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

Gregory L Knutzen, NP

Individual provider Acute Care Nurse Practitioner · NPI 1871554170

Gregory L Knutzen, NP is a Nurse Practitioner in Colton, California. Qualified in 1999, 27 years ago. Practices with City of Hope Medical Foundation, a 959-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

See every abbreviation used in this directory →

Practice location Address checks out

400 N Pepper Ave
Colton, CA 92324-1801
Phone: (909) 580-2775
Fax: (909) 580-2115
Show map & directions

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

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence 349887 (CA)
Nurse Practitioner Taxonomy 363L00000X · Licence 349887 (CA)

Record details

NPI number1871554170
Entity typeIndividual (Type 1)
GenderMale
Credentials NP
Sole proprietorYes
NPI enumeratedMarch 28, 2006
Last updated in NPPESNovember 9, 2020
Certification dateNovember 9, 2020
Mailing addressPo Box 512185, Los Angeles, CA 90051-0185

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice City Of Hope Medical Foundation — 959 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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