DR. YOU-JEN CHOU (MD) – Internal Medicine Physician, NPI 1104070887
Internal Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
1,981 GASTROENTEROLOGY in CA
Provider Addresses for DR. YOU-JEN CHOU (MD)
2100 Main St Ste 300
Huntington Beach, CA 926482489
Phone: (714) 252-9415
Fax: (714) 963-8407
Type: Location
Kaiser Permanente Baldwin Park Medical Center, 1011, Baldwin Park Boulevard, Baldwin Park, Los Angeles County, California, 91706, United States
BALDWIN PARK, CA 917065806
Phone: (626) 851-1011
Type: Mailing
PO BOX 512185
LOS ANGELES, CA 900510185
Phone:
Type: Mailing
1000 FIVEPOINT
IRVINE, CA 926182621
Phone: (800) 826-4673
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 78 Open Payments records for all available years, with a total value of $1,896.
Total Amount is formed as General ($1,896) + Research ($0) + Ownership ($0) = $1,896.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: ABBVIE INC. ($689).
Total Amount
$1,896
General + Research + Ownership
Payments
78
Total payment records
General Amount
$1,896
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2012-01-09
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 |
|---|---|---|---|---|
| I20120109000079 | I | Gastroenterology | 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 |
|---|---|---|---|---|
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 77 | 73 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 72 | 47 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 58 | 58 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 43 | 43 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 35 | 30 | $0 |
Insurance plans in this area (ZIP 92648)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CT | |
| Diagnostic Radiology | CA | |
| Cardiovascular Disease (Cardiology) | MO | |
| General Practice, Preventive Medicine | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| Certified Registered Nurse Anesthetist (Crna) | CA |
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