Jason Portillo, M.D.
Hospitalist Physician · Harbor City, CA
Jason Portillo, M.D. is a hospitalist physician with a practice address in Harbor City, California, and NPI 1427329176, issued on Jan 25, 2012. Check the license (California A125714, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jason Portillo
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A125714 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25825 Vermont Ave, Harbor City, CA 90710
- Phone
- (310) 257-6413
- Enumerated
- Jan 25, 2012
- Record last updated
- Nov 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 517-3094
- Medicare enrollment
- Enrolled (PECOS I20150119000558); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 25825 Vermont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christiana Abraham, NPFamily Nurse Practitioner1447855911
- Kamren AckermanPhysical Therapist1104412352
- Bradley Ackerson, MDPediatric Infectious Diseases Physician1255490918
- Yossef Aelony, MDPulmonary Disease Physician1619178597
- Lisa Agustines, MDObstetrics & Gynecology Physician1750452736
Verify Jason Portillo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A125714Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average hospitalist physician in 2024
426 Medicare Part D claims for 155 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Furosemide20 claims
- Cefpodoxime Proxetil18 claims
- Naloxone Hcl16 claims
- Ondansetron Odt16 claims
- Amlodipine Besylate14 claims
- Prednisone14 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSan Marcos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jason Portillo among 3,099 hospitalist physician records in California
Jason Portillo, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 51% of them.
- NPI issued2012 · 51% of these records are older, 44% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2011 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Harbor City → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Charles Bui, M.D.Harbor City, CA 907101013100338
- James Chou, M.D.Harbor City, CA 907101396916003
- Ali Ezzat, MDHarbor City, CA 907101932781259
- Hector Miguel, M.D.Harbor City, CA 907101457618969
- Carla Toms, MDHarbor City, CA 907101730258336
- Shakir UllahHarbor City, CA 907101679149876
- Gunjot Kaur, MDCerritos, CA 907031881155711
- Moustafa Aboshady, M.D.Los Alamitos, CA 907201003127655
Common questions
What is Jason Portillo, M.D.'s NPI number?
Jason Portillo, M.D.'s National Provider Identifier (NPI) is 1427329176, issued on Jan 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Jason Portillo, M.D. located?
The NPPES record lists a practice address at 25825 Vermont Ave, Harbor City, CA, 90710. Phone: (310) 257-6413. Providers update this record themselves, so call before visiting.
How can I verify Jason Portillo, M.D.'s license?
NPPES lists California license number A125714, 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 Jason Portillo, M.D. prescribe under Medicare Part D?
In 2024, Jason Portillo, M.D. had 426 Medicare Part D claims for 155 beneficiaries; the average among hospitalist physician prescribers was 521. 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.