Stephen Jerome Portz, M.D.
Cardiovascular Disease Physician · Las Vegas, NV
Stephen Jerome Portz, M.D. is a cardiovascular disease physician with a practice address in Las Vegas, Nevada, and NPI 1811933500, issued on Jun 21, 2006. Check the license (Nevada 5648, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Stephen Jerome Portz
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 5648 NV
Self-reported in NPPES; status is on the state search - Practice location
- 3131 LA Canada St Ste 140, Las Vegas, NV 89169
- Phone
- (702) 933-9400
- Enumerated
- Jun 21, 2006
- Record last updated
- Oct 13, 2025
- Fax
- (702) 933-9444
- Medicaid ID
- 1811933500 NV
- Medicare enrollment
- Enrolled (PECOS I20040525001189); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1982
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 176 in Nevada → Look up another NPI →
Also registered at 3131 LA Canada St Ste 140
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pradipta Chaudhuri, MDCardiovascular Disease Physician1457447849
- Nana Esi Kittah, MDEndocrinology, Diabetes & Metabolism Physician1922231745
- Carrie Lofton, RN, APN, ACNP-BCAcute Care Nurse Practitioner1740560614
- Valerie Martinez-VargasEndocrinology, Diabetes & Metabolism Physician1801397641
- Lisa MatthewsMedical Physician Assistant1720203581
- Wardon Ojedapo, PA-CMedical Physician Assistant1164001392
Verify Stephen Jerome Portz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 5648Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
2,838 Medicare Part D claims for 466 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium290 claims
- Metoprolol Succinate203 claims
- Amlodipine Besylate193 claims
- Eliquis174 claims
- Rosuvastatin Calcium167 claims
- Metoprolol Tartrate113 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: $74.42
4 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 16,686 providers of this specialty with any payment received $3,819.56 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 Holdings Nevada IncLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Jerome Portz among 176 cardiovascular disease physician records in Nevada
Stephen Jerome Portz, M.D. is one of 176 cardiovascular disease physician records with a practice address in Nevada. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 22% of them.
- NPI issued2006 · 22% of these records are older, 30% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1982 · median 1994 among the 128 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Nevada
There are 176 cardiovascular disease physician records in Nevada.
All 176 in Nevada → Every provider in Las Vegas → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Pradipta Chaudhuri, MDLas Vegas, NV 891691457447849
- George Scleparis, MDLas Vegas, NV 891691902876105
- Lynda Tirao, M.D.Las Vegas, NV 891691174601645
- Dalia Hawwass, M.D.Las Vegas, NV 891831558705004
- John Costa, M.D.Las Vegas, NV 891481043219041
- Zia Khan, MDLas Vegas, NV 891481386633543
- Martin Schaffer, M.D.Las Vegas, NV 891481841293933
- Fredric Siegel, MDLas Vegas, NV 891481801048814
Common questions
What is Stephen Jerome Portz, M.D.'s NPI number?
Stephen Jerome Portz, M.D.'s National Provider Identifier (NPI) is 1811933500, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Jerome Portz, M.D. located?
The NPPES record lists a practice address at 3131 LA Canada St Ste 140, Las Vegas, NV, 89169. Phone: (702) 933-9400. Providers update this record themselves, so call before visiting.
How can I verify Stephen Jerome Portz, M.D.'s license?
NPPES lists Nevada license number 5648, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen Jerome Portz, M.D. prescribe under Medicare Part D?
In 2024, Stephen Jerome Portz, M.D. had 2,838 Medicare Part D claims for 466 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.