Gretchen M. Orosz, MD
Geriatric Medicine (Internal Medicine) Physician · Lone Tree, CO
Gretchen M. Orosz, MD is a geriatric medicine (internal medicine) physician with a practice address in Lone Tree, Colorado, and NPI 1609864842, issued on Oct 12, 2005. Check the license (Colorado DR.0055776, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gretchen M. Orosz
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License numbers
- DR.0055776 CO
E3857 AR
Self-reported in NPPES; status is on the state search - Practice location
- 9540 Park Meadows Dr, Lone Tree, CO 80124
- Phone
- (720) 848-3400
- Enumerated
- Oct 12, 2005
- Record last updated
- Sep 9, 2025
- Medicare enrollment
- Enrolled (PECOS I20151215002335); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1992
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 103 in Colorado → Look up another NPI →
Also registered at 9540 Park Meadows Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bubis, M.D.Family Medicine Physician1871849323
- Bhargavi Chekuri, MDFamily Medicine Physician1881187375
- Heather Cody, NPFamily Nurse Practitioner1346567658
- Jade CoolStudent in an Organized Health Care Education/Training Program1003656984
- Jennifer Corliss, MDFamily Medicine Physician1780847459
- Cristian Dinescu, MDInternal Medicine Physician1750302790
Verify Gretchen M. Orosz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0055776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
4,324 Medicare Part D claims for 406 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 153 claims were for opioids.
Most prescribed
- Levothyroxine Sodium259 claims
- Amlodipine Besylate242 claims
- Atorvastatin Calcium212 claims
- Duloxetine Hcl199 claims
- Losartan Potassium167 claims
- Lisinopril148 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gretchen M. Orosz among 103 geriatric medicine (internal medicine) physician records in Colorado
Gretchen M. Orosz, MD is one of 103 geriatric medicine (internal medicine) physician records with a practice address in Colorado. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1992 · median 1998 among the 51 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Colorado
There are 103 geriatric medicine (internal medicine) physician records in Colorado.
All 103 in Colorado → Every provider in Lone Tree → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Jill Sohayda, MDLittleton, CO 801231275596652
- Gregory Gahm, M.D.Greenwood Village, CO 801211659424299
- Michael Leiding, MDHighlands Ranch, CO 801291063447795
- George Melone, M.D.Highlands Ranch, CO 801291780659573
- Leah Ozdemir, D.O.Highlands Ranch, CO 801291285938399
- Megan Burke, MDParker, CO 801341265774210
- Katherine Pearce, MDParker, CO 801341588813208
- Jessica Adams, MDAurora, CO 800451790366888
Common questions
What is Gretchen M. Orosz, MD's NPI number?
Gretchen M. Orosz, MD's National Provider Identifier (NPI) is 1609864842, issued on Oct 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen M. Orosz, MD located?
The NPPES record lists a practice address at 9540 Park Meadows Dr, Lone Tree, CO, 80124. Phone: (720) 848-3400. Providers update this record themselves, so call before visiting.
How can I verify Gretchen M. Orosz, MD's license?
NPPES lists Colorado license number DR.0055776, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gretchen M. Orosz, MD prescribe under Medicare Part D?
In 2024, Gretchen M. Orosz, MD had 4,324 Medicare Part D claims for 406 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.