Michelle Karen Cassara, MD
Endocrinology, Diabetes & Metabolism Physician · Arvada, CO
Michelle Karen Cassara, MD is an endocrinology, diabetes & metabolism physician with a practice address in Arvada, Colorado, and NPI 1518092972, issued on Feb 23, 2007. Check the license (Colorado 46410, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michelle Karen Cassara
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 46410 CO
Self-reported in NPPES; status is on the state search - Practice location
- 15389 W 91St Dr Ste 200, Arvada, CO 80007
- Phone
- (303) 403-7933
- Enumerated
- Feb 23, 2007
- Record last updated
- Jan 30, 2025
- Fax
- (303) 403-7945
- Medicaid ID
- 69820244 CO
- Medicare enrollment
- Enrolled (PECOS I20080821000063); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 149 in Colorado → Look up another NPI →
Also registered at 15389 W 91St Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Caitlin Bell, MDEndocrinology, Diabetes & Metabolism Physician1841751765
- Irinel Stanciu, MDEndocrinology, Diabetes & Metabolism Physician1720068760
- Breanna Young, PA-CPhysician Assistant1821695339
Verify Michelle Karen Cassara in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 46410Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
3,322 Medicare Part D claims for 453 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.
Most prescribed
- Levothyroxine Sodium514 claims
- Synthroid213 claims
- Metformin Hcl159 claims
- Ozempic155 claims
- Mounjaro153 claims
- Liothyronine Sodium139 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.
Industry payments in 2024: $11,680.78
44 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Intermountain Medical Group Denver LLCBroomfield, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michelle Karen Cassara among 149 endocrinology, diabetes & metabolism physician records in Colorado
Michelle Karen Cassara, MD is one of 149 endocrinology, diabetes & metabolism physician records with a practice address in Colorado. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 31% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2001 · median 2002 among the 106 with a school on file
- Record last updated2025 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Colorado
There are 149 endocrinology, diabetes & metabolism physician records in Colorado.
All 149 in Colorado → Every provider in Arvada → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Caitlin Bell, MDArvada, CO 800071841751765
- Irinel Stanciu, MDArvada, CO 800071720068760
- Susan Sherman, MDAurora, CO 800111073579728
- Robert Rees-Jones, M.D.Aurora, CO 800121982666756
- Jill Maaske, MDLafayette, CO 800261336306687
- Laura Wolsko, MDLafayette, CO 800261538166707
- Christopher Fox, M.D.Louisville, CO 800271083696843
- Kelly Mandagere, M.D.Louisville, CO 800271255492104
Common questions
What is Michelle Karen Cassara, MD's NPI number?
Michelle Karen Cassara, MD's National Provider Identifier (NPI) is 1518092972, issued on Feb 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Karen Cassara, MD located?
The NPPES record lists a practice address at 15389 W 91St Dr Ste 200, Arvada, CO, 80007. Phone: (303) 403-7933. Providers update this record themselves, so call before visiting.
How can I verify Michelle Karen Cassara, MD's license?
NPPES lists Colorado license number 46410, 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 Michelle Karen Cassara, MD prescribe under Medicare Part D?
In 2024, Michelle Karen Cassara, MD had 3,322 Medicare Part D claims for 453 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.