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

Individual provider Internal Medicine Physician · NPI 1073573168

Dr. Gregg Alan Ellison, MD is an Internal Medicine in Templeton, California. Graduated from Baylor College of Medicine in 1977, 49 years ago. Practices with David B. Hammer, a 116-clinician group and offers telehealth. Licensed in California.

Years since qualifying
49
Trained at
Baylor College of Medicine
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

1105 Las Tablas Rd Ste F
Templeton, CA 93465-9731
Phone: (805) 434-1851
Fax: (805) 434-1193
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A33338 (CA)

Record details

NPI number1073573168
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 24, 2006
Last updated in NPPESFebruary 25, 2009

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice David B. Hammer — 116 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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