Robert Onder, M.D.
NPI 1164533295 · Allergy Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Onder, M.D. is a Allergy Physician provider in Saint Louis, MO (NPI 1164533295).
Provider details
- NPI number
- 1164533295
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R9H42 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
7,303 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) |
|---|---|---|
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 4,783 | $13 |
| Professional Service for Multiple Injections of Allergen95117 | 2,297 | $11 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 130 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 51 | $114 |
| Test to Measure Rate of Airflow94375 | 22 | $35 |
| Administration and Interpretation of Patient-Focused Health Risk Assessment96160 | 20 | $3 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 85 | 31 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 80 | 37 |
| Fluticasone Propionate | 73 | 27 |
| Azelastine Hcl | 71 | 25 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 49 | 11 |
| Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol | 46 | 15 |
| Fluticasone/Umeclidin/Vilanter |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$483 across 30 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
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2011-10-18
Frequently asked questions
- What is Robert Onder's NPI number?
- Robert Onder's National Provider Identifier (NPI) is 1164533295, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Onder's specialty?
- Robert Onder is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Onder located?
- Robert Onder's practice location on file with NPPES is 711 Old Ballas Rd, Saint Louis, MO 63141-7051.
- What is Robert Onder's phone number?
- The practice phone number listed in the NPPES registry for Robert Onder is (314) 569-0510.
- Does Robert Onder accept Medicare?
- Robert Onder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Onder's NPI active?
- Yes — Robert Onder's NPI (1164533295) is active in the NPPES registry as of the last update on 2011-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.