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

Chad York Lewis, MD, MPH

Individual provider Internal Medicine Physician · NPI 1407424187

Chad York Lewis, MD, MPH is an Ophthalmology in Palo Alto, California. Qualified in 2021, 5 years ago. Practices with Stanford Health Care, a 3,085-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Iowa.

Years since qualifying
5
Licensed in
CA, IA
In the registry since
2021
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.

See every abbreviation used in this directory →

Practice location Address checks out

300 Pasteur Dr
Palo Alto, CA 94305-2200
Phone: (650) 723-4000
Show map & directions

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

Additional practice locations (1)

  • 200 Hawkins Dr, Iowa City, IA 52242-1009 — (319) 353-8585

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence A2029132 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence R-12259 (IA)
Ophthalmology Physician Taxonomy 207W00000X · Licence R-12259 (IA)

Record details

NPI number1407424187
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH
Sole proprietorNo
NPI enumeratedJune 17, 2021
Last updated in NPPESJuly 7, 2025
Certification dateJuly 7, 2025

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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