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

Dr. Mark L Douglas, DO

Individual provider Internal Medicine Physician · NPI 1306974464

Dr. Mark L Douglas, DO is an Internal Medicine in Cross Lanes, West Virginia. Graduated from West Virginia School of Osteopathic Medicine in 1989, 37 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in West Virginia.

Years since qualifying
37
Trained at
West Virginia School of Osteopathic Medicine
Licensed in
WV
In the registry since
2007
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.

See every abbreviation used in this directory →

Practice location Address checks out

5098 W Washington St Ste 408
Cross Lanes, WV 25313-1419
Phone: (304) 776-5594
Fax: (304) 776-3521
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 1390 (WV)

Record details

NPI number1306974464
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 1, 2007
Last updated in NPPESDecember 31, 2012
Mailing address5098 West Washington St, Ste 408, Cross Lanes, WV 25313-1419

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolWEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE
Graduated 1989 (37 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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