Gretchen Orosz, MD
NPI 1609864842 · Geriatric Medicine (Internal Medicine) Physician · Lone Tree, CO
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Orosz, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Lone Tree, CO (NPI 1609864842).
Provider details
- NPI number
- 1609864842
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- E3857 (AR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,543 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 317 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 298 | $89 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 287 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 221 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 259 | 73 |
| Amlodipine Besylate | 242 | 77 |
| Atorvastatin Calcium | 212 | 72 |
| Duloxetine Hcl | 199 | 57 |
| Losartan Potassium | 167 | 57 |
| Lisinopril | 148 | 43 |
| Trazodone Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 12605 E 16th AveAurora, CO 80045-2545Phone: (720) 848-0000
Registry dates
- Enumerated
- 2005-10-12
- Last updated
- 2025-09-09
- Certified
- 2025-09-09
Frequently asked questions
- What is Gretchen Orosz's NPI number?
- Gretchen Orosz's National Provider Identifier (NPI) is 1609864842, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Orosz's specialty?
- Gretchen Orosz is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gretchen Orosz located?
- Gretchen Orosz's practice location on file with NPPES is 9540 Park Meadows Dr, Lone Tree, CO 80124-2894.
- What is Gretchen Orosz's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Orosz is (720) 848-3400.
- Does Gretchen Orosz accept Medicare?
- Gretchen Orosz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Orosz's NPI active?
- Yes — Gretchen Orosz's NPI (1609864842) is active in the NPPES registry as of the last update on 2025-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.