Physician Profile
Roy A. Orden, MD
Unclaimed ProfileAbout Dr. Orden
Roy A. Orden, MD is a healthcare provider in Walnut Creek, CA specializing in allergy. Roy trained at University of Washington School of Medicine, graduating in 2011. Roy is also listed as specializing in allergy & immunology. According to Medicare claims data, Roy cared for 468 Medicare patients across 3,034 services. The services billed most often include test for allergy using allergenic extract, injection of drug or substance under skin or into muscle, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (925) 935-6252
- Email not available
Practice Locations
370 N WIGET LN STE 210
Walnut Creek, CA 94598
Procedures Most Often Billed to Medicare
3,034 services · 468 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
2,120 | More often than most peers in Allergy |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
192 | More often than most peers in Allergy |
| Professional service for multiple injections of allergen | Treatment | 95117 |
136 | Less often than most peers in Allergy |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
123 | Less often than most peers in Allergy |
| Administration and interpretation of patient-focused health risk assessment | Treatment | 96160 |
69 | More often than most peers in Allergy |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
67 | As often as other peers in Allergy |
| Test to measure the level of nitric oxide gas | Treatment | 95012 |
61 | More often than most peers in Allergy |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
138 | More often than most peers in Allergy |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
74 | More than most peers in Allergy |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
30 | As often as other peers in Allergy |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other allergy specialists at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 18 related providers in 4 groups
Trained at University of Washington School of Medicine 1
Other providers in the same specialty who trained at the same institution.
Class of 2011 at University of Washington School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Orden specialize in?
Dr. Orden is an allergy in Walnut Creek, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Orden located?
Dr. Orden is listed at 370 N Wiget Ln Ste 210, Walnut Creek, CA 94598. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Orden's phone number?
The number on file is (925) 935-6252. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Orden's NPI number?
Dr. Orden's National Provider Identifier is 1861781056. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Orden go to medical school?
Dr. Orden attended University of Washington School of Medicine, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Orden been practicing?
Dr. Orden has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Orden do most often?
According to Medicare billing data, Dr. Orden provides treatments such as test for allergy using allergenic extract and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Orden confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Orden. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.