MICHAEL YAO-JEN CHANG (D.O.) – Pain Medicine (Physical Medicine & Rehabilitation) Physician, NPI 1205934262
Pain Medicine (Physical Medicine & Rehabilitation) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,149 PHYSICAL MEDICINE AND REHABILITATION in CA
Provider Addresses for MICHAEL YAO-JEN CHANG (D.O.)
101 Sand Creek Rd Ste B
Brentwood, CA 945132540
Phone: (925) 939-8585
Type: Location
101 Sand Creek Rd Ste A
Brentwood, CA 945132539
Phone: (925) 939-8585
Type: Location
PO BOX 31396
WALNUT CREEK, CA 945988396
Phone: (925) 939-8585
Fax: (925) 933-2709
Type: Mailing
Orthopaedic Center, 2405, Shadelands Drive, Shadelands Business Park, Walnut Creek, Contra Costa County, California, 95498, United States
WALNUT CREEK, CA 945982444
Phone: (925) 939-8585
Fax: (925) 933-2709
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 8 Open Payments records for all available years, with a total value of $583.
Total Amount is formed as General ($583) + Research ($0) + Ownership ($0) = $583.
Last reported payment date: 2024-02-29 • Largest payer in this snapshot: Saluda Medical Americas, Inc. ($273).
Total Amount
$583
General + Research + Ownership
Payments
8
Total payment records
General Amount
$583
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-02-29
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Saluda Medical Americas, Inc. | $273 |
| Vertos Medical, Inc. | $150 |
| Nevro Corp. | $139 |
| SI-BONE, 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: 2007-07-03
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 |
|---|---|---|---|---|
| I20070703000627 | I | Physical Medicine And Rehabilitation | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,030 | 542 | $0 |
| 64483 | Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level | 419 | 326 | $0 |
| 95886 | Needle measurement of electrical activity in arm or leg muscles, complete study | 342 | 167 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 298 | 298 | $0 |
| J3301 | Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 217 | 38 | $0 |
Insurance plans in this area (ZIP 94513)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Orthopedic Surgery | CA | |
| - | CA | |
| Physical Therapist In Private Practice | CA | |
| Physician Assistant | CA | |
| Osteopathic Manipulative Medicine, Family Practice, Sports Medicine | CA | |
| Hand Surgery, Orthopedic Surgery | CA | |
| Orthopedic Surgery | CA | |
| Occupational Therapist In Private Practice | CA | |
| Nurse Practitioner | CA |
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