Dr. Thomas Barker , MD
Internal Medicine • Lansing, MI
Professional Overview & Biography Verified Profile Summary
Dr. Thomas Barker, MD is a registered healthcare professional specializing in Internal Medicine in Lansing, MI. Practice services are available at 2900 COLLINS RD under active NPI credentials.
Practice Location & Contact Primary Location
2900 Collins Rd
Lansing, MI 489108394
Specialty Benchmarks & Practice Insights
Comparative analytics for Internal Medicine in Lansing, MI
Practicing in Lansing, MI (6010 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2026-06-22NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Secondary Practice Locations
3955 Patient Care Dr Ste A
Lansing, MI 489114271
Phone: 5173747600
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Student in an Organized Health Care Education/Training Program
Doctor of Osteopathic Medicine (D.O.)
Student in an Organized Health Care Education/Training Program
Student in an Organized Health Care Education/Training Program
Doctor of Osteopathic Medicine (D.O.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Student in an Organized Health Care Education/Training Program
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 3955 PATIENT CARE DR STE A, LANSING, MI 489114271 (Tel: 5173747600)
Internal Medicine (License #4301517962 in MI)
NPI status registered as active in NPPES database
Registered at 2900 COLLINS RD, LANSING, MI 489108394 (Tel: 5179756000)
Registered at 2900 COLLINS RD, LANSING, MI 489108394 (Tel: 5179756000)
Recorded as THOMAS BARKER, MD
Student in an Organized Health Care Education/Training Program (License #4351051047 in MI)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
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NPI Administrative Meta
Mailing Address
3955 Patient Care Dr Ste A
Lansing, MI 489114271
Phone: 5173747600
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