Quick answers
- Where does Daniel W. Marks see patients?
- Medicare's clinician data lists 1 practice location in Aurora, CO. Call before your visit to confirm the address.
- What is Daniel W. Marks's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Daniel W. Marks accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel W. Marks 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 Daniel W. Marks?
- (800) 243-3839, as listed in official Medicare / NPI Registry data.
- What is Daniel W. Marks's NPI number?
- 1871906420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Daniel W. Marks is enrolled with Medicare (CMS data updated 2026-10-02).
- 1501 S Potomac StAurora, CO 80012 (800) 243‑3839
Group practices
Medicare enrollment lists Daniel W. Marks as a member of this group (CMS data updated 2026-10-02).
- Obstetrix Medical Group of Colorado P C31 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871906420 |
| 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
- 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