DR. WILLIAM HOWARD ANDERSON (M.D.) – Allergy & Immunology Physician, NPI 1629031752
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
94 ALLERGY/IMMUNOLOGY in WA
Provider Addresses for DR. WILLIAM HOWARD ANDERSON (M.D.)
1115 SE 164TH AVE DEPT 358
VANCOUVER, WA 986838004
Phone: (360) 729-1462
Fax: (360) 729-3104
Type: Mailing
4545 CORDATA PKWY STE 1C
BELLINGHAM, WA 98226
Phone: (360) 738-2200
Fax: (360) 752-5689
Type: Location
4545 Cordata Pkwy Ste 1C
Bellingham, WA 98226
Phone: (360) 738-2200
Fax: (360) 752-5689
Type: Location
9709 3rd Ave NE
Seattle, WA 981152062
Phone: (206) 329-1760
Type: Location
PO BOX 5127
EVERETT, WA 982065127
Phone: (206) 860-5414
Fax: (206) 720-8462
Type: Mailing
3130 ELLIS ST
BELLINGHAM, WA 982251904
Phone: (425) 339-5412
Fax: (360) 363-4750
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2005-05-02
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 |
|---|---|---|---|---|
| I20050502000310 | I | Allergy/Immunology | WA | 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 | 147 | 12 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 39 | 28 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 32 | 30 | $0 |
| 94375 | Test to measure rate of airflow | 19 | 19 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 11 | 11 | $0 |
Insurance plans in this area (ZIP 98683)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ALLERGY/IMMUNOLOGY | WA | 95004 | Injection of allergenic extracts into skin, accessed through the skin | 279 | 22 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | OR | |
| - | WA | |
| - | WA | |
| P A T H O L O G Y | TN | |
| Nurse Practitioner | WA | |
| Diagnostic Radiology | WA | |
| Nurse Practitioner | WA | |
| Physical Therapist In Private Practice | WA | |
| O T O L A R Y N G O L O G Y | WA | |
| Emergency Medicine | OR |
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