NPPES file of Aug 9, 2026

William Barnard Clem, M.D.

Emergency Medicine Physician · Denver, CO

William Barnard Clem, M.D. is an emergency medicine physician with a practice address in Denver, Colorado, and NPI 1700862505, issued on Dec 22, 2005. Check the license (Colorado 29361, as entered in NPPES) on the Colorado Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700862505
Name
William Barnard Clem
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
29361 CO
Self-reported in NPPES; status is on the state search
Practice location
1719 E 19TH Ave, Denver, CO 80218
Phone
(303) 839-6900
Enumerated
Dec 22, 2005
Record last updated
Jul 13, 2026
Fax
(303) 839-6157
Medicaid ID
04004891 CO
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest emergency medicine physician records → All 1,434 in Colorado → Look up another NPI →

Also registered at 1719 E 19TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Steven AaronsonEmergency Medicine Physician1326081951
  2. Whitney AndersonAcute Care Nurse Practitioner1235504028
  3. Jennifer Arble, D.O.Pediatrics Physician1811337595
  4. Denise Avila, PHARMDPharmacist1295656288
  5. Cassandra Banks, NNPNeonatal Nurse Practitioner1548543705
  6. Holli Barber, MDHospitalist Physician1083034912

Verify William Barnard Clem in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 29361    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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William Barnard Clem among 1,434 emergency medicine physician records in Colorado

William Barnard Clem, M.D. is one of 1,434 emergency medicine physician records with a practice address in Colorado. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileNo · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in Colorado

There are 1,434 emergency medicine physician records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,434 in Colorado → Every provider in Denver → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Steven AaronsonDenver, CO 802181326081951
  2. Bruce Adams, M.D.Denver, CO 802181407946197
  3. Scott BentzDenver, CO 802181700861879
  4. Alan ComoDenver, CO 802181023091659
  5. Bruce Evans, MDDenver, CO 802181659480903
  6. David Gilmore, MDDenver, CO 802181912085275
  7. David Glaser, MDDenver, CO 802181205949385
  8. Cynthia KelmensonDenver, CO 802181962488460

Common questions

What is William Barnard Clem, M.D.'s NPI number?

William Barnard Clem, M.D.'s National Provider Identifier (NPI) is 1700862505, issued on Dec 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William Barnard Clem, M.D. located?

The NPPES record lists a practice address at 1719 E 19TH Ave, Denver, CO, 80218. Phone: (303) 839-6900. Providers update this record themselves, so call before visiting.

How can I verify William Barnard Clem, M.D.'s license?

NPPES lists Colorado license number 29361, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.