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

Individual provider Orthopaedic Surgery Physician · NPI 1750455507

Dr. Mark Gerard Kowall, MD is an Orthopedic Surgery in Templeton, California. Graduated from Northwestern University Feinberg Medical School in 1987, 39 years ago. Practices with David B. Hammer, a 116-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
39
Trained at
Northwestern University Feinberg Medical School
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

78 S Main St
Templeton, CA 93465-9787
Phone: (805) 434-0999
Fax: (805) 434-5267
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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 G74354 (CA)

Record details

NPI number1750455507
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 20, 2006
Last updated in NPPESSeptember 16, 2008

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1987 (39 years in practice)
Group practice David B. Hammer — 116 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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