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

William Francis Barker, DO

Individual provider Internal Medicine Physician · NPI 1245868157

William Francis Barker, DO is an Internal Medicine in Springfield, Missouri. Qualified in 2020, 6 years ago. Practices with Lester E Cox Medical Centers, a 243-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
6
Licensed in
MO
In the registry since
2020
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3801 S National Ave Ste 1122
Springfield, MO 65807-6090
Phone: (417) 269-7728
Fax: (417) 269-7729
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 2023013570 (MO)

Record details

NPI number1245868157
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 28, 2020
Last updated in NPPESOctober 10, 2023
Certification dateOctober 10, 2023
Mailing addressPo Box 802843, Kansas City, MO 64180-2843

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Lester E Cox Medical Centers — 243 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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