Steven Machtinger, MD
NPI 1093719437 · Pediatric Allergy/Immunology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Machtinger, MD is a Pediatric Allergy/Immunology Physician provider in San Francisco, CA (NPI 1093719437).
Provider details
- NPI number
- 1093719437
- Entity type
- Individual
- Primary specialty
- Pediatric Allergy/Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G42041 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
21 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,414 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 903 | $5 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 600 | $19 |
| Professional Service for Multiple Injections of Allergen95117 | 207 | $17 |
| Professional Service for Single Injection of Allergen95115 | 206 | $14 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 200 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 85 | $109 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Epinephrine | 30 | 24 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 25 | — |
| Ipratropium Bromide | 24 | 13 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 21 | 17 |
| Montelukast Sodium | 21 | — |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 20 | — |
| Budesonide/Formoterol Fumarate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$529 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 725 Welch RdPalo Alto, CA 94304-1601Phone: (650) 497-8000
- 100 South Ellsworth Avenue Suite 707San Mateo, CA 94401-3927Phone: (650) 696-8230Fax: (650) 696-8238
Registry dates
- Enumerated
- 2005-06-13
- Last updated
- 2025-12-12
- Certified
- 2025-12-12
Frequently asked questions
- What is Steven Machtinger's NPI number?
- Steven Machtinger's National Provider Identifier (NPI) is 1093719437, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Machtinger's specialty?
- Steven Machtinger is listed in the NPPES registry with a primary specialty of Pediatric Allergy/Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Machtinger located?
- Steven Machtinger's practice location on file with NPPES is 450 Sutter St Rm 933, San Francisco, CA 94108-3997.
- What is Steven Machtinger's phone number?
- The practice phone number listed in the NPPES registry for Steven Machtinger is (415) 362-5443.
- Does Steven Machtinger accept Medicare?
- Steven Machtinger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Machtinger's NPI active?
- Yes — Steven Machtinger's NPI (1093719437) is active in the NPPES registry as of the last update on 2025-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.