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

Gregg Thomas Pottorff, MD

Individual provider Orthopaedic Surgery Physician · NPI 1477520096

Gregg Thomas Pottorff, MD is an Orthopedic Surgery in Castro Valley, California. Qualified in 1986, 40 years ago. Practices with Hill Health Inc a Medical Corporation, a 10-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
40
Licensed in
CA
In the registry since
2006
Specialties on file
2
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

19842 Lake Chabot Rd
Castro Valley, CA 94546-4002
Phone: (510) 886-8844
Fax: (510) 247-8280
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence G61064 (CA)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence G61064 (CA)

Record details

NPI number1477520096
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESJune 7, 2012
Mailing address19842 Lake Chabot Rd, Castro Valley, CA 94546-4002

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 1986 (40 years in practice)
Group practice Hill Health Inc A Medical Corporation — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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