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STEVEN BARRY MACHTINGER MD
NPI 1093719437
Pediatrics - Pediatric Allergy/Immunology in San Francisco, CA

Active since June 13, 2005PECOS EnrolledAccepts Medicare Assignment
450 SUTTER ST RM 933, SAN FRANCISCO, CA 94108(415) 362-5443 Get Directions Write a Review

NPPES record last updated: December 12, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 12, 2025, Apr 9, 2024, Nov 8, 2021 (3 updates tracked since 2021).

About Steven Barry Machtinger Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

STEVEN BARRY MACHTINGER MD (NPI 1093719437) is an individual pediatric allergy/immunology provider in San Francisco, California, licensed in California (G42041) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Pittsburgh School Of Medicine (1977).

NPPES Registry Identity

NPI1093719437
Entity TypeIndividualMale
Primary Taxonomy2080P0201X
Provider Legal NameSTEVEN BARRY MACHTINGERCredential: MD
Location Address450 SUTTER ST RM 933San Francisco, CA 94108-3997
Mailing Address725 Welch RdPalo Alto, CA 94304-1601 · (650) 497-8000
Phone(415) 362-5443
Sole ProprietorYes
Medical School CMSUniversity Of Pittsburgh School Of MedicineGraduated 1977
Enumeration DateJune 13, 2005
Last NPPES UpdateDecember 12, 20253 updates tracked since enumeration
NPPES CertifiedDecember 12, 2025
✔ NPI 1093719437 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPediatrics · Pediatric Allergy/ImmunologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0201X
License✔ Licensed in CA · G42041
Definition
A pediatrician who specializes in the diagnosis and treatment of allergies, allergic reactions, and immunologic diseases in children.
Also ListedAllergy & ImmunologyTaxonomy 207K00000X · License G42041 (CA)
Also ListedPediatricsTaxonomy 208000000X · License G42041 (CA)
450 SUTTER ST RM 933, San Francisco, CA 94108
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1725 Welch RdPalo Alto, CA 94304-1601 · Phone (650) 497-8000
Location 2100 SOUTH ELLSWORTH AVENUE SUITE 707SAN MATEO, CA 94401-3927 · Phone (650) 696-8230 · Fax (650) 696-8238

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Steven Barry Machtinger Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6800896366
PECOS Enrollment IDI20070105000410
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Test for allergy using allergenic extract 95004
An allergy test with allergenic extract is a diagnostic method to identify substances causing allergic reactions. Small amounts of common allergens are introduced to your body, usually through skin pricks or blood tests. Your body's response helps determine your allergies.
903 services13 patients
Professional service for preparation and provision of 1 or more antigens 95165
This service involves the creation and supply of antigens, substances that stimulate your immune system to fight diseases. These antigens can be used in vaccines or allergy tests to help your body build defenses against specific health threats.
600 services28 patients
Professional service for multiple injections of allergen 95117
The professional service for multiple injections of allergens involves administering small doses of specific allergens into your body. This is done to help your immune system become less sensitive to them, reducing your allergic reaction over time. It's a safe, effective way to manage allergies.
207 services17 patients
Professional service for single injection of allergen 95115
A single allergen injection is a procedure where a small amount of a specific allergen is injected into your body. This is done to test your body's reaction to the allergen or to help your immune system become less sensitive to it, reducing allergic symptoms.
206 services18 patients
Injection of drug or substance under skin or into muscle 96372
This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.
200 services13 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
85 services58 patients

Other Providers at the Same Location NPPES 13

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. BRIAN EDWARD SCHINDLER MD
Otolaryngology
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
MS. KRISTEN LEE BOND CCC-SLP
Speech-Language Pathologist
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 839-8639
HANNAH ROSE TOROK AUD, CCC-A
Audiologist
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
DR. JACOB JOHNSON MD
Otolaryngology
450 SUTTER ST RM 933, STE 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
DR. DAVID NORMAN SCHINDLER MD
Otolaryngology
450 SUTTER ST RM 933, STE 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
MR. AASIF ABDULQADER KAZI M.D.
Otolaryngology
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
DR. CONNY LU MD
Pediatrics
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443
DR. OPAL KAMDAR GUPTA MD
Allergy & Immunology
450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-5443

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Steven Machtinger's NPI number?

The NPI number for Steven Machtinger is 1093719437. It was assigned to this individual provider in the NPPES registry on June 13, 2005.

Where is Steven Machtinger located?

Steven Machtinger practices at 450 Sutter St Rm 933, San Francisco, CA 94108. The listed phone number is (415) 362-5443.

What is Steven Machtinger's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Allergy/Immunology, with taxonomy code 2080P0201X.

Is Steven Machtinger enrolled in Medicare?

Yes. Steven Machtinger is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Steven Machtinger was last updated on December 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.