Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gregory Krastein, MD

Individual provider Nephrology Physician · NPI 1942358759

Gregory Krastein, MD is an Internal Medicine in Oxnard, California. Graduated from George Washington University School of Medicine in 1990, 36 years ago. Practices with Southern California Permanente Medical Group, an 11,242-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
36
Trained at
George Washington University School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2103 E Gonzales Rd
Oxnard, CA 93036-3757
Phone: (805) 822-4595
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 19836 Ventura Blvd Suite C, Woodland Hills, CA 91364 — (805) 822-4595

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence G70211 (CA)

Record details

NPI number1942358759
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 8, 2007
Last updated in NPPESFebruary 21, 2023
Certification dateFebruary 14, 2023
Mailing address317 W Ventura Blvd # 1050, Camarillo, CA 93010-9134

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolGEORGE WASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice Southern California Permanente Medical Group — 11242 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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