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

Karen Tinder, NP

Individual provider Family Nurse Practitioner · NPI 1225442080

Karen Tinder, NP is a Nurse Practitioner in Walnut Creek, California. Qualified in 1998, 28 years ago. Practices with John Muir Physician Network, a 486-clinician group, works from 6 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
28
Licensed in
CA
In the registry since
2014
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone: (925) 945-6600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (5)

  • 2425 East St, Concord, CA 94520 — (925) 682-9232
  • 2700 Grant St Ste 200, Concord, CA 94520-2270 — (925) 674-2609
  • 2425 East St, Concord, CA 94520 — (925) 682-9232
  • 3466 Mt Diablo Blvd Ste C104, Lafayette, CA 94549 — (925) 674-2609
  • 1450 Treat Blvd # 160, Walnut Creek, CA 94597-2168 — (925) 296-9000

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 488386 (CA)

Record details

NPI number1225442080
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedJune 19, 2014
Last updated in NPPESFebruary 11, 2025
Certification dateFebruary 11, 2025

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice John Muir Physician Network — 486 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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