Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Sonya Leigh Merrill, MD, PHD

Individual provider Sleep Medicine (Internal Medicine) Physician · NPI 1316954092

Dr. Sonya Leigh Merrill, MD, PHD is a Sleep Medicine (Internal Medicine) Physician in Dallas, Texas. Licensed in Texas. Registered with an NPI since 2006.

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

7777 Forest Ln B116
Dallas, TX 75230
Phone: (972) 566-7684
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence L6114 (TX)

Record details

NPI number1316954092
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedAugust 2, 2006
Last updated in NPPESJuly 16, 2007

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