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

Karl Joshua Nimtz

Individual provider Emergency Medicine Physician · NPI 1417535600

Karl Joshua Nimtz is an Emergency Medicine in Walnut Creek, California. Graduated from Jefferson Medical College of Thomas Jefferson University in 2021, 5 years ago. Practices with Permanente Medical Group Inc, a 10,941-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
CA
In the registry since
2021
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Practice location Address checks out

1425 S Main St
Walnut Creek, CA 94596-5318
Phone: (925) 295-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4445 Magnolia Ave, Riverside, CA 92501-4135 — (951) 788-3000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A192169 (CA)

Record details

NPI number1417535600
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 30, 2021
Last updated in NPPESAugust 29, 2024
Certification dateAugust 29, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 2021 (5 years in practice)
Group practice Permanente Medical Group Inc — 10941 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Walnut Creek