List of Medical laboratories in California
California has 3,433 medical laboratories in this dataset, last verified September 8, 2026. That makes it the largest market for medical laboratories in the United States, with 13% of the national total, ahead of Florida (2,500).
Among cities, San Diego leads with 122, ahead of San Francisco (107) and Los Angeles (101). Together the top three hold only 9.6% of all medical laboratories in California, so the market reaches well beyond its biggest cities.
Email is harder to come by in California: 614 records (17.9%) include an email address, well below the national rate of 24.4%, so phone should carry more of the outreach. 3,028 (88.2%) list a phone number, and 593 carry both.
66.2% of medical laboratories in California have a website, in line with the national average of 71.1%. The 1,162 without a site are a ready-made prospect list for web design and local SEO agencies.
Among the 2,007 rated medical laboratories in California, 31% hold a 5-star average, below the national figure of 35%. 428 are rated 1 to 2 stars (21% of rated businesses, in line with the national 21%), a natural shortlist for reputation management and review software.
Social Media Reach
805
778
688
561
YouTube
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Medical laboratories List in California
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| LOGO | Business Name | Address | City | State | Country | Phone | Website | Reviews | Rating | FB | IG | LI | YT | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Quest Diagnostics | Address | Bakersfield | California | United States | Email | Phone | 143 | 4 | — | — | — | — | |||
Primex Clinical Laboratories | Address | Ridgecrest | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
Covid-19 Vaccine Location-Santa Clara County Fairgrounds Expo Hall | Address | San Jose | California | United States | Email | Phone | 9 | 4.6 | — | — | — | — | |||
21st Century Diagnostic Lab | Address | Glendale | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
Rancho Cordova Lab | Address | Mather | California | United States | Email | Phone | 1 | 5 | — | — | — | — | |||
The Neuron Clinic | Address | Escondido | California | United States | Email | Phone | 52 | 2.4 | — | — | |||||
Mr. Vein LLC | Address | Long Beach | California | United States | Email | Phone | 8 | 5 | — | — | — | — | |||
Labcorp | Address | Santa Ana | California | United States | Email | Phone | 154 | 2.6 | |||||||
COVID-19 Vaccine Location-Robert Livermore Community Center | Address | Livermore | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
Group 4 Labs Inc | Address | Redwood City | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
Gnosis | Address | Hemet | California | United States | Email | Phone | 53 | 4.6 | — | — | — | — | |||
Labcorp | Address | Auburn | California | United States | Email | Phone | 42 | 2.2 | |||||||
Equaltox Laboratory | Address | Tustin | California | United States | Email | Phone | 21 | 3.8 | — | — | — | — | |||
Discovery Genomics, Inc. | Address | Irvine | California | United States | Email | Phone | — | 15 | 5 | — | — | — | — | ||
Capitola Center Lab | Address | Capitola | California | United States | Email | Phone | 1 | 5 | — | — | — | — |
This is a randomized preview — the full database contains 3,433 records with complete field coverage.
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3,433 verified records — emails, phones, social profiles and more. One-time payment, instant download.
Distribution by Location
Number of Medical laboratories across different territories
City | Medical laboratories |
|---|---|
San Diego | 122 |
San Francisco | 107 |
Los Angeles | 101 |
What You Can Do with the List of Medical laboratories in California
This list is built for teams that sell to medical laboratories: medical supply distributors, practice software vendors, billing services and healthcare staffing agencies. It covers 3,433 medical laboratories in California, with the fields to call, email, segment and map them.
Who Sells to Medical laboratories in California
Each of these buyers can work the 3,433 businesses in this list as a pipeline for a different product:
- Medical and dental supply distributors: Open accounts with the 3,433 medical laboratories in California for consumables, instruments and equipment.
- Practice management and EHR software: Pitch scheduling, patient records and billing systems to independent practices.
- Medical billing and credentialing services: Offer to take claims, coding and payer enrollment off the front desk.
- Healthcare staffing agencies: Place nurses, medical assistants and front-office staff.
Phone, Contact Form and Facebook Outreach in California
Start with the 593 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (3,028): 88.2% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Website contact forms (1,431): businesses with a contact page URL give you another way in when no email is listed.
- Facebook messages (805): 23.4% have a Facebook page, a further channel when calls and emails go unanswered.
- CRM import: CSV and Excel files load into HubSpot, Salesforce, Zoho or Pipedrive, with city, state and postal code columns for assigning leads to reps.
Prospect Segments for Agencies in California
Filter the website, rating and social columns to pull the medical laboratories that fit a specific service before you pitch:
- No website listed (1,162): 34% of medical laboratories in California have no website on record, a direct prospect list for web designers and local SEO agencies.
- Rated 1 to 2 stars (428): businesses with poor Google ratings, prospects for reputation management and review generation services.
- No Facebook page (2,628): 77% have no Facebook page on record, an opening for social media management agencies.
Prioritize Cities Across California
The 3,433 medical laboratories in California are spread across 3 cities we track and many smaller towns, so rank areas before sending reps out:
- Top city markets: San Diego, San Francisco and Los Angeles hold 9.6% of records in California, the biggest clusters for in-person visits.
- Beyond the big cities: 3,103 records (90%) sit outside the 3 cities with their own list, reachable by phone and email without travel.
- Postal code patches: records include postal codes, so each rep can get a compact patch with no overlapping accounts.
- Route planning: records include latitude and longitude, so you can map accounts and plan visit days around clusters.
Data Coverage for Medical laboratories in California
3,433 records · verified September 8, 2026
- Phone numbers
- 3,028
- Email addresses
- 614
- Phone and email
- 593
- Websites
- 2,271
Google ratings· 2,007 rated (58%)
31% hold 5 stars
- 1-star rated
- 153
- 7.6% of rated
- 2-star rated
- 275
- 13.7% of rated
- 3-star rated
- 670
- 33.4% of rated
- 4-star rated
- 280
- 14% of rated
- 5-star rated
- 629
- 31.3% of rated
Social profiles:
- Facebook:805· 23.4%
- Instagram:778· 22.7%
- LinkedIn:688· 20%
- X (Twitter):687· 20%
- YouTube:561· 16.3%
Medical laboratories in California are a phone-first, Facebook-heavy market: 88.2% list a phone number but only 17.9% publish an email. Among 2,007 rated medical laboratories, 31% hold 5 stars, a more even spread, so ratings separate businesses meaningfully.
Related Medical laboratories by Location
Browse datasets for Medical laboratories across nearby locations
Frequently asked questions about Medical laboratories in California
Everything you need to know about our medical laboratories database for California: data quality, coverage, freshness, pricing, and formats. Last updated September 8, 2026.
How many Medical laboratories are there in California?
There are 3,433 medical laboratories in California in our verified database, as of September 8, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, across every city in California, for sales prospecting, competitive research, and territory planning.
How up to date is the Medical laboratories data for California?
This dataset was last updated in September 8, 2026.
Business contact data decays at roughly 2–3% per month as businesses close, move, or change details, so we re-verify our most-purchased datasets on a rolling basis.
Every file is also run through email verification before delivery, and past buyers are offered discounted refreshed versions as updates ship.
What fields are included in the Medical laboratories database for California?
Each record can include: business name, full address, phone number, email address, website URL, social profiles (LinkedIn, Facebook, Instagram, YouTube, X), review ratings, and category details, plus contact-page URLs where available.
Field coverage varies by record; the counts below and the free sample show you exactly what to expect before buying.
Where can I buy verified market intelligence data for Medical laboratories businesses in California?
InfiniteLeadsHub provides verified market intelligence datasets for medical laboratories businesses in California as a one-time purchase with no subscription.
Ideal for market research, sales planning, and business development.
How much does the Medical laboratories database for California cost?
The complete medical laboratories leads database for California costs $36 as a one-time payment.
You get instant access to all 3,433 records with no recurring fees, no per-record charges, and no seat limits.
It is a cost-effective alternative to subscription platforms that charge monthly for the same public business data.
Is this a cheaper alternative to subscription lead databases like ZoomInfo or Apollo?
Yes. For teams that need medical laboratories contacts in California specifically, a one-time $36 file is usually far cheaper than subscription platforms, which typically charge thousands of dollars per year with contracts and per-seat pricing.
Subscriptions make sense for large sales teams needing continuous multi-industry access; a one-time targeted list makes sense when you know exactly which niche and geography you're selling into.
Can I preview a sample of the Medical laboratories data before buying?
Yes. A free sample dataset is available so you can evaluate data quality, field coverage, and format before purchasing.
The sample is a representative slice of the full California medical laboratories database, including contact fields, social profiles, and ratings data.
How do I download the Medical laboratories list, and what file formats are available?
You get instant access after purchase. Files are delivered in CSV and Excel (XLSX) formats.
CSV and Excel import directly into CRMs like Salesforce, HubSpot, and Zoho and into any email platform.
How many Medical laboratories in California have phone numbers?
3,028 medical laboratories in California (88% of the database) include a phone number.
That makes the dataset effective for cold calling, telemarketing, and appointment setting campaigns.
How many Medical laboratories in California have email addresses?
614 medical laboratories in California (18%) include an email address.
Email remains one of the highest-ROI B2B outreach channels, making this subset ideal for cold email sequences, product announcements, and drip campaigns.
How many Medical laboratories in California have both a phone number and an email address?
593 medical laboratories in California have both a phone number and an email address.
Dual-contact records enable multi-channel outreach: combining calls with email follow-ups measurably improves response rates.
How many Medical laboratories in California are active on social media?
Social profile coverage for medical laboratories in California: 688 on LinkedIn, 805 on Facebook, 778 on Instagram, 561 on YouTube, 687 on X (Twitter).
Social presence signals digitally engaged businesses, which is useful for agencies pitching social media services, ad platforms building audiences, and vendors targeting digitally mature prospects.
How many Medical laboratories in California have a website?
2,271 medical laboratories in California (66%) have an active business website.
That is an indicator of digital maturity, and an ideal segment for SEO agencies, hosting providers, and SaaS platforms.
How many Medical laboratories in California do not have a website?
1,162 medical laboratories in California operate without a business website.
These are high-intent, overlooked prospects for web design agencies, local SEO providers, and Google Business optimization services.
What are the review ratings of Medical laboratories in California?
Rating breakdown for medical laboratories in California: 629 with a 5-star rating, 280 with a 4-star rating, 670 with a 3-star rating, 275 with a 2-star rating, 153 with a 1-star rating.
Top-rated businesses suit premium services and partnership proposals; lower-rated businesses are receptive prospects for reputation management, review tools, and operational software.
Can I get Medical laboratories data for other states or the entire US?
Yes. The national Medical laboratories database covers all 50 US states, and individual state and major-city lists are also available.
If you buy California first, contact us and we'll credit your purchase toward the national upgrade.
Most multi-state buyers save money going national.
Is the Medical laboratories contact data in California legal to use for B2B outreach?
Yes. All data is sourced exclusively from publicly available information: Google Business listings, company websites, social media profiles, and public business directories.
This is business contact information, not personal consumer data, making it appropriate for B2B prospecting.
We recommend following applicable regulations such as CAN-SPAM (US), CASL (Canada), and GDPR (EU-targeted campaigns) so your outreach remains fully compliant.