Medical weight loss in Ontario, CA

135 med spas offer medical weight loss in and around Ontario, compared by Google rating and who does the treatment. New to it? Read our medical weight loss guide.

135Med spas
4.9Top rating
Photo: peter boy12qq12, CC BY 3.0

135 Medical weight loss Providers Near Ontario

Spas in Ontario first, then nearby, each ranked by Google rating weighted by number of reviews. No spa paid to be on this page. How we rank

1
Theory of Me Med Spa⊞ 6 photos
Ontario · 2780 E Riverside Dr Ste c · 2.8 mi

Theory of Me Med Spa

4.9 (133 Google reviews)

Uncover your inner radiance at Theory of Me, Ontario’s premier destination where beauty meets precision. We specialize in advanced aesthetic treatments and personalized wellness, offering expertly administered Botox, dermal fillers,…

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2
0F2B7D8D-116E-4FE3-AF5E-30D8A6FA5934.jpeg⊞ 6 photos
Ontario · 119 W Transit St · 2.0 mi

Beauty Booth Aesthetics

5.0 (10 Google reviews)

Specialized in personal and natural results Botox-wrinkle relaxer I Fillers I Weight loss Medical I Body Sculpt EMS + RF I Microneedling I SkinCare I Fat loss injection I Vitamins

Online booking
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3
SLS Laser/ Medspa⊞ 5 photos
Ontario · 350 S Milliken Ave # U · 3.4 mi

SLS Laser/ Medspa

4.7 (132 Google reviews)
Alma Soprano

Medical concierge Services , Luxury medical spa specializing in injectables, skin rejuvenation, a ✨ SLS Laser Med Spa | Services Laser Hair Removal • Botox • Lip Fillers • Facial Balancing • PDO Thread Lifts • Salmon DNA…

Latinx-ownedLGBTQ+ friendly
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4
Skin Theory Aesthetics- Corona⊞ 6 photos
Corona · 2791 Green River Rd STE 103 · 12.5 mi

Skin Theory Aesthetics- Corona

5.0 (249 Google reviews)
Laser GenesisLutronic

At Skin Theory Aesthetics Med Spa in Corona , CA (formerly Family & Aesthetic Clinic), we provide top-quality aesthetic services to enhance your natural beauty and confidence. Aesthetics is an art at Skin Theory, tailored to your unique…

Women-ownedMembershipLGBTQ+ friendly
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5
Jade MD Aesthetics Medical Spa⊞ 6 photos
Rancho Cucamonga · 10535 Foothill Blvd #126 · 4.4 mi

Jade MD Aesthetics Medical Spa

5.0 (171 Google reviews)
EmsculptVivace

Welcome to Jade MD Aesthetics Medical Spa, your ultimate destination for top-tier facial rejuvenation and cutting-edge cosmetic treatments at 10535 Foothill Blvd, Rancho Cucamonga. Our med spa specializes in a variety of services…

Women-ownedLatinx-ownedBlack-owned
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6
Reviive Lounge Aesthetics⊞ 6 photos
Chino · 12598 Central Ave #104 · 4.6 mi

Reviive Lounge Aesthetics

5.0 (125 Google reviews)
Membership from $179/mo

Discover The Reviive Lounge, an oasis of rejuvenating med spa procedures in the heart of Chino, California. Our mission is to revitalize both body and mind, enabling clients to unlock their natural radiance and inner glow. Signature…

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7
Cara Mia Medical Spa⊞ 3 photos
La Verne · 1512 Foothill Blvd Ste 17 · 10.0 mi

Cara Mia Medical Spa

5.0 (119 Google reviews)

At Cara Mia Medical Spa we offer personalized, results-driven aesthetic treatments in a private, comfortable setting. Specializing in services like injectables, microneedling, chemical peels, IV therapy and weight loss, our studio…

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8
Rio Glow Aesthetics and Wellness⊞ 6 photos
Rancho Cucamonga · 10737 Laurel St Ste 280 · 4.5 mi

Rio Glow Aesthetics and Wellness

5.0 (110 Google reviews)

Rio Glow Aesthetics & Wellness is a top-rated medspa in Rancho Cucamonga offering Botox, IV therapy, vitamin injections, laser hair removal, microneedling with PRP, skin tightening, and medical weight loss. We specialize in…

Women-ownedLatinx-ownedOnline booking
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9
Élevé Aesthetics⊞ 4 photos
Rancho Cucamonga · 9340 Santa Anita Ave Ste 101 · 4.9 mi

Élevé Aesthetics

5.0 (108 Google reviews)

Élevé Aesthetics Med Spa in Rancho Cucamonga, CA specializes in non-surgical treatments that restore confidence and enhance natural beauty. Our services include neurotoxins, dermal fillers, IV hydration, vitamin injections,…

Women-ownedOnline booking
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10
NuBella Med Spa⊞ 4 photos
Rancho Cucamonga · 11819 Foothill Blvd · 5.4 mi

NuBella Med Spa

5.0 (101 Google reviews)
DiamondGlowInMode

NuBella Med Spa was founded in 2018 by Nurse Practitioner Brandy Casey with the objective of providing the highest quality of patient care in the industry while creating a well-balanced aesthetic look. We started in a small salon suite…

Women-ownedOnline booking

More Medical weight loss Providers Near Ontario

Sorted by rating × reviews · distance from central Ontario
#Med spaRatingDistancePrice posted
11Lavish Wellness & Weight Loss Clinic 5.0 (95)14.4 mi—
12Aterna wellness 5.0 (94)11.8 mi—
13Pounds Off Medical Center (Doctors) 5.0 (92)7.1 mi—
14Medical Beauty and Weight Loss 5.0 (86)6.7 mi—
15The Skin Specialist 5.0 (85)6.3 mi—
16Mauve Aesthetics 5.0 (72)12.0 mi—
17Raw Aesthetic Medical Spa by Sally Aziz 5.0 (71)12.8 mi—
18Revive MedSpa and Wellness 5.0 (68)4.6 mi—
19EVER MEDICAL 5.0 (65)9.8 mi—
20Skin Nirvana Medspa 5.0 (62)15.0 mi—
21New Image Med Spa 4.9 (418)3.9 mi—
22Ajliss Medical Aesthetics 4.9 (262)12.4 mi—
23Glam Lab 4.9 (220)14.2 mi—
24Euphoria Med Spa 4.9 (189)6.7 mi—
25Aspire Weight Loss & Wellness 4.9 (189)12.0 mi—
26Magnolia Medical Aesthetics 4.9 (188)14.5 mi—
27TIA MEDSPA Diamond Bar 4.9 (174)13.5 mi—
28All Aesthetics Kare 4.9 (150)5.1 mi—
29Lunabella Beauty Skin Aesthetics and Wellness 5.0 (45)12.1 mi—
30Ahava Medspa 4.9 (149)3.9 mi—
31Serenity MD Weight Loss & Medical Spa 4.9 (136)6.6 mi—
32Advanced Institute for Plastic Surgery 4.9 (133)14.9 mi—
33Allure Image Enhancement, Inc. 4.9 (129)3.5 mi—
34Slender Me Medical 4.9 (124)14.9 mi—
35Savvy Beauty and Wellness 5.0 (38)4.8 mi—
36Sheesh Aesthetics 5.0 (36)6.6 mi—
37Radiant Face Aesthetics 5.0 (34)6.6 mi—
38Skintastic Medi Spa - Botox in Riverside | Med Spa Riverside | Hydrafacial Riverside | Lip Fillers Riverside, California 4.9 (82)15.0 mi—
39Bloom - Advanced Med Spa - Age-Defying Experts 5.0 (33)14.9 mi—
40So Cal Slim 4.9 (78)14.5 mi—
Showing 11–40 of 135
From Google reviews

What Ontario Patients Mention Most

Topics Google pulls from the reviews of the top 10 spas above, counted by mentions.

Lip filler35Skin Theory Aesthetics- Corona
Iv therapy30Rio Glow Aesthetics and Wellness
Injector21Skin Theory Aesthetics- Corona
Professional team18Jade MD Aesthetics Medical Spa
Injectables14Cara Mia Medical Spa
Welcoming staff12Élevé Aesthetics
Informative staff11Theory of Me Med Spa
Painless treatment10Cara Mia Medical Spa
Personalized recommendations9Cara Mia Medical Spa
Friendly team9Rio Glow Aesthetics and Wellness
Credentials

Who Does It in Ontario

Roles named on the websites of the top 10 spas (6 of them list their team).

Physician (MD or DO)2 of 6
Nurse practitioner (NP)4 of 6
Registered nurse (RN)4 of 6
Licensed esthetician1 of 6
Devices

Devices Ontario Spas Name

Named by 33 of the 60 spas we checked.

DeviceSpas
Ultherapy11
DiamondGlow11
Morpheus810
Sciton BBL10
Laser Genesis8
CoolSculpting8
Emsculpt6
Potenza6

Medical weight loss Near Ontario by the Numbers

135spas list medical weight loss within 15 miles
43%of the 315 med spas within 15 miles
4.82average Google rating of those spas (130 rated)

Within a 15-mile drive of Ontario, 135 med spas name medical weight loss, which is 43% of the spas in that radius.

The 130 rated spas offering it average 4.82 stars, with 102 at 4.8 or above.

How We Built This Page

Every number here comes from a spa's Google profile or its own website. Nothing is paid for.
Ranked by reviews, not ads. Google rating weighted by how many people left one.
Prices from each spa's own site. Copied from their websites, checked October 2026.
Devices and credentials only when named. If a spa doesn't say, we leave it blank.
Not phone-verified yet. Prices and staff change, so confirm when you book.
Frequently asked questions

Medical weight loss in Ontario: Common Questions

What is the best-rated medical weight loss provider in Ontario?

Theory of Me Med Spa ranks first on our list, with a 4.9 rating from 133 Google reviews.

We rank by star rating weighted by how many people left one, so a 5.0 from hundreds of patients beats a 5.0 from a handful.

How many med spas offer medical weight loss near Ontario?

We list 135 within about 15 miles of Ontario, based on each spa's Google profile and website.

Are medical weight loss providers near Ontario well rated?

The 130 rated spas within 15 miles that list medical weight loss average 4.82 out of 5 on Google, and 102 hold a 4.8 or higher.

We rank them by rating weighted by how many reviews each has.

What are the med spa rules in California?

Our California page sums up what state law and the licensing boards say about who may do med spa treatments, with a source for each rule.

Med spa rules in California

Which devices do Ontario med spas use?

33 of the 60 spas we checked name a device on their website.

The most common are Ultherapy (11), DiamondGlow (11), Morpheus8 (10).

Ask any spa that doesn't say which device it uses.