List of Doctors in Castro Valley
Castro Valley, California, has 127 doctors in this dataset, last verified September 6, 2026. Among the 250 California cities we track, it ranks 208th, between Salida (127) and Los Alamitos (127). Local listings make up 0.2% of all doctors in California.
66 doctors in Castro Valley list both a phone number and an email address, the best starting point for multi-channel outreach. At 52%, email coverage runs well above the California average of 19.2%, while 98.4% of listings include a phone number.
With 78% already online (well above 59.8% across California), only 28 doctors in Castro Valley lack a website, so site improvements and SEO are the stronger pitch. 12 of their websites list a contact page URL.
72% of the 100 rated doctors in Castro Valley hold a 5-star average, well above the California figure of 52%. The 6 rated 1 to 2 stars are the obvious first calls for a reputation management pitch.
Social Media Reach
71
57
51
21
YouTube
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Doctors List in Castro Valley
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| LOGO | Business Name | Address | City | State | Country | Phone | Website | Reviews | Rating | FB | IG | LI | YT | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Dr. Najibulrahman Saifulrahman, MD | Address | Castro Valley | California | United States | Email | Phone | 36 | 4.8 | — | — | ||||
Dr. James Shu, MD | Address | Castro Valley | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Marcia C. Peck, M.D. MPH | Address | Castro Valley | California | United States | Email | Phone | 163 | 4.9 | — | |||||
 | Alden J. McDonald III, M.D. | Address | Castro Valley | California | United States | Email | Phone | 116 | 5 | — | |||||
 | Audrey Alvarez, DPM | Address | Castro Valley | California | United States | Email | Phone | 114 | 5 | — | — | — | — | ||
Dr. Laura E. Balestreri, MD | Address | Castro Valley | California | United States | Email | Phone | 1 | 5 | — | — | — | — | |||
Dr. Erik Cabral | Address | Castro Valley | California | United States | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | Kristin M. Brew, M.D. | Address | Castro Valley | California | United States | Email | Phone | 51 | 4.9 | — | |||||
 | Dr. Paul J. Robinson, D.O. | Address | Castro Valley | California | United States | Email | Phone | 10 | 3.1 | — | — | — | — | ||
 | Rinku Shrivastava MD | Address | Castro Valley | California | United States | Email | Phone | 9 | 3.7 | — | — | — | — | ||
Dr. Shirley Park, MD | Address | Castro Valley | California | United States | Email | Phone | — | 1 | 4 | — | — | — | — | ||
 | Primary Eyecare Optometrics | Address | Castro Valley | California | United States | Email | Phone | 226 | 4.6 | — | — | — | — | ||
 | Nancy H. Wigginton, M.D. FACOG | Address | Castro Valley | California | United States | Email | Phone | 63 | 5 | — | |||||
 | Barry S. Mann, M.D. | Address | Castro Valley | California | United States | Email | Phone | 10 | 4.1 | ||||||
 | Allergy Asthma and Sinus Centers of Silicon Valley | Address | Castro Valley | California | United States | Email | Phone | 16 | 3.5 | — | — | — | — |
This is a randomized preview — the full database contains 127 records with complete field coverage.
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127 verified records — emails, phones, social profiles and more. One-time payment, instant download.
Top business categories in Castro Valley
Most popular business categories across Castro Valley
Category | Doctors |
|---|---|
What You Can Do with the List of Doctors in Castro Valley
This list is built for teams that sell to doctors: medical supply distributors, practice software vendors, billing services and healthcare staffing agencies. It covers 127 doctors in Castro Valley, with the fields to call, email, segment and map them.
Who Sells to Doctors in Castro Valley, California
Each of these buyers can work the 127 businesses in this list as a pipeline for a different product:
- Medical and dental supply distributors: Open accounts with the 127 doctors in Castro Valley 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, Facebook and Email Outreach in Castro Valley, California
Start with the 66 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (125): 98.4% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Facebook messages (71): 55.9% have a Facebook page, a further channel when calls and emails go unanswered.
- Email sequences (66): 52% of records include an email address, so email can lead the campaign with calls as follow-up.
- 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 Castro Valley, California
Filter the website, rating and social columns to pull the doctors that fit a specific service before you pitch:
- No website listed (28): 22% of doctors in Castro Valley have no website on record, a direct prospect list for web designers and local SEO agencies.
- Rated 1 to 2 stars (6): businesses with poor Google ratings, prospects for reputation management and review generation services.
Local Coverage Plan for Castro Valley
With 127 doctors in one city, local teams can work the list in person as well as by phone:
- Route planning: records include latitude and longitude, so field reps can map all 127 doctors in Castro Valley and plan visit days by neighborhood.
- Postal code patches: split Castro Valley by postal code to divide accounts between reps or focus on specific parts of town.
- Next markets: the 249 other California cities we track are the next step once Castro Valley accounts are covered.
Data Coverage for Doctors in Castro Valley
127 records · verified September 6, 2026
- Phone numbers
- 125
- Email addresses
- 66
- Phone and email
- 66
- Websites
- 99
Google ratings· 100 rated (79%)
72% hold 5 stars
- 1-star rated
- 1
- 1% of rated
- 2-star rated
- 5
- 5% of rated
- 3-star rated
- 13
- 13% of rated
- 4-star rated
- 9
- 9% of rated
- 5-star rated
- 72
- 72% of rated
Social profiles:
- Facebook:71· 55.9%
- X (Twitter):70· 55.1%
- Instagram:57· 44.9%
- LinkedIn:51· 40.2%
- YouTube:21· 16.5%
Doctors in Castro Valley are an email-friendly, Facebook-heavy market: 98.4% list a phone number and 52% publish an email. Among 100 rated doctors, 72% hold 5 stars, a spread heavily skewed to the top, so low ratings stand out.
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Frequently asked questions about Doctors in Castro Valley, California
Everything you need to know about our doctors database for Castro Valley, California: data quality, coverage, freshness, pricing, and formats. Last updated September 6, 2026.
How many Doctors are there in Castro Valley, California?
There are 127 doctors in Castro Valley, California in our verified database, as of September 6, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, giving you the complete Castro Valley market for sales prospecting and territory planning.
How up to date is the Doctors data for Castro Valley, California?
This dataset was last updated in September 6, 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 Doctors database for Castro Valley, 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 Doctors businesses in Castro Valley, California?
InfiniteLeadsHub provides verified market intelligence datasets for doctors businesses in Castro Valley, California as a one-time purchase with no subscription.
Ideal for market research, sales planning, and business development.
How much does the Doctors database for Castro Valley, California cost?
The complete doctors leads database for Castro Valley, California costs $10 as a one-time payment.
You get instant access to all 127 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 doctors contacts in Castro Valley, California specifically, a one-time $10 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 Doctors 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 Castro Valley, California doctors database, including contact fields, social profiles, and ratings data.
How do I download the Doctors 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 Doctors in Castro Valley, California have phone numbers?
125 doctors in Castro Valley, California (98% of the database) include a phone number.
That makes the dataset effective for cold calling, telemarketing, and appointment setting campaigns.
How many Doctors in Castro Valley, California have email addresses?
66 doctors in Castro Valley, California (52%) 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 Doctors in Castro Valley, California have both a phone number and an email address?
66 doctors in Castro Valley, 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 Doctors in Castro Valley, California are active on social media?
Social profile coverage for doctors in Castro Valley, California: 51 on LinkedIn, 71 on Facebook, 57 on Instagram, 21 on YouTube, 70 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 Doctors in Castro Valley, California have a website?
99 doctors in Castro Valley, California (78%) 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 Doctors in Castro Valley, California do not have a website?
28 doctors in Castro Valley, 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 Doctors in Castro Valley, California?
Rating breakdown for doctors in Castro Valley, California: 72 with a 5-star rating, 9 with a 4-star rating, 13 with a 3-star rating, 5 with a 2-star rating, 1 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 Doctors data for all of California or the entire US?
Yes. Beyond Castro Valley, we offer the complete Doctors database for California and a national all-50-states version.
If you buy the Castro Valley list first, contact us and we'll credit your purchase toward the state or national upgrade.
Is the Doctors contact data in Castro Valley, 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.