Quick answers
- Where does John J. Orrego see patients?
- Medicare's clinician data lists 5 practice locations, including Lone Tree, CO and Denver, CO. Call before your visit to confirm the address.
- What is John J. Orrego's specialty?
- Medicare lists Endocrinology as the primary specialty.
- Does John J. Orrego accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Orrego 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 John J. Orrego offer telehealth?
- Medicare's clinician data says John J. Orrego offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John J. Orrego?
- (303) 338-4545, as listed in official Medicare / NPI Registry data.
- What is John J. Orrego's NPI number?
- 1891822839. 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 John J. Orrego is enrolled with Medicare (CMS data updated 2026-10-02).
- 10240 Park Meadows DrLone Tree, CO 80124 (303) 338‑4545
- 10350 E Dakota AveDenver, CO 80247
- 10350 E Dakota Ave, Kaiser Permanente Regional OfficeDenver, CO 80247 (303) 338‑4545
- 10350 E Dakota Avenue B, Kaiser Permanente HighDenver, CO 80247 (303) 338‑4545
- 10350 E Dakota Avenue C, Kaiser Permanente Highline ChemicalDenver, CO 80247 (303) 338‑4545
Group practices
Medicare enrollment lists John J. Orrego as a member of this group (CMS data updated 2026-10-02).
- Colorado Permanente Medical Group PC1,327 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1891822839 |
| 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