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

Cathy Lynn Riker, MD

Individual provider Internal Medicine Physician · NPI 1255448189

Cathy Lynn Riker, MD is a Rheumatology in Menlo Park, California. Graduated from Icahn School of Medicine at Mount Sinai in 1986, 40 years ago. Practices with University Healthcare Alliance, a 332-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
40
Trained at
Icahn School of Medicine at Mount Sinai
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

1300 Crane St
Menlo Park, CA 94025-4260
Phone: (650) 498-6500
Show map & directions

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

Additional practice locations (1)

  • Po Box 60000, San Francisco, CA 94160-0001 — (999) 999-9999

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence G74920 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence G74920 (CA)

Record details

NPI number1255448189
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2006
Last updated in NPPESApril 16, 2024
Certification dateApril 16, 2024

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 1986 (40 years in practice)
Group practice University Healthcare Alliance — 332 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Menlo Park