MR. ROY ANTHONY ORDEN (MD) – Allergy Physician, NPI 1861781056
Allergy Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
525 ALLERGY/IMMUNOLOGY in CA
Provider Addresses for MR. ROY ANTHONY ORDEN (MD)
370 N WIGET LN STE 210
WALNUT CREEK, CA 945982452
Phone: (925) 935-6252
Fax: (925) 935-7611
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 183 Open Payments records for all available years, with a total value of $5,944.
Total Amount is formed as General ($5,944) + Research ($0) + Ownership ($0) = $5,944.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: GENZYME CORPORATION ($1,617).
Total Amount
$5,944
General + Research + Ownership
Payments
183
Total payment records
General Amount
$5,944
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
1
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GENZYME CORPORATION | $1,617 |
| AstraZeneca Pharmaceuticals LP | $791 |
| Pharming Healthcare, Inc. | $468 |
| GlaxoSmithKline, LLC. | $401 |
| kaleo, Inc. | $170 |
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: 2016-11-16
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20161116001581 | 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 |
|---|---|---|---|---|
| 95004 | Test for allergy using allergenic extract | 1,403 | 39 | $0 |
| 96372 | Injection of drug or substance under skin or into muscle | 208 | 12 | $0 |
| 95117 | Professional service for multiple injections of allergen | 168 | 14 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 152 | 98 | $0 |
| 95165 | Professional service for preparation and provision of 1 or more antigens | 114 | 14 | $0 |
Insurance plans in this area (ZIP 94598)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Physician Assistant | CA | |
| Allergy/Immunology, Internal Medicine | CA | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Allergy/Immunology, Internal Medicine | CA | |
| Physician Assistant | TX | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Physician Assistant | CA | |
| Pediatric Medicine, Allergy/Immunology | NC |
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