#1 Custom Converting, Inc.
Based in Oceanside, CA
Call (760) 724-0664 · WebsiteContract Drug Manufacturers in Oceanside, CA
The top-ranked contract drug manufacturers serving Oceanside, CA are Custom Converting, Inc., Sparsha Pharma USA, Inc. and Tarsal Pharmaceuticals, Inc.. We list 144 contract drug manufacturers serving Oceanside, CA. 30 of the providers shown match an active record from U.S. Food and Drug Administration, checked on the date shown. Rankings follow our published methodology; sponsored placements never change rank.
Contract Drug Manufacturers serving Oceanside, CA (San Diego County). 144 providers, 10 of the top 10 verified against federal or state records. Registry records checked on 2026-11-04.
Top 10 ranked contract drug manufacturers for Oceanside
#2 Sparsha Pharma USA, Inc.
Based in Oceanside, CACall (760) 849-8160 · Website#3 Tarsal Pharmaceuticals, Inc.
Based in Oceanside, CA#4 Genentech, Inc.
Serves this area from Oceanside, CA (2 mi)#5 Gilead Sciences, Inc.
Serves this area from Oceanside, CA (2 mi)#6 Novartis Manufacturing LLC
Serves this area from Carlsbad, CA (6 mi)#7 1Link LLC dba USA Diagnostix
Serves this area from Carlsbad, CA (6 mi)#8 Ionis Pharmaceuticals Inc.
Serves this area from Carlsbad, CA (6 mi)#9 SAFC Carlsbad Inc.
Serves this area from Carlsbad, CA (6 mi)#10 Argonaut Manufacturing Services
Serves this area from Carlsbad, CA (7 mi)
20 more providers serving this area
- Porphose, Vista, CA (7 mi)
- Carlsbad Technology, Inc., Carlsbad, CA (7 mi)
- Bachem Americas, Inc., Vista, CA (7 mi)
- SOHM Inc., Vista, CA (8 mi)
- Nippon Sanso Matheson, Inc., San Marcos, CA (8 mi)
- Airgas USA, LLC, San Marcos, CA (9 mi)
- innovative bioscience corp, San Marcos, CA (10 mi)
- Piveg, Inc., San Diego, CA (19 mi)
- Pleotropy LLC, Del Mar, CA (19 mi)
- Neurocrine Biosciences, Inc., San Diego, CA (20 mi)
- ZebraSci, Inc., Temecula, CA (21 mi)
- Airgas USA, LLC, Temecula, CA (21 mi)
- Glaukos Corporation, San Clemente, CA (22 mi)
- PCI San Diego, Inc., San Diego, CA (23 mi)
- Inovio Pharmaceuticals, Inc., San Diego, CA (23 mi)
- Nielsen BioSciences, Inc., San Diego, CA (23 mi)
- Future Foam, Inc., San Clemente, CA (23 mi)
- Tanvex BioPharma USA, Inc, San Diego, CA (23 mi)
- Wacker Biotech US, Inc., San Diego, CA (23 mi)
- Infinity Labs, SD Inc., San Diego, CA (23 mi)
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Frequently asked questions
How many contract drug manufacturers serve Oceanside?
We list 144 contract drug manufacturers serving Oceanside, CA: 3 based there and 141 serving it from nearby. 10 of the top 10 match an active federal or state record, checked on 2026-11-04.
Which contract drug manufacturers serve Oceanside?
The top-ranked contract drug manufacturers serving Oceanside, CA are Custom Converting, Inc., Sparsha Pharma USA, Inc., Tarsal Pharmaceuticals, Inc., Genentech, Inc. and Gilead Sciences, Inc.. The full ranked list, with the official records each provider matched, is on this page.
Which contract drug manufacturers serving Oceanside are verified against official records?
10 of the top 10 match an active official record: Custom Converting, Inc. (U.S. Food and Drug Administration), Sparsha Pharma USA, Inc. (U.S. Food and Drug Administration), Tarsal Pharmaceuticals, Inc. (U.S. Food and Drug Administration), Genentech, Inc. (U.S. Food and Drug Administration) and Gilead Sciences, Inc. (U.S. Food and Drug Administration), and 5 more on this page. Each badge links to the official record it matched.
How are these companies ranked?
By our published methodology: verified registrations, documented capabilities, years registered and responsiveness. Sponsored placements are shown separately and never affect rank.
What does "Verified" mean on this page?
"Verified" means we matched the provider to an active official record on the date shown; each badge links to that record. The absence of a badge only means we have not verified that item.
What does FDA establishment registration show?
Facilities that manufacture, prepare or process drugs for the U.S. market must register with FDA every year and list their operations. Registration is not an FDA approval of the facility or its products.
"Verified" means we matched the provider to an active official record on the date shown. The absence of a badge only means we have not verified that item. How we rank and verify. Page updated .