ISAAC LILL – Internal Medicine Physician, NPI 1003558495
Internal Medicine Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
13,297 INTERNAL MEDICINE in TX
Provider Addresses for ISAAC LILL
1 Baylor Plz
Houston, TX 770303498
Phone: (713) 798-4951
Type: Location
6401 MAPLE AVE APT 8102
DALLAS, TX 752355525
Phone: (512) 740-0124
Type: Mailing
1 BAYLOR PLZ
HOUSTON, TX 770303498
Phone: (713) 798-4951
Type: Location
PO BOX 848491
DALLAS, TX 752848491
Phone: (254) 202-9330
Fax: (254) 202-9349
Type: Mailing
100 HILLCREST MEDICAL BLVD
WACO, TX 767128897
Phone: (254) 202-2000
Fax: (254) 202-5651
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: 2025-09-16
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 |
|---|---|---|---|---|
| I20250916002904 | I | Internal Medicine | TX | 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 77030)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Family Practice | TX | |
| Nurse Practitioner | TX | |
| Hospitalist, Internal Medicine | AL | |
| Family Practice, Hospitalist | TX | |
| - | TX | |
| Family Practice | TX | |
| Internal Medicine | TX | |
| Orthopedic Surgery | TX | |
| Physician Assistant | TX | |
| U R O L O G Y | TX |
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