STEPHEN JEROME PORTZ M.D.
NPI 1811933500
Internal Medicine - Cardiovascular Disease in Las Vegas, NV

Q: What is Stephen Portz's NPI number?

The NPI number for Stephen Portz is 1811933500. It was assigned to this individual provider in the NPPES registry on June 21, 2006.

Q: What is Stephen Portz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Portz was last updated on October 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 21, 2006PECOS EnrolledAccepts Medicare Assignment

3131 LA CANADA ST STE 140, LAS VEGAS, NV 89169(702) 933-9400(702) 933-9444 Get Directions Write a Review

NPPES record last updated: October 13, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Stephen Jerome Portz M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEPHEN JEROME PORTZ M.D. (NPI 1811933500) is an individual cardiovascular disease provider in Las Vegas, Nevada, licensed in Nevada (5648) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1982).

NPPES Registry Identity

NPI1811933500

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameSTEPHEN JEROME PORTZCredential: M.D.

Location Address3131 LA CANADA ST STE 140Las Vegas, NV 89169-2579

Mailing Address6355 S Buffalo Dr Fl 3Las Vegas, NV 89113-2133 · (702) 216-3346

Phone(702) 933-9400

Fax(702) 933-9444

Sole ProprietorNo

Medical School CMSUniversity Of Kansas School Of Med (kc/wich/sal)Graduated 1982

Enumeration DateJune 21, 2006

Last NPPES UpdateOctober 13, 2025

NPPES CertifiedOctober 13, 2025

✔ NPI 1811933500 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in NV · 5648

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal Medicine · Interventional CardiologyTaxonomy 207RI0011X · License 5648 (NV)

3131 LA CANADA ST STE 140, Las Vegas, NV 89169

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Other Identifiers 2

Other5648NV · License

Medicaid1811933500NV

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Stephen Jerome Portz M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9335120583

PECOS Enrollment IDI20040525001189

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Stephen Portz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Intermountain Medical Holdings Nevada Inc

10 mi

Internal Medicine

595 W LAKE MEAD PKWY
Henderson, NV 89015

Reassigned Medicare billing, Nevada enrollment
521 clinicians in this Medicare group

NPI 1245997279 (702) 566-5500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

773 services448 patients

Routine electrocardiogram (ecg) using at least 12 leads with tracing 93005

An Electrocardiogram (ECG) is a simple, painless test that records the heart's electrical activity. Using 12 leads attached to your skin, it generates a tracing of your heart rhythm. It helps detect any heart problems by showing the timing and strength of electrical signals passing through each part of your heart.

201 services199 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

156 services39 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

128 services126 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

126 services63 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

74 services74 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 89169 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$131.25 typical visit price

range $57.07 – $173.24

Typical copayment $32.81 (range $14.26 – $43.31)

Most-billed visit code 99204

Established Patient

$71.14 typical visit price

range $18.27 – $140.96

Typical copayment $17.78 (range $4.56 – $35.24)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

2 suppliers24 claims24 services$59.99 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$35.57 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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