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

Mark T Hellner MD Inc

Organization Orthopaedic Surgery Physician · NPI 1134442544

Mark T Hellner MD Inc is an Orthopaedic Surgery Physician in Merced, California. Licensed in California. Registered with an NPI since 2010.

Licensed in
CA
In the registry since
2010
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

900 W Olive Ave Ste A
Merced, CA 95348-2401
Phone: (209) 388-0730
Fax: (209) 388-0731
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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 number1134442544
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Hellner — Owner · (209) 388-0730
NPI enumeratedMarch 12, 2010
Last updated in NPPESAugust 31, 2010
Mailing address900 W Olive Ave, Suite A, Merced, CA 95348-2401

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