Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William G. Wierda, MD, PHD

Individual provider Hematology & Oncology Physician · NPI 1497848279

William G. Wierda, MD, PHD is a Hematology/Oncology in Houston, Texas. Qualified in 1993, 33 years ago. Practices with Physicians Referral Service, a 2,727-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
33
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1515 Holcombe Blvd
Houston, TX 77030-4009
Phone: (713) 792-3753
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence L3873 (TX)

Record details

NPI number1497848279
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedOctober 2, 2006
Last updated in NPPESJuly 5, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Physicians Referral Service — 2727 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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