Individual Healthcare Provider
Steven Barry Machtinger, MD
Provider's NPPES record last updated: December 12, 2025
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1093719437
- Primary Specialty
- Pediatrics — Pediatric Allergy/Immunology
- Practice Location
- San Francisco, California
- Sole Proprietor
- Yes
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 18, 2026, 10:02 AM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Pediatrics
Pediatric Allergy/Immunology
Allopathic & Osteopathic Physicians
A pediatrician who specializes in the diagnosis and treatment of allergies, allergic reactions, and immunologic diseases in children.
Taxonomy code 2080P0201X Pediatrics
Allopathic & Osteopathic Physicians
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Taxonomy code 208000000XAllergy & Immunology
Allopathic & Osteopathic Physicians
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
Taxonomy code 207K00000X
Provider-Reported License Information
- Pediatrics (California)
- G42041
- Pediatrics (California)
- G42041
- Allergy & Immunology (California)
- G42041
Practice Locations
Practice Location
450 Sutter St Rm 933
San Francisco, California 94108-3997
Phone: (415) 362-5443
Additional Practice Location
725 Welch Rd
Palo Alto, California 94304-1601
Phone: (650) 497-8000
Additional Practice Location
100 South Ellsworth Avenue Suite 707
San Mateo, California 94401-3927
Phone: (650) 696-8230
Fax: (650) 696-8238
Record Information
- Enumeration Date
- June 13, 2005
- Provider's NPPES Record Last Updated
- December 12, 2025
- Certification Date
- December 12, 2025
- NPISignal NPPES Dataset
- August 2026
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