Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William Dreyer, MD

Individual provider Pediatric Cardiology Physician · NPI 1184704421

William Dreyer, MD practises Pediatric Medicine in Houston, Texas. Qualified in 1981, 45 years ago. Practices with Texas Childrens Physician Group, a 655-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
45
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6621 Fannin St
Houston, TX 77030-2303 Not confirmed with CMS for 19 years — call before visiting
Phone: (832) 826-5600
Fax: (832) 825-5899
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Cardiology Physician (primary) Taxonomy 2080P0202X · Licence H4906 (TX)

Record details

NPI number1184704421
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 17, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Group practice Texas Childrens Physician Group — 655 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Colleagues at Texas Childrens Physician Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 655 clinicians in the practice; 12 are shown here.

Other providers in Houston