DR. WILLIAM G HARRIS (MD) – Allergy & Immunology Physician, NPI 1922065788
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
521 ALLERGY/IMMUNOLOGY in CA
Provider Addresses for DR. WILLIAM G HARRIS (MD)
1140 W LA VETA AVE STE 850
ORANGE, CA 928684218
Phone: (714) 771-7994
Fax: (714) 744-4167
Type: Location
Box Street, Port Charlotte, Charlotte County, Florida, 33948, United States
CHARLOTTE, NC 282603725
Phone: (828) 575-2625
Fax: (828) 350-2174
Type: Mailing
DEPT. 453 PO BOX 1000
MEMPHIS, TN 381480001
Phone: (828) 575-2625
Fax: (828) 350-2174
Type: Mailing
Main International Group, 505, South Main Street, Pacific Park, Santa Ana, Orange County, California, 92701, United States
STE 250
ORANGE, CA 928684509
Phone: (714) 771-7994
Fax: (714) 744-4167
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 212 Open Payments records for all available years, with a total value of $4,503.
Total Amount is formed as General ($4,503) + Research ($0) + Ownership ($0) = $4,503.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: LEO Pharma Inc. ($520).
Total Amount
$4,503
General + Research + Ownership
Payments
212
Total payment records
General Amount
$4,503
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| LEO Pharma Inc. | $520 |
| CSL Behring | $510 |
| Takeda Pharmaceuticals U.S.A., Inc. | $456 |
| GlaxoSmithKline, LLC. | $305 |
| Genentech USA, Inc. | $206 |
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: 2004-04-21
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 |
|---|---|---|---|---|
| I20040421000651 | 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 | 1,227 | 18 | $0 |
| 95165 | Professional service for preparation and provision of 1 or more antigens | 799 | 38 | $0 |
| 95024 | Test for allergy using allergenic extract injected into skin | 232 | 18 | $0 |
| 95117 | Professional service for multiple injections of allergen | 224 | 34 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 55 | 41 | $0 |
Insurance plans in this area (ZIP 92868)
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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 | 773 | 12 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NC | |
| Physician Assistant | CA | |
| Allergy/Immunology, Hospitalist | 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 | NC | |
| Allergy/Immunology, Internal Medicine | CA | |
| A L L E R G Y/ I M M U N O L O G Y | TN | |
| Allergy/Immunology, Pediatric Medicine | NC | |
| A L L E R G Y/ I M M U N O L O G Y | CA | |
| Physician Assistant | CA |
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