MICHAEL T. MAI (MD) – Orthopaedic Surgery Physician, NPI 1124025598
Orthopaedic Surgery Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,024 ORTHOPEDIC SURGERY in CA
Provider Addresses for MICHAEL T. MAI (MD)
818 Magnolia Ave.
Corona, CA 92879
Phone: (951) 493-6930
Fax: (951) 272-4093
Type: Location
21634 RETREAT PKWY
CORONA, CA 928836100
Phone: (951) 493-6930
Fax: (951) 826-8136
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $76.
Total Amount is formed as General ($76) + Research ($0) + Ownership ($0) = $76.
Last reported payment date: 2024-03-28 • Largest payer in this snapshot: Bioventus LLC ($28).
Total Amount
$76
General + Research + Ownership
Payments
3
Total payment records
General Amount
$76
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-28
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Bioventus LLC | $28 |
| ATRICURE, INC. | $27 |
| Medtronic, Inc. | $21 |
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: 2008-03-11
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 |
|---|---|---|---|---|
| I20080311000263 | I | Orthopedic Surgery | 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 | 38 | 23 | $0 |
Insurance plans in this area (ZIP 92879)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| ORTHOPEDIC SURGERY | CA | 20610 | Aspiration and/or injection of large joint or joint capsule | 18 | 15 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | CA | |
| - | CA | |
| - | CA | |
| Internal Medicine | CA | |
| Dermatology, Micrographic Dermatologic Surgery (Mds) | CA | |
| Internal Medicine | CA | |
| Family Practice | CA | |
| Family Practice | CA | |
| Internal Medicine | CA | |
| Family Practice | CA |
Reviews
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