NPPES file of Aug 9, 2026

Wai Yim Lam, M.D.

Hospice and Palliative Medicine (Internal Medicine) Physician · Shenandoah, TX

Wai Yim Lam, M.D. is a hospice and palliative medicine (internal medicine) physician with a practice address in Shenandoah, Texas, and NPI 1194090431, issued on Mar 20, 2012. Check the license (Texas R7257, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1194090431
Name
Wai Yim Lam
Credential
M.D.
Primary taxonomy
Hospice and Palliative Medicine (Internal Medicine) Physician 207RH0002X
License number
R7257 TX
Self-reported in NPPES; status is on the state search
Practice location
17189 Interstate 45 S Ste 505, Shenandoah, TX 77385
Phone
(936) 270-4400
Enumerated
Mar 20, 2012
Record last updated
Mar 21, 2023
Fax
(936) 270-4401
Medicare enrollment
Enrolled (PECOS I20180801000811); accepts Medicare assignment
Medical or professional school
State University Of New York At Buffalo School Of Medicine, 2012
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest hospice and palliative medicine (internal medicine) physician records → All 169 in Texas → Look up another NPI →

Also registered at 17189 Interstate 45 S Ste 505

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Musab Saeed, MDInfectious Disease Physician1427192384

Verify Wai Yim Lam in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license R7257    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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68% fewer Medicare Part D claims than the average hospice and palliative medicine (internal medicine) physician in 2024

237 Medicare Part D claims for 42 beneficiaries, against an average of 741 among the 1,607 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 124 claims were for opioids.

  1. Wai Yim Lam237
  2. Specialty average741

Most prescribed

  1. Hydrocodone-Acetaminophen48 claims
  2. Gabapentin22 claims
  3. Methadone Hcl15 claims
  4. Oxycodone-Acetaminophen13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $413.99

13 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 338 providers of this specialty with any payment received $547.94 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Wai Yim Lam$413.99
  2. Specialty average$547.94

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Houston Methodist Specialty PhysiciansSugar Land, TX
  2. Tmh Physician Associates PLLCSugar Land, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Wai Yim Lam among 169 hospice and palliative medicine (internal medicine) physician records in Texas

Wai Yim Lam, M.D. is one of 169 hospice and palliative medicine (internal medicine) physician records with a practice address in Texas. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 47% of them.

  • NPI issued2012 · 47% of these records are older, 49% newer
  • In a Medicare fileYes · 91% of these records are
  • In the CMS Doctors and Clinicians fileYes · 80% of these records are
  • Graduated2012 · median 2012 among the 136 with a school on file
  • Record last updated2023 · 30% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0002X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospice and Palliative Medicine (Internal Medicine) Physician providers in Texas

There are 169 hospice and palliative medicine (internal medicine) physician records in Texas.

All 169 in Texas → Every provider in Shenandoah → Hospice and Palliative Medicine (Internal Medicine) Physician nationwide →

The 8 hospice and palliative medicine (internal medicine) physician records with the nearest ZIP codes

  1. Cynthia Zinner, MDShenandoah, TX 773801487743852
  2. Cynthia Blizzard, MDHumble, TX 773381841499290
  3. Channon Hudgins, M.D.Sugar Land, TX 774791255521191
  4. Melissa Andrade, MDGalveston, TX 775551598350530
  5. Moustafa El Sayed, MDGalveston, TX 775551780115097
  6. Rebecca Lee, M.D.Galveston, TX 775551447670088
  7. Jose Mendoza, M.D.Galveston, TX 775551699118307
  8. Sean O'Mahony, MDGalveston, TX 775551467542290

Common questions

What is Wai Yim Lam, M.D.'s NPI number?

Wai Yim Lam, M.D.'s National Provider Identifier (NPI) is 1194090431, issued on Mar 20, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Wai Yim Lam, M.D. located?

The NPPES record lists a practice address at 17189 Interstate 45 S Ste 505, Shenandoah, TX, 77385. Phone: (936) 270-4400. Providers update this record themselves, so call before visiting.

How can I verify Wai Yim Lam, M.D.'s license?

NPPES lists Texas license number R7257, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Wai Yim Lam, M.D. prescribe under Medicare Part D?

In 2024, Wai Yim Lam, M.D. had 237 Medicare Part D claims for 42 beneficiaries; the average among hospice and palliative medicine (internal medicine) physician prescribers was 741. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.