Quick answers
- Which hospitals does Hugh E. Hallmark work at?
- Medicare's official clinician data lists Hugh E. Hallmark at 1 hospital: AdventHealth Porter. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Hugh E. Hallmark see patients?
- Medicare's clinician data lists 3 practice locations, including Denver, CO. Call before your visit to confirm the address.
- What is Hugh E. Hallmark's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Hugh E. Hallmark accept Medicare assignment?
- Yes. Medicare's clinician data says Hugh E. Hallmark accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Hugh E. Hallmark?
- (303) 744-1065, as listed in official Medicare / NPI Registry data.
- What is Hugh E. Hallmark's NPI number?
- 1154317006. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Hugh E. Hallmark works
Medicare's Facility Affiliation Data lists Hugh E. Hallmark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth PorterDenver, CO · Acute Care Hospital · CCN 060064
Practice locations
Addresses where Hugh E. Hallmark is enrolled with Medicare (CMS data updated 2026-10-02).
- 2525 S Downing StDenver, CO 80210
- 2535 D S Downing St, Suite 460Denver, CO 80210 (303) 744‑1065
- 2535 S Downing StDenver, CO 80210 (303) 778‑5797
Group practices
Medicare enrollment lists Hugh E. Hallmark as a member of this group (CMS data updated 2026-10-02).
- Portercare Adventist Health System774 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Denver
Clinicians with the same Medicare primary specialty in Denver, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Southwestern Medical School At Dallas |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154317006 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians