Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Derek Lyle Foerschler, DO

Individual provider Anesthesiology Physician · NPI 1336335942

Derek Lyle Foerschler, DO is an Anesthesiology Physician in San Diego, California. Works from 5 locations. Licensed in California, Hawaii and Pennsylvania.

Licensed in
CA, HI, PA
In the registry since
2007
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

200 W Arbor Dr
San Diego, CA 92103-9000
Phone: (800) 926-8273
Fax: (888) 539-8781
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 9300 Campus Point Dr, La Jolla, CA 92037-1300 — (800) 926-8273
  • 6655 Alvarado Rd, San Diego, CA 92120-5208 — (800) 926-8273
  • Box 63036, Kaneohe Bay, HI 96863-3036 — (808) 257-9991
  • 1 Jarrett White Rd, Tripler Army Medical Center, HI 96859-5001 — (808) 433-6661

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 20A18793 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence DOS2479 (HI)
Anesthesiology Physician Taxonomy 207L00000X · Licence OS021636 (PA)

Record details

NPI number1336335942
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 18, 2007
Last updated in NPPESOctober 6, 2026
Certification dateOctober 6, 2026

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients100
Services billed 119 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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