William Sungar, DO
NPI 1518225861 · Emergency Medicine Physician · Denver, CO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Sungar, DO is a Emergency Medicine Physician provider in Denver, CO (NPI 1518225861).
Provider details
- NPI number
- 1518225861
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- DR.0056701 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
139 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 85 | $172 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 24 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 18 | $173 |
| Critical Care, First 30-74 Minutes99291 | 12 | $212 |
Typical Medicare-allowed amounts for these services range $120–$212 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 12505 East 16th AveAurora, CO 80045Phone: (720) 848-0000
Registry dates
- Enumerated
- 2012-04-24
- Last updated
- 2024-12-11
- Certified
- 2024-12-11
Frequently asked questions
- What is William Sungar's NPI number?
- William Sungar's National Provider Identifier (NPI) is 1518225861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sungar's specialty?
- William Sungar is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Sungar located?
- William Sungar's practice location on file with NPPES is 777 Bannock St, Denver, CO 80204-4597.
- What is William Sungar's phone number?
- The practice phone number listed in the NPPES registry for William Sungar is (303) 436-4949.
- Does William Sungar accept Medicare?
- William Sungar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Sungar's NPI active?
- Yes — William Sungar's NPI (1518225861) is active in the NPPES registry as of the last update on 2024-12-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.