NPIMap

Individual provider Active NPI

Joseph Benjamin Assini, MD

  • Orthopaedic Surgery Physician
  • Denver, CO
National Provider Identifier
1841538832
Registry record updated Oct 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
DR.0053848 Issued in CO
Practice address
2535 S Downing St Ste 100
Denver, CO 80210-5848
Phone
(720) 524-1367
Fax
(720) 524-1422
NPI assigned
Jan 25, 2013
Last updated
Oct 12, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 12, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 271613 NY
Orthopaedic Surgery Physician 207X00000X 88733 ZZ
Orthopaedic Surgery Physician 207X00000X DR.0053848 CO Primary

Addresses

Primary practice location

2535 S Downing St Ste 100
Denver, CO 80210-5848

Mailing address

2535 S Downing St Ste 100
Denver, CO 80210-5848
Phone (720) 524-1367

Other identifiers 2

IdentifierTypeStateIssuer
52878848MedicaidCO
1841538832MedicaidWY

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address JOSEPH.ASSINI@hca3.eclinicaldirectplus.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CO
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20140624001615 CO Practitioner - Orthopedic Surgery 2466676929 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Other, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Select Physical Therapy of West Denver Limited PartnershipGroup PAC ID 6709771157, shared by 5 NPIs, 530 clinicians

Practice addresses (Care Compare)

2525 S Downing St
Denver, CO 80210-5817

2535 D S Downing St
Suite 460
Denver, CO 80210-5817
Phone (303) 744-1065

2535 S Downing St
Denver, CO 80210-5850
Phone (303) 778-5797

2535 S Downing St
100 Cojr Colo Joint Replmt
Denver, CO 80210-5848
Phone (720) 524-1367

5351 S Roslyn St
Greenwood Village, CO 80111-2132

7700 S Broadway
Littleton, CO 80122-2602
Phone (303) 730-8900

7750 S Broadway
260 South Denver Neurosurgery
Littleton, CO 80122-2623
Phone (303) 734-8650

8601 Turnpike Dr
Suite 204
Westminster, CO 80031-7043
Phone (303) 222-4312

9670 W Coal Mine Ave
200 WLNH Primary Care
Littleton, CO 80123-4004
Phone (303) 932-2121

9695 S Yosemite St
Lone Tree, CO 80124-2890

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
85.96 of 100Reported as group
Quality
78.58
Promoting interoperability
100
Improvement activities
40
Cost
74.61

Merit-based Incentive Payment System (MIPS)

Final score
86.99 of 100Reported as individual
Quality
83.15
Promoting interoperability
95
Improvement activities
40
Cost
77.65

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement32
Knee replacement80
Lower limb (leg) arthroscopy (minimally invasive joint repair)1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
271613NYMDOrthopaedic Surgery Physician
88733ZZMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Portercare Adventist Health System Current Accepting new patients
Portercare Adventist Health System CurrentSince Aug 5, 2024 Accepting new patients
Portercare Adventist Health System CurrentSince Aug 5, 2024 Accepting new patients
Portercare Adventist Health System Past Accepting new patients
Portercare Adventist Health System Past Accepting new patients

Locations

2535 S Downing St
Ste 100
Denver, CO 80210
Phone (720) 524-1367

12596 W Bayaud Ave
Ste 100
Lakewood, CO 80228
Phone (303) 551-4156

7750 S Broadway
Ste 260
Littleton, CO 80122
Phone (303) 734-8650

9670 W Coal Mine Ave
Ste 200
Littleton, CO 80123
Phone (303) 392-2121

9695 S Yosemite St
Ste 255C
Lone Tree, CO 80124
Phone (303) 715-7670

Interoperability endpoints

  • Direct secure messaging: jassini3586315@adventhealth.direct-ci.com
  • Direct secure messaging: joseph.assini@hca3.eclinicaldirectplus.com

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 11

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1359072000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791763200000",
    "number": "1841538832",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2535 S DOWNING ST STE 100",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802105848",
            "telephone_number": "720-524-1367",
            "fax_number": "720-524-1422"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2535 S DOWNING ST STE 100",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802105848",
            "telephone_number": "720-524-1367",
            "fax_number": "720-524-1422"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ASSINI",
        "first_name": "JOSEPH",
        "middle_name": "BENJAMIN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-01-25",
        "last_updated": "2026-10-12",
        "certification_date": "2026-10-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NY",
            "license": "271613",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "ZZ",
            "license": "88733",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CO",
            "license": "DR.0053848",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "52878848",
            "state": "CO"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1841538832",
            "state": "WY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "JOSEPH.ASSINI@hca3.eclinicaldirectplus.com",
            "affiliation": "N",
            "address_1": "799 E Hampden Ave",
            "address_2": "SUITE 400",
            "city": "Englewood",
            "state": "CO",
            "country_code": "US",
            "postal_code": "801132700",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Denver, CO

Sources for this page

Verify at the official NPI Registry.