CHRISTINA ENNABI WALLER (DO) – Emergency Medicine Physician, NPI 1558789834
Emergency Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
4,051 EMERGENCY MEDICINE in TX
Provider Addresses for CHRISTINA ENNABI WALLER (DO)
777 PRESTON ST APT 34P
HOUSTON, TX 770021781
Phone: (909) 618-3924
Type: Mailing
4801 ALBERTA AVE
EL PASO, TX 799052707
Phone: (915) 545-7345
Fax: (915) 545-7338
Type: Location
125 W 25TH ST FL 7
NEW YORK, NY 100017247
Phone:
Type: Mailing
19106 W JOSEY OVERLOOK DR
CYPRESS, TX 774337026
Phone: (909) 618-3924
Type: Mailing
12141 RICHMOND AVE
HOUSTON, TX 770822408
Phone: (281) 588-8110
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: 2025-08-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 4 Medicare enrollment records; no due dates published yet.
Enrollment records
4
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 |
|---|---|---|---|---|
| I20170623000238 | I | Emergency Medicine | TX | TBD |
| I20210415001490 | I | Emergency Medicine | FL | TBD |
| I20250326003705 | I | Emergency Medicine | CA | TBD |
| I20250829004169 | I | Emergency Medicine | MD | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 77002)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | TX | |
| Emergency Medicine | PA | |
| Emergency Medicine | CA | |
| Emergency Medicine, Critical Care (Intensivists), Pulmonary Disease | CA | |
| Emergency Medicine | NJ | |
| Emergency Medicine | DC | |
| Emergency Medicine | NY | |
| Emergency Medicine | CA | |
| Emergency Medicine | ID | |
| Emergency Medicine | TX |
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