DR. WILLIAM ARMSTRONG (MD) – Otolaryngology Physician, NPI 1063592145
Otolaryngology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,359 OTOLARYNGOLOGY in CA
Provider Addresses for DR. WILLIAM ARMSTRONG (MD)
UNIVERSITY HEAD & NECK SURGEON
PO BOX 513700
LOS ANGELES, CA 900513700
Phone: (714) 456-2986
Type: Mailing
101 THE CITY DR S
ORANGE, CA 928683201
Phone: (714) 880-7812
Type: Location
200 S MANCHESTER AVE STE 300
ORANGE, CA 928683219
Phone: (714) 456-2986
Type: Mailing
UCI Medical Center, 101, The City Drive South, Orange, Orange County, California, 92868, United States
101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Phone: (714) 456-2986
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $62.
Total Amount is formed as General ($62) + Research ($0) + Ownership ($0) = $62.
Last reported payment date: 2024-10-02 • Largest payer in this snapshot: Medtronic, Inc. ($46).
Total Amount
$62
General + Research + Ownership
Payments
2
Total payment records
General Amount
$62
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-02
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $46 |
| Solventum Corporation | $16 |
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: 2008-03-27
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 |
|---|---|---|---|---|
| I20080327000591 | I | Otolaryngology | 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 |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 252 | 161 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 49 | 49 | $0 |
| 31575 | Diagnostic exam of voice box using a flexible endoscope | 22 | 20 | $0 |
| 76536 | Ultrasound scan of head and neck soft tissue | 18 | 18 | $0 |
| 10005 | Fine needle aspiration biopsy using ultrasound guidance, first growth | 17 | 16 | $0 |
Insurance plans in this area (ZIP 90051)
Loading plans...
Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OTOLARYNGOLOGY | CA | 76942 | Ultrasonic guidance imaging supervision and interpretation for insertion of needle | 26 | 21 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O T O L A R Y N G O L O G Y | CA | |
| Qualified Audiologist | OR | |
| O T O L A R Y N G O L O G Y | CA | |
| O T O L A R Y N G O L O G Y | CA | |
| Qualified Audiologist | CA | |
| O T O L A R Y N G O L O G Y | CA | |
| O T O L A R Y N G O L O G Y | AR | |
| O T O L A R Y N G O L O G Y | TN | |
| O T O L A R Y N G O L O G Y | CA | |
| Physician Assistant | CA |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.