Jeff Edward Borenstein, MD
Internal Medicine Physician · Porter Ranch, CA
Jeff Edward Borenstein, MD is an internal medicine physician with a practice address in Porter Ranch, California, and NPI 1326260522, issued on May 3, 2007. Check the license (California G075307, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeff Edward Borenstein
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G075307 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19950 Rinaldi St Ste 300, Porter Ranch, CA 91326
- Phone
- (818) 271-2400
- Enumerated
- May 3, 2007
- Record last updated
- Jan 7, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (818) 271-2401
- Medicare enrollment
- Enrolled (PECOS I20100331000342); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 19950 Rinaldi St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vindeep BhandariInternal Medicine Physician1164832069
- Helen Huang, M.D.Cardiovascular Disease Physician1588921498
- Kevork Khadarian, MDGastroenterology Physician1245734789
- Raghu Konanur VenkataramNephrology Physician1447538079
- Jelena MaletkovicEndocrinology, Diabetes & Metabolism Physician1093087504
- Levon Mesropyan, M.D.Pediatrics Physician1205299302
Verify Jeff Edward Borenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G075307Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,907 Medicare Part D claims for 249 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
Most prescribed
- Atorvastatin Calcium234 claims
- Amlodipine Besylate103 claims
- Alendronate Sodium78 claims
- Rosuvastatin Calcium77 claims
- Levothyroxine Sodium64 claims
- Sertraline Hcl64 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
- The Regents OF The University OF CaliforniaPorter Ranch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeff Edward Borenstein among 17,696 internal medicine physician records in California
Jeff Edward Borenstein, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1991 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 internal medicine physician records list a practice address in Porter Ranch
They are 13 of the 275 NPPES records with a practice address in Porter Ranch, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Porter Ranch → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nona Ahankoob, M.D.Porter Ranch, CA 913261790078228
- Vindeep BhandariPorter Ranch, CA 913261164832069
- Michelle Emi, M.D.Porter Ranch, CA 913261962755298
- Richard Landers, MDPorter Ranch, CA 913261679689921
- Sam Mubara, MDPorter Ranch, CA 913261669066759
- Michael Nelson, MD.Porter Ranch, CA 913261346254968
- Aswin Nukala, M.D.Porter Ranch, CA 913261093155350
- Fredrick Russo, MD.Porter Ranch, CA 913261457370074
Common questions
What is Jeff Edward Borenstein, MD's NPI number?
Jeff Edward Borenstein, MD's National Provider Identifier (NPI) is 1326260522, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeff Edward Borenstein, MD located?
The NPPES record lists a practice address at 19950 Rinaldi St Ste 300, Porter Ranch, CA, 91326. Phone: (818) 271-2400. Providers update this record themselves, so call before visiting.
How can I verify Jeff Edward Borenstein, MD's license?
NPPES lists California license number G075307, 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 Jeff Edward Borenstein, MD prescribe under Medicare Part D?
In 2024, Jeff Edward Borenstein, MD had 1,907 Medicare Part D claims for 249 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.