Grant SeidenMD
Grant Seiden, MD is a Hand Surgery provider in Oceanside, CA affiliated with 2 ambulatory surgery centers in CA, as of July 2026.
- NPI1992025407
- Registered2010
- Centers2
- StateCA
- Class of2010
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Grant Seiden at a glance
- Provider
- Grant Seiden
- Credential
- MD
- Specialty
- Hand Surgery
- Procedures
- Hand Surgery CPT codes
- Location
- Oceanside, CA
- Medical school
- University of California, San Diego School of Medicine
- Graduated
- 2010
- NPI registered
- 2010
- NPI
- 1992025407
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Grant Seiden practice?
Grant Seiden, MD is based in Oceanside, CA and is affiliated with 2 ambulatory surgery centers: Scripps Health Dba ASC Jefferson in Oceanside, CA and Carlsbad Surgery Center LLC in Carlsbad, CA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Grant Seiden's NPI number?
Grant Seiden's National Provider Identifier (NPI) is 1992025407, registered in 2010. Specialty on record: Hand Surgery; credential MD.
Where did Grant Seiden go to medical school?
Grant Seiden, MD attended University of California, San Diego School of Medicine, graduating in 2010.
How many Hand Surgery providers in California work at ambulatory surgery centers?
56 Hand Surgery surgeons and proceduralists in California are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Grant Seiden among them. The California Hand Surgery directory lists each one by city with credential, NPI, and center affiliations.
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