Quick answers
- Which hospitals does Ryan C. Mascarenhas work at?
- Medicare's official clinician data lists Ryan C. Mascarenhas at 4 hospitals: AdventHealth Littleton, HCA HealthONE Mountain Ridge, Sky Ridge Medical Center and UCHealth Highlands Ranch Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan C. Mascarenhas see patients?
- Medicare's clinician data lists 1 practice location in Highlands Ranch, CO. Call before your visit to confirm the address.
- What is Ryan C. Mascarenhas's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does Ryan C. Mascarenhas accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan C. Mascarenhas 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 Ryan C. Mascarenhas offer telehealth?
- Medicare's clinician data says Ryan C. Mascarenhas offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ryan C. Mascarenhas?
- (303) 799-8760, as listed in official Medicare / NPI Registry data.
- What is Ryan C. Mascarenhas's NPI number?
- 1710203682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan C. Mascarenhas works
Medicare's Facility Affiliation Data lists Ryan C. Mascarenhas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AdventHealth LittletonLittleton, CO · Acute Care Hospital · CCN 060113
- HCA HealthONE Mountain RidgeThornton, CO · Acute Care Hospital · CCN 060065
- Sky Ridge Medical CenterLone Tree, CO · Acute Care Hospital · CCN 060112
- UCHealth Highlands Ranch HospitalHighlands Ranch, CO · Acute Care Hospital · CCN 060132
Practice locations
Addresses where Ryan C. Mascarenhas is enrolled with Medicare (CMS data updated 2026-10-02).
- 8671 S Quebec St, Suite 110Highlands Ranch, CO 80130 (303) 799‑8760
Group practices
Medicare enrollment lists Ryan C. Mascarenhas as a member of this group (CMS data updated 2026-10-02).
- Denver Nephrologists PC47 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Highlands Ranch
Clinicians with the same Medicare primary specialty in Highlands Ranch, CO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1710203682 |
| 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