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WAI YIM LAM M.D.
NPI 1194090431
Internal Medicine - Hospice and Palliative Medicine in Shenandoah, TX

Active since March 20, 2012PECOS EnrolledAccepts Medicare Assignment
17189 INTERSTATE 45 S STE 505, SHENANDOAH, TX 77385(936) 270-4400(936) 270-4401 Get Directions Write a Review

NPPES record last updated: March 21, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 21, 2023, Aug 15, 2019, Jul 17, 2018 and 1 more (4 updates tracked since 2017).

About Wai Yim Lam M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WAI YIM LAM M.D. (NPI 1194090431) is an individual hospice and palliative medicine provider in Shenandoah, Texas, licensed in Texas (R7257) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS, is affiliated with Houston Methodist The Woodlands Hospital, and is a graduate of State University Of New York At Buffalo School Of Medicine (2012).

NPPES Registry Identity

NPI1194090431
Entity TypeIndividualFemale
Primary Taxonomy207RH0002X
Provider Legal NameWAI YIM LAMCredential: M.D.
Location Address17189 INTERSTATE 45 S STE 505Shenandoah, TX 77385-3323
Mailing Address17189 Interstate 45 S Ste 505Shenandoah, TX 77385-3323 · (936) 270-4400 · Fax (936) 270-4401
Phone(936) 270-4400
Fax(936) 270-4401
Sole ProprietorNo
Medical School CMSState University Of New York At Buffalo School Of MedicineGraduated 2012
Enumeration DateMarch 20, 2012
Last NPPES UpdateMarch 21, 20234 updates tracked since enumeration
NPPES CertifiedMarch 21, 2023
✔ NPI 1194090431 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License✔ Licensed in TX · R7257
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
17189 INTERSTATE 45 S STE 505, Shenandoah, TX 77385
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Wai Yim Lam M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305120007
PECOS Enrollment IDI20180801000811
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Wai Yim Lam reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Tmh Physician Associates PLLC
34 mi
Ophthalmology
6550 FANNIN ST, SUITE 447
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,407 clinicians in this Medicare group
NPI 1275779225 (713) 441-7389
Houston Methodist Specialty Physicians
35 mi
Otolaryngology
7550 GREENBRIAR DR STE 600
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 1,579 clinicians in this Medicare group
NPI 1902614332 (281) 414-6055
Memorial Hermann Medical Group
43 mi
Family Medicine
6631 W CROSS CREEK BEND LN STE 200
Fulshear, TX 77441
  • Reassigned Medicare billing, Texas enrollment
  • 1,235 clinicians in this Medicare group
NPI 1003985102 (832) 658-5750

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
202 services175 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
108 services74 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
63 services59 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
33 services28 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
22 services21 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
14 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Houston Methodist The Woodlands Hospital

Acute Care Hospitals · The Woodlands, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number670122
Location17201 Interstate 45 SouthThe Woodlands, TX 77385 · Montgomery County
Emergency services Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%37 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MUSAB U SAEED MD
Internal Medicine (Infectious Disease)
17189 INTERSTATE 45 S STE 505
SHENANDOAH, TX 77385
Montgomery County (936) 270-4400

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Wai Yim Lam's NPI number?

The NPI number for Wai Yim Lam is 1194090431. It was assigned to this individual provider in the NPPES registry on March 20, 2012.

Where is Wai Yim Lam located?

Wai Yim Lam practices at 17189 Interstate 45 S Ste 505, Shenandoah, TX 77385. The listed phone number is (936) 270-4400.

What is Wai Yim Lam's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Wai Yim Lam enrolled in Medicare?

Yes. Wai Yim Lam is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Wai Yim Lam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Wai Yim Lam reassigns Medicare benefits to 3 organizations: Tmh Physician Associates PLLC (Houston, TX), Houston Methodist Specialty Physicians (Houston, TX) and Memorial Hermann Medical Group (Fulshear, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Wai Yim Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Wai Yim Lam accept?

Health plans from Blue Cross and Blue Shield of Texas and WellPoint list Wai Yim Lam as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Wai Yim Lam affiliated with any hospitals?

According to CMS data, Wai Yim Lam is affiliated with Houston Methodist The Woodlands Hospital.

When was this NPI record last updated?

The NPPES record for Wai Yim Lam was last updated on March 21, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.