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

Steven Machtinger MD & Associates Inc

Organization Allergy & Immunology Physician · NPI 1427288133

Steven Machtinger MD & Associates Inc is an Allergy & Immunology Physician in San Mateo, California. Registered with an NPI since 2009.

In the registry since
2009
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

100 S Ellsworth Ave Ste 700
San Mateo, CA 94401-3939
Phone: (650) 696-8230
Fax: (650) 696-8238
Show map & directions

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

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X

Record details

NPI number1427288133
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Steven Machtinger Md — Owner Physician President · (650) 696-8230
NPI enumeratedJuly 16, 2009
Last updated in NPPESApril 20, 2023
Certification dateApril 20, 2023
Mailing address100 S Ellsworth Ave, Suite 700, San Mateo, CA 94401-3939

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