NPPES file of Aug 9, 2026

Ian Williams Tate, M.D.

Emergency Medicine Physician · Denver, CO

Ian Williams Tate, M.D. is an emergency medicine physician with a practice address in Denver, Colorado, and NPI 1386801967, issued on May 21, 2008. Check the license (Colorado 2759, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1386801967
Name
Ian Williams Tate
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
2759 CO
Self-reported in NPPES; status is on the state search
Practice location
777 Bannock St, Denver, CO 80204
Phone
(303) 436-7142
Enumerated
May 21, 2008
Record last updated
May 21, 2008 (not updated in 18 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20120821000801); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 2008
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 777 Bannock St

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

  1. Eric Aaltonen, M.D.Vascular & Interventional Radiology Physician1538340344
  2. Sarah Abbott, LCSWClinical Social Worker1326519042
  3. Ejaaz Abdulkabir, CNMAdvanced Practice Midwife1710551783
  4. Miren Aboitiz, NP-CWomen's Health Nurse Practitioner1568862282
  5. Edgar Acosta, MSWClinical Social Worker1467900381
  6. Shanie Adaime, RDHDental Hygienist1083318554

Verify Ian Williams Tate in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license 2759
    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

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37% fewer Medicare Part D claims than the average emergency medicine physician in 2024

143 Medicare Part D claims for 94 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 17 claims were for opioids.

  1. Ian Tate143
  2. Specialty average226

Most prescribed

  1. Cephalexin26 claims
  2. Ondansetron Odt11 claims
  3. Sulfamethoxazole-Trimethoprim11 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.

Bills Medicare through one group practice

  1. Emergency Professionals OF Colorado PCGreeley, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ian Williams Tate among 1,434 emergency medicine physician records in Colorado

Ian Williams Tate, 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. Its NPI, issued in 2008, is newer than 53% of them.

  • NPI issued2008 · 53% of these records are older, 43% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2008 · median 2011 among the 810 with a school on file
  • Record last updated2008 · 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.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Michael Breyer, MDDenver, CO 802041063490878
  2. Kerry Broderick, MDDenver, CO 802041073526331
  3. Richard Byyny, MDDenver, CO 802041578517082
  4. Stephen Cantrill, MDDenver, CO 802041821018011
  5. Katherine Hurlbut, MDDenver, CO 802041518971662
  6. Michael LiaoDenver, CO 802041336174101
  7. Lisa Maccormack, MDDenver, CO 802041245289834
  8. Vincent Markovchick, MDDenver, CO 802041144239088

Common questions

What is Ian Williams Tate, M.D.'s NPI number?

Ian Williams Tate, M.D.'s National Provider Identifier (NPI) is 1386801967, issued on May 21, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Ian Williams Tate, M.D. located?

The NPPES record lists a practice address at 777 Bannock St, Denver, CO, 80204. Phone: (303) 436-7142. Providers update this record themselves, so call before visiting.

How can I verify Ian Williams Tate, M.D.'s license?

NPPES lists Colorado license number 2759, 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.

How much does Ian Williams Tate, M.D. prescribe under Medicare Part D?

In 2024, Ian Williams Tate, M.D. had 143 Medicare Part D claims for 94 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

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.