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

Dr. Stephen Edward Welter, MD

Individual provider Internal Medicine Physician · NPI 1801906136

Dr. Stephen Edward Welter, MD is an Internal Medicine Physician in San Rafael, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 Thorndale Drive Medical Clinic
San Rafael, CA 94903
Phone: (415) 492-2410
Fax: (415) 499-8395
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G37927 (CA)

Record details

NPI number1801906136
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 30, 2006
Last updated in NPPESApril 4, 2022
Certification dateApril 4, 2022
Mailing address16 Sutro Ct, Novato, CA 94947-2809

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