DR. ROBERT CHOU (M.D.) – Internal Medicine Physician, NPI 1639145931
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,245 INTERNAL MEDICINE in MD
Provider Addresses for DR. ROBERT CHOU (M.D.)
18, South Kingshighway Boulevard, City of Saint Louis, Missouri, 63108, United States
APT. 16L
SAINT LOUIS, MO 631081356
Phone: (314) 879-6250
Type: Mailing
610 DUTCHMANS LN
EASTON, MD 216013346
Phone: (410) 822-4000
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: 2023-11-22
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20080521000837 | I | Internal Medicine | MD | TBD |
| I20231122002489 | I | Internal Medicine | DC | 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 |
|---|---|---|---|---|
| 99305 | Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 63108)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine | DC | |
| Nurse Practitioner | MD | |
| Nurse Practitioner | MD | |
| Nurse Practitioner | NC | |
| Pulmonary Disease | DC | |
| Infectious Disease, Internal Medicine | VA | |
| Nurse Practitioner | DE | |
| Nurse Practitioner | MD | |
| - | MD | |
| Internal Medicine | VA |
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