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

Mark O Duncan, DO

Individual provider Neurological Surgery Physician · NPI 1538155122

Mark O Duncan, DO is a Neurosurgery in Lawton, Oklahoma. Graduated from Oklahoma State University College of Osteopathic Medicine in 1994, 32 years ago. Practices with Comanche County Healthcare Corporation, a 125-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
32
Trained at
Oklahoma State University College of Osteopathic Medicine
Licensed in
OK
In the registry since
2005
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

110 NW 31st St Fl 2
Lawton, OK 73505-6100
Phone: (580) 248-5255
Fax: (580) 248-2036
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence 3848 (OK)

Record details

NPI number1538155122
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedSeptember 20, 2005
Last updated in NPPESJuly 10, 2013
Mailing addressPo Box 785, Lawton, OK 73502

Medicare enrollment

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

Medicare specialtyNEUROSURGERY
Medical schoolOKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1994 (32 years in practice)
Group practice Comanche County Healthcare Corporation — 125 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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