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

Mr. Mark Thomas Hellner, MD

Individual provider Orthopaedic Surgery Physician · NPI 1659384881

Mr. Mark Thomas Hellner, MD is an Orthopaedic Surgery Physician in Merced, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

900 W Olive Ave Ste A
Merced, CA 95348-2429
Phone: (209) 388-0730
Fax: (209) 388-0731
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

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence G52055 (CA)

Record details

NPI number1659384881
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 15, 2006
Last updated in NPPESAugust 31, 2010
Mailing address900 W Olive Ave, Suite A, Merced, CA 95348-2429

Other providers in Merced