WAI YIM LAM (M.D.) – Hospice and Palliative Medicine (Internal Medicine) Physician, NPI 1194090431
Hospice and Palliative Medicine (Internal Medicine) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
374 HOSPICE/PALLIATIVE CARE in TX
Provider Addresses for WAI YIM LAM (M.D.)
909 FROSTWOOD DR STE 1.408
HOUSTON, TX 770242301
Phone: (713) 338-4659
Type: Mailing
17189 INTERSTATE 45 S STE 505
SHENANDOAH, TX 773853323
Phone: (936) 270-4400
Fax: (936) 270-4401
Type: Mailing
18951 N MEMORIAL DR
HUMBLE, TX 77338
Phone: (713) 338-4659
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 20 Open Payments records for all available years, with a total value of $556.
Total Amount is formed as General ($556) + Research ($0) + Ownership ($0) = $556.
Last reported payment date: 2024-10-03 • Largest payer in this snapshot: Medtronic, Inc. ($243).
Total Amount
$556
General + Research + Ownership
Payments
20
Total payment records
General Amount
$556
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-03
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Medtronic, Inc. | $243 |
| Myriad Genetic Laboratories, Inc. | $76 |
| Shionogi Inc | $59 |
| Merck Sharp & Dohme LLC | $41 |
| Baxter Healthcare | $41 |
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: 2018-08-01
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 |
|---|---|---|---|---|
| I20180801000811 | I | Hospice/Palliative Care | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 128 | 118 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 121 | 73 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 74 | 51 | $0 |
| 99497 | Advance care planning, first 30 minutes | 51 | 46 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 21 | 21 | $0 |
Insurance plans in this area (ZIP 77024)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | TX | |
| - | TX | |
| Nurse Practitioner | TX | |
| Physician Assistant | TX | |
| Thoracic Surgery, Vascular Surgery | TX | |
| Medical Oncology, Hematology | TX | |
| Internal Medicine | TX | |
| General Surgery | NY | |
| G A S T R O E N T E R O L O G Y | LA | |
| Internal Medicine | TX |
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