 NPPES records with a practice address in El Paso, and 9,175 internal medicine physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 262 in El Paso → All 9,175 in Texas → Every provider in El Paso →
Other internal medicine physician records in Texas
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- Anunaya AashishDenton, TX1134246374
- Queenie Ann Abad, M.D.San Antonio, TX1174979785
- Fuad Abaleka, M.DLubbock, TX1861925596
- Carol Abalihi, M.D.El Paso, TX1326136243
- Oliverio Abarca Guzman, MDHarlingen, TX1346972940
- Obinna Abaribe, M.DMansfield, TX1457704355
- Enyinnaya Abarikwu, MDTyler, TX1174788178
- Sulaiman Abawi, D.O.Frisco, TX1780845255
Common questions
What is William C. Janss, MD's NPI number?
William C. Janss, MD's National Provider Identifier (NPI) is 1558377325, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William C. Janss, MD located?
The NPPES record lists a practice address at 221 N Kansas St, El Paso, TX, 79901. Phone: (915) 546-9200. Providers update this record themselves, so call before visiting.
How can I verify William C. Janss, MD's license?
NPPES lists Texas license number K4462, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.