Roy Orden, MD
NPI 1861781056 · Allergy Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Orden, MD is a Allergy Physician provider in Walnut Creek, CA (NPI 1861781056).
Provider details
- NPI number
- 1861781056
- Entity type
- Individual
- Primary specialty
- Allergy PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A141478 (CA)
Specialties & taxonomies
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
15 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
3,034 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 | 2,120 | $5 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 192 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 138 | $109 |
| Professional Service for Multiple Injections of Allergen95117 | 136 | $17 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 123 | $19 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 74 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 114 | 39 |
| Ipratropium Bromide | 80 | 32 |
| Azelastine Hcl | 67 | 19 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 53 | 12 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 36 | 21 |
| Tiotropium Bromidebrand: Spiriva Respimat | 30 | — |
| Epinephrine | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,281 across 85 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
- 2011-03-29
- Last updated
- 2024-12-02
- Certified
- 2024-12-02
Frequently asked questions
- What is Roy Orden's NPI number?
- Roy Orden's National Provider Identifier (NPI) is 1861781056, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Orden's specialty?
- Roy Orden is listed in the NPPES registry with a primary specialty of Allergy Physician (Allopathic & Osteopathic Physicians).
- Where is Roy Orden located?
- Roy Orden's practice location on file with NPPES is 370 N Wiget Ln Ste 210, Walnut Creek, CA 94598-2452.
- What is Roy Orden's phone number?
- The practice phone number listed in the NPPES registry for Roy Orden is (925) 935-6252.
- Does Roy Orden accept Medicare?
- Roy Orden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Orden's NPI active?
- Yes — Roy Orden's NPI (1861781056) is active in the NPPES registry as of the last update on 2024-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.