William Gannon Sungar, DO
Emergency Medicine Physician · Denver, CO
William Gannon Sungar, DO is an emergency medicine physician with a practice address in Denver, Colorado, and NPI 1518225861, issued on Apr 24, 2012. Check the license (Colorado DR.0056701, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- William Gannon Sungar
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- DR.0056701 CO
Self-reported in NPPES; status is on the state search - Practice location
- 777 Bannock St, Denver, CO 80204
- Phone
- (303) 436-4949
- Enumerated
- Apr 24, 2012
- Record last updated
- Dec 11, 2024
- Fax
- (303) 602-5184
- Medicare enrollment
- Enrolled (PECOS I20160809000198); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,434 in Colorado → Look up another NPI →
Also registered at 777 Bannock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shanie Adaime, RDHDental Hygienist1083318554
Verify William Gannon Sungar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0056701Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average emergency medicine physician in 2024
63 Medicare Part D claims for 43 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of 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 practice group's MIPS final score for 2023 (Medicare payment program): 91.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Denver Health And Hospital AuthorityDenver, CO
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Gannon Sungar among 1,434 emergency medicine physician records in Colorado
William Gannon Sungar, DO 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 2012, is newer than 68% of them.
- NPI issued2012 · 68% of these records are older, 27% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2012 · median 2011 among the 810 with a school on file
- Record last updated2024 · 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.
All 1,434 in Colorado → Every provider in Denver → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Michael Breyer, MDDenver, CO 802041063490878
- Kerry Broderick, MDDenver, CO 802041073526331
- Richard Byyny, MDDenver, CO 802041578517082
- Stephen Cantrill, MDDenver, CO 802041821018011
- Katherine Hurlbut, MDDenver, CO 802041518971662
- Michael LiaoDenver, CO 802041336174101
- Lisa Maccormack, MDDenver, CO 802041245289834
- Vincent Markovchick, MDDenver, CO 802041144239088
Common questions
What is William Gannon Sungar, DO's NPI number?
William Gannon Sungar, DO's National Provider Identifier (NPI) is 1518225861, issued on Apr 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is William Gannon Sungar, DO located?
The NPPES record lists a practice address at 777 Bannock St, Denver, CO, 80204. Phone: (303) 436-4949. Providers update this record themselves, so call before visiting.
How can I verify William Gannon Sungar, DO's license?
NPPES lists Colorado license number DR.0056701, 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 William Gannon Sungar, DO prescribe under Medicare Part D?
In 2024, William Gannon Sungar, DO had 63 Medicare Part D claims for 43 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is William Gannon Sungar, DO's MIPS final score?
The 2023 MIPS final score is 91.1 of 100, reported for the practice group. 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.