Quick answers
- Where does Gregory D. Smith see patients?
- Medicare's clinician data lists 2 practice locations, including Irvine, CA and Mascot, TN. Call before your visit to confirm the address.
- What is Gregory D. Smith's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Gregory D. Smith accept Medicare assignment?
- Medicare's clinician data says Gregory D. Smith may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is Gregory D. Smith's NPI number?
- 1437270006. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gregory D. Smith is enrolled with Medicare (CMS data updated 2026-10-02).
- 18401 Von Karman Ave, Suite 500Irvine, CA 92612
- 9400 Calla Lilly LnMascot, TN 37806
Specialties
- Family Practiceprimary
Other family doctors in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | University Of North Texas Hsc, College Of Osteopathic Med |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1437270006 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians