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

Stephen M Lyon, DO

Individual provider Emergency Medicine Physician · NPI 1205180387

Stephen M Lyon, DO is an Emergency Medicine in Portsmouth, Ohio. Qualified in 2012, 14 years ago. Practices with Acs Primary Care Physicians Southwest PA, a 188-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
14
Licensed in
OH
In the registry since
2012
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1805 27th St
Portsmouth, OH 45662-2640
Phone: (740) 356-5000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 58004665 (OH)

Record details

NPI number1205180387
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedOctober 29, 2012
Last updated in NPPESOctober 29, 2012
Mailing address1735 27th St, Waller Bldg, Suite B 06, Portsmouth, OH 45662-2677

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Acs Primary Care Physicians Southwest Pa — 188 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Portsmouth