Joanna I. Trojanowski, MD
Geriatric Medicine (Family Medicine) Physician · Golden, CO
Joanna I. Trojanowski, MD is a geriatric medicine (family medicine) physician with a practice address in Golden, Colorado, and NPI 1891957056, issued on Jun 30, 2008. Check the license (Colorado DR.0055397, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Joanna I. Trojanowski
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License numbers
- DR.0055397 CO
MD158553 OR
MD443131 PA
MT194009 PA
Self-reported in NPPES; status is on the state search - Practice location
- 5920 Mcintyre St, Golden, CO 80403
- Phone
- (303) 949-1250
- Enumerated
- Jun 30, 2008
- Record last updated
- Nov 19, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (family medicine) physician records → All 28 in Colorado → Look up another NPI →
Also registered at 5920 Mcintyre St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clarence Adams, NPAdult Health Nurse Practitioner1609278290
- Mark Adams, MDGeriatric Medicine (Internal Medicine) Physician1881682888
- Maureen Allen, WHNPWomen's Health Nurse Practitioner1770525925
- Katherine Arthur, PA-CPhysician Assistant1710127659
- Myrtle Barlow, NP-CNurse Practitioner1629331186
- Sharon Blumenthal, FNPFamily Nurse Practitioner1861628802
Verify Joanna I. Trojanowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0055397Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
550 Medicare Part D claims for 68 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Levothyroxine Sodium51 claims
- Furosemide33 claims
- Levetiracetam31 claims
- Tamsulosin Hcl31 claims
- Lisinopril30 claims
- Olanzapine28 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.
Joanna I. Trojanowski among 28 geriatric medicine (family medicine) physician records in Colorado
Joanna I. Trojanowski, MD is one of 28 geriatric medicine (family 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 2008, is newer than 61% of them.
- NPI issued2008 · 61% of these records are older, 29% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2015 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X 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 (Family Medicine) Physician providers in Colorado
There are 28 geriatric medicine (family medicine) physician records in Colorado.
All 28 in Colorado → Every provider in Golden → Geriatric Medicine (Family Medicine) Physician nationwide →
The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Sushanthi Katta, MDGolden, CO 804031588697726
- Seema Siraj, MDGolden, CO 804031952595928
- Madison LucasMorrison, CO 804651033354386
- Anne Giesen, DOBoulder, CO 803031851408926
- Michele Lee, MDBoulder, CO 803031922015973
- Amber McCollumFort Collins, CO 805241255470266
- Rebecca Jackson, DOFort Collins, CO 805281568621613
- Cara Johnson, DOLoveland, CO 805381508095332
Common questions
What is Joanna I. Trojanowski, MD's NPI number?
Joanna I. Trojanowski, MD's National Provider Identifier (NPI) is 1891957056, issued on Jun 30, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Joanna I. Trojanowski, MD located?
The NPPES record lists a practice address at 5920 Mcintyre St, Golden, CO, 80403. Phone: (303) 949-1250. Providers update this record themselves, so call before visiting.
How can I verify Joanna I. Trojanowski, MD's license?
NPPES lists Colorado license number DR.0055397, 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 Joanna I. Trojanowski, MD prescribe under Medicare Part D?
In 2024, Joanna I. Trojanowski, MD had 550 Medicare Part D claims for 68 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.