Quick answers
- Which hospitals does David Marcus work at?
- Medicare's official clinician data lists David Marcus at 2 hospitals: Aspen Valley Hospital District and Valley View Hospital Association. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David Marcus see patients?
- Medicare's clinician data lists 3 practice locations, including Grapevine, TX, Glenwood Spgs, CO and Flower Mound, TX. Call before your visit to confirm the address.
- What is David Marcus's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does David Marcus accept Medicare assignment?
- Yes. Medicare's clinician data says David Marcus 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.
- Does David Marcus offer telehealth?
- Medicare's clinician data says David Marcus offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for David Marcus?
- (817) 251-9080, as listed in official Medicare / NPI Registry data.
- What is David Marcus's NPI number?
- 1306089362. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David Marcus works
Medicare's Facility Affiliation Data lists David Marcus at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aspen Valley Hospital DistrictAspen, CO · Critical Access Hospital · CCN 061324
- Valley View Hospital AssociationGlenwood Springs, CO · Acute Care Hospital · CCN 060075
Practice locations
Addresses where David Marcus is enrolled with Medicare (CMS data updated 2026-10-02).
- 1631 Lancaster Dr, Suite 150Grapevine, TX 76051 (817) 251‑9080
- 1906 Blake AveGlenwood Spgs, CO 81601 (970) 384‑7570
- 4370 Medical Arts Dr, Suite 100Flower Mound, TX 75028 (972) 537‑4100
Group practices
Medicare enrollment lists David Marcus as a member of these groups (CMS data updated 2026-10-02).
- Texas Oncology PA1,014 clinicians in the group
- Valley View Hospital Association202 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Texas
Clinicians with the same Medicare primary specialty in Texas — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Emory University School Of Medicine |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1306089362 |
| 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