1
Shannon Lambert, MSPA-C
#1 in Ontario
5
Ranked by Google ratings, review quality, and response time. Updated April 2026.
859 E Foothill Blvd Ste B, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Our top-ranked pick with an exceptional 5-star rating across 300 Google reviews.
8401 Pine Ave Suite 120, Chino, CA 91708, USA, Ontario, CA 91708
Why they ranked: A close runner-up with an exceptional 5-star rating across 171 Google reviews.
2780 E Riverside Dr suite c, Ontario, CA 91761, USA, Ontario, CA 91761
Why they ranked: Ranked #3 with an exceptional 5-star rating across 96 Google reviews.
1060 E Foothill Blvd Suite 102, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #4 with an exceptional 5-star rating.
3110 Chino Ave #120, Chino Hills, CA 91709, USA, Ontario, CA 91709
Why they ranked: Ranked #5 with an exceptional 4.9-star rating across 627 Google reviews.
859 E Foothill Blvd Ste B, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #6 with an exceptional 4.9-star rating across 262 Google reviews.
10470 Foothill Blvd Suite 127, Rancho Cucamonga, CA 91730, USA, Ontario, CA 10470
Why they ranked: Ranked #7 with an exceptional 4.9-star rating across 260 Google reviews.
859 E Foothill Blvd Ste B, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #8 with an exceptional 4.9-star rating across 233 Google reviews.
859 E Foothill Blvd Ste B, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #9 with an exceptional 4.8-star rating across 182 Google reviews.
585 N Mountain Ave Suite A, Upland, CA 91786, USA, Ontario, CA 91786
Why they ranked: Ranked #10 with a strong 4.6-star rating across 880 Google reviews.
Rating Score (50%) — Average star rating from Google customer reviews.
Review Volume (30%) — Number of Google reviews. More reviews = greater confidence.
Response Time (20%) — Faster response times earn higher rankings.
Only businesses with 3+ reviews are eligible. Rankings refresh every hour. Paid listings do not influence ranking order.
Shannon Lambert, MSPA-C currently holds the top spot with a 5-star rating across 300 reviews.
No. Paid tiers get additional profile features, but ranking order is determined solely by ratings, reviews, and response time.
List your business and accumulate at least 3 Google reviews. Rankings are automatic and updated hourly.
Browse dermatologists by zip code or neighborhood in Ontario.
Browse by Zip Code →