Steven J. Portouw, M.D.
Emergency Medicine Physician · Encinitas, CA
Steven J. Portouw, M.D. is an emergency medicine physician with a practice address in Encinitas, California, and NPI 1659371995, issued on Jul 28, 2005. Check the license (California G85996, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Steven J. Portouw
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G85996 CA
Self-reported in NPPES; status is on the state search - Practice location
- 354 Santa FE Dr, Encinitas, CA 92024
- Phone
- (760) 230-2251
- Enumerated
- Jul 28, 2005
- Record last updated
- Jul 24, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050215001149); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1991
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 354 Santa FE Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neal Aaron, D.O.Emergency Medicine Physician1114283520
- Andrew Accardi, M.D.Emergency Medicine Physician1992781173
- Sonia Ahuja, M.D.Internal Medicine Physician1528059490
- Jeannette Aldous, MDInternal Medicine Physician1073650339
- Lauren Alexander, M.D.Emergency Medicine Physician1285898163
- Sam Alkass, PASurgical Physician Assistant1841428042
Verify Steven J. Portouw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G85996Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average emergency medicine physician in 2024
122 Medicare Part D claims for 76 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Scripps HealthSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven J. Portouw among 7,751 emergency medicine physician records in California
Steven J. Portouw, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1991 · median 2011 among the 4,560 with a school on file
- Record last updated2015 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 emergency medicine physician records list a practice address in Encinitas
They are 33 of the 1,874 NPPES records with a practice address in Encinitas, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Encinitas → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Andrew Accardi, M.D.Encinitas, CA 920241992781173
- Steven Andree, M.D.Encinitas, CA 920241700886496
- Stuart Breisch, MDEncinitas, CA 920241548229297
- Allan Churukian, M.D.Encinitas, CA 920241639118789
- Mary Anne Fuchs, M.D.Encinitas, CA 920241790785301
- Richard Kingsland, M.D.Encinitas, CA 920241235139841
- Ronald Maccormick, M.D.Encinitas, CA 920241699775213
- Margaret Marshall, M.D.Encinitas, CA 920241639170475
Common questions
What is Steven J. Portouw, M.D.'s NPI number?
Steven J. Portouw, M.D.'s National Provider Identifier (NPI) is 1659371995, issued on Jul 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Steven J. Portouw, M.D. located?
The NPPES record lists a practice address at 354 Santa FE Dr, Encinitas, CA, 92024. Phone: (760) 230-2251. Providers update this record themselves, so call before visiting.
How can I verify Steven J. Portouw, M.D.'s license?
NPPES lists California license number G85996, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steven J. Portouw, M.D. prescribe under Medicare Part D?
In 2024, Steven J. Portouw, M.D. had 122 Medicare Part D claims for 76 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.