Dr Stuart S Kassan, MD - Medicare Rheumatology in Denver, CO

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Dr Stuart S Kassan, MD is a medicare enrolled "Internal Medicine - Rheumatology" physician in Denver, Colorado. He went to George Washington University School Of Medicine and graduated in 1972 and has 52 years of diverse experience with area of expertise as Rheumatology. He is a member of the group practice Legacy Healthcare Services Inc, National Jewish Health and his current practice location is 1400 Jackson St, Denver, Colorado. You can reach out to his office (for appointments etc.) via phone at (303) 388-4461.

Dr Stuart S Kassan is licensed to practice in Colorado (license number 21547) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1093706475.

Contact Information

Dr Stuart S Kassan, MD
1400 Jackson St,
Denver, CO 80206-2762
(303) 388-4461
(303) 398-1211

Map and Direction




Physician's Profile

Full NameDr Stuart S Kassan
GenderMale
SpecialityRheumatology
Experience52 Years
Location1400 Jackson St, Denver, Colorado
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Stuart S Kassan attended and graduated from George Washington University School Of Medicine in 1972
  NPI Data:
  • NPI Number: 1093706475
  • Provider Enumeration Date: 11/03/2005
  • Last Update Date: 01/04/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7911890595
  • Enrollment ID: I20040206000218

Medical Identifiers

Medical identifiers for Dr Stuart S Kassan such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1093706475NPI-NPPES
01215474MedicaidCO

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RR0500XInternal Medicine - Rheumatology 21547 (Colorado)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
National Jewish HealthDenver, COHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Legacy Healthcare Services Inc21633397223341
National Jewish Health4587577028221

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Stuart S Kassan allows following entities to bill medicare on his behalf.
Entity NameDenver Health And Hospital Authority
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477569838
PECOS PAC ID: 4688583578
Enrollment ID: O20031105000211
Entity NameNational Jewish Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326015777
PECOS PAC ID: 4587577028
Enrollment ID: O20031110000757
Entity NameInfusion Center Of Denver, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1417186628
PECOS PAC ID: 3971659590
Enrollment ID: O20090923000752
Entity NameVivo Infusion Colorado Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1689382277
PECOS PAC ID: 2769854884
Enrollment ID: O20230217001030
Entity NameVivo Infusion Colorado Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366228140
PECOS PAC ID: 2769854884
Enrollment ID: O20230923000099

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Stuart S Kassan is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Stuart S Kassan, MD
1400 Jackson St,
Denver, CO 80206-2762

Ph: (303) 388-4461		Dr Stuart S Kassan, MD
1400 Jackson St,
Denver, CO 80206-2762

Ph: (303) 388-4461

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.