Jeff Borenstein, MD
NPI 1326260522 · Internal Medicine Physician · Porter Ranch, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jeff Borenstein, MD is a Internal Medicine Physician provider in Porter Ranch, CA (NPI 1326260522).
Provider details
- NPI number
- 1326260522
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G075307 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
556 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 175 | $83 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 143 | $57 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 63 | $17 |
| Administration of Pneumococcal VaccineG0009 | 44 | $34 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 40 | $124 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 234 | 72 |
| Amlodipine Besylate | 103 | 30 |
| Alendronate Sodium | 78 | 26 |
| Rosuvastatin Calcium | 77 | 25 |
| Levothyroxine Sodium | 64 | 18 |
| Sertraline Hcl | 64 | 15 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-03
- Last updated
- 2020-01-07
- Certified
- 2020-01-07
Frequently asked questions
- What is Jeff Borenstein's NPI number?
- Jeff Borenstein's National Provider Identifier (NPI) is 1326260522, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeff Borenstein's specialty?
- Jeff Borenstein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jeff Borenstein located?
- Jeff Borenstein's practice location on file with NPPES is 19950 Rinaldi St Ste 300, Porter Ranch, CA 91326-4141.
- What is Jeff Borenstein's phone number?
- The practice phone number listed in the NPPES registry for Jeff Borenstein is (818) 271-2400.
- Does Jeff Borenstein accept Medicare?
- Jeff Borenstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jeff Borenstein's NPI active?
- Yes — Jeff Borenstein's NPI (1326260522) is active in the NPPES registry as of the last update on 2020-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.