NPIMap

Individual provider Active NPI

Stephen Jerome Portz, M.D.

  • Cardiovascular Disease Physician
  • Las Vegas, NV
National Provider Identifier
1811933500
Registry record updated Oct 13, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
5648 Issued in NV
Practice address
3131 La Canada St Ste 140
Las Vegas, NV 89169-2579
Phone
(702) 933-9400
Fax
(702) 933-9444
NPI assigned
Jun 21, 2006
Last updated
Oct 13, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 13, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X 5648 NV Primary
Interventional Cardiology Physician 207RI0011X 5648 NV

Addresses

Primary practice location

3131 La Canada St Ste 140
Las Vegas, NV 89169-2579

Mailing address

6355 S Buffalo Dr FL 3
Las Vegas, NV 89113-2133
Phone (702) 216-3346

Other identifiers 2

IdentifierTypeStateIssuer
1811933500MedicaidNV
5648OtherNVLICENSE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NV
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
I20040525001189 NV Practitioner - Cardiovascular Disease (Cardiology) 9335120583 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
University of Kansas School of Med (KC/Wich/Sal), 1982
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

3131 La Canada St
Suite 200
Las Vegas, NV 89169-2579
Phone (702) 369-5582

Merit-based Incentive Payment System (MIPS)

Final score
22.75 of 100Reported as individual
Quality
0
Promoting interoperability
0
Improvement activities
0
Cost
75.84

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Intermountain Medical Holdings Nevada Inc Interventional Cardiology CurrentSince Jan 1, 2022 Accepting new patients
Healthcare Partners Medical Group Coats LTD Cardiovascular Disease Current Accepting new patients
Intermountain Medical Holdings Nevada Inc Cardiovascular Disease CurrentSince Jan 1, 2022 Accepting new patients
Desert Springs Hospital Past Accepting new patients
Cardiovascular Consultants of Nevada Cardiovascular Disease Past Accepting new patients
Dignity Health Past Accepting new patients
Talbert Medical Group Past Accepting new patients
Sunrise Hospital and Medical Center, LLC Past Accepting new patients
Summerlin Hospital Medical Center L L C Past Accepting new patients

Locations

595 W Lake Mead Pkwy
Henderson, NV 89015
Phone (702) 566-5500

3131 La Canada St
Ste 140
Las Vegas, NV 89169
Phone (702) 933-9400

3131 La Canada St
Ste 200
Las Vegas, NV 89169
Phone (702) 369-5582

4880 Wynn Rd
Las Vegas, NV 89103
Phone (702) 382-4554

6355 S Buffalo Dr
Fl 3
Las Vegas, NV 89113
Phone (702) 479-4881

9280 W Sunset Rd
Ste 320
Las Vegas, NV 89148
Phone (702) 534-5464

1397 S Loop Rd
Pahrump, NV 89048
Phone (775) 727-5500

Organizations & group practices 9

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.

NPI Registry JSON

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

{
    "created_epoch": "1150848000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760313600000",
    "number": "1811933500",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6355 S BUFFALO DR FL 3",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891132133",
            "telephone_number": "702-216-3346"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3131 LA CANADA ST STE 140",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891692579",
            "telephone_number": "702-933-9400",
            "fax_number": "702-933-9444"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PORTZ",
        "first_name": "STEPHEN",
        "middle_name": "JEROME",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-21",
        "last_updated": "2025-10-13",
        "certification_date": "2025-10-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NV",
            "license": "5648",
            "primary": true
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "NV",
            "license": "5648",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1811933500",
            "state": "NV"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE",
            "identifier": "5648",
            "state": "NV"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Las Vegas, NV

Sources for this page

Verify at the official NPI Registry.