DR. RONALD A. SIMON (M.D.) – Allergy & Immunology Physician, NPI 1255304622
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
521 ALLERGY/IMMUNOLOGY in CA
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Provider Addresses for DR. RONALD A. SIMON (M.D.)
10790, Rancho Bernardo Road, San Diego County, California, 92127, United States
SAN DIEGO, CA 921275705
Phone: (858) 764-9010
Fax: (858) 764-9011
Type: Mailing
Scripps Clinic - Carmel Valley, 3811, Valley Centre Drive, San Diego, San Diego County, California, 92130, United States
SAN DIEGO, CA 92130
Phone: (858) 764-9010
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 50 Open Payments records for all available years, with a total value of $1,394.
Total Amount is formed as General ($1,394) + Research ($0) + Ownership ($0) = $1,394.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: Genentech, Inc. ($283).
Total Amount
$1,394
General + Research + Ownership
Payments
50
Total payment records
General Amount
$1,394
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Genentech, Inc. | $283 |
| GlaxoSmithKline, LLC. | $227 |
| Genentech USA, Inc. | $226 |
| GENZYME CORPORATION | $176 |
| PFIZER INC. | $149 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2008-12-08
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20081208000771 | I | Allergy/Immunology | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J2357 | Injection, omalizumab, 5 mg | 3,093 | 15 | $0 |
| 95004 | Test for allergy using allergenic extract | 361 | 11 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 141 | 32 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 64 | 51 | $0 |
| 95115 | Professional service for single injection of allergen | 38 | 14 | $0 |
Insurance plans in this area (ZIP 92127)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ALLERGY/IMMUNOLOGY | CA | 95004 | Injection of allergenic extracts into skin, accessed through the skin | 1111 | 39 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| N E U R O L O G Y | CA | |
| - | CA | |
| Family Practice | CA | |
| - | CA | |
| Internal Medicine | CA | |
| Emergency Medicine | CA | |
| Physician Assistant | CA | |
| - | CA | |
| Cardiovascular Disease (Cardiology), Internal Medicine | CA | |
| - | CA |
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