Physician Profile
Unclaimed ProfileAbout HARRIS
William G Harris, MD practices allergy/immunology in Orange, CA. William is also listed as specializing in allergy & immunology. According to Medicare claims data, William cared for 153 Medicare patients across 2,328 services.
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
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (714) 771-7994
- Email not available
Practice Locations
1140 W LA VETA AVE STE 850
Orange, CA 92868
Procedures Most Often Billed to Medicare
2,328 services · 153 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
1,044 |
| Test for allergy using allergenic extract | Treatment | 95004 |
785 |
| Professional service for multiple injections of allergen | Treatment | 95117 |
290 |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
143 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
41 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
25 |
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.
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.
Other allergy/immunology specialists in Orange 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1987 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Professional service for preparation and provision of 1 or more antigens 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Harris's specialty?
Dr. Harris is an allergy/immunology in Orange, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “ALLERGY/IMMUNOLOGY”.
NPI registry
Where can I find Dr. Harris?
Dr. Harris is listed at 1140 W LA VETA AVE STE 850, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Harris?
The number on file is (714) 771-7994. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Harris's NPI number?
Dr. Harris's National Provider Identifier is 1922065788. 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
What is Dr. Harris's medical education?
Dr. Harris attended Other, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Harris been practicing?
Dr. Harris has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Harris known for?
According to Medicare billing data, Dr. Harris provides treatments such as professional service for preparation and provision of 1 or more antigens and test for allergy using allergenic extract, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Harris confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Harris. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.