Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Tammy Croy McMillian, PHD, LMSW

Individual provider Clinical Social Worker · NPI 1639235898

Dr. Tammy Croy McMillian, PHD, LMSW is a Clinical Social Worker in Boyne City, Michigan. Qualified in 1991, 35 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
35
Licensed in
MI
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

701 S Park St
Boyne City, MI 49712-1535
Phone: (231) 582-0553
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 6801070736 (MI)

Record details

NPI number1639235898
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD , LMSW
Sole proprietorYes
NPI enumeratedDecember 29, 2006
Last updated in NPPESJanuary 14, 2019

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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