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

Dr. Gregg Philip Hartman, MD

Individual provider Orthopaedic Surgery Physician · NPI 1336105238

Dr. Gregg Philip Hartman, MD is a Sports Medicine in Simi Valley, California. Graduated from Tulane University School of Medicine in 1992, 34 years ago. Practices with Ventura Orthopedics Medical Group Inc, a 78-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Tulane University School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2525 Erringer Rd
Simi Valley, CA 93065-2352
Phone: (805) 527-1404
Fax: (805) 527-5246
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 137 E Thousand Oaks Blvd, Thousand Oaks, CA 91360-5707 — (805) 379-4574

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence A61757 (CA)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence A61757 (CA)

Record details

NPI number1336105238
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 21, 2006
Last updated in NPPESJuly 14, 2025
Certification dateJuly 14, 2025

Medicare enrollment

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

Medicare specialtySPORTS MEDICINE
Also practisesORTHOPEDIC SURGERY
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Ventura Orthopedics Medical Group Inc — 78 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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