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GLP-1 receptor agonistFDA-approved December 2017 (Ozempic) · June 2021 (Wegovy)Rx · Subcutaneous injection (weekly) · oral tablet (daily) · Once weekly (injectable)

Semaglutide
(Ozempic, Wegovy, Rybelsus) in Ontario, CA

Dr. Fahad Akhtar, M.D.
Medically reviewed by Dr. Fahad Akhtar, M.D.
Physician at g1v.me, an affiliated practice

Physicians near Ontario, CA from the federal NPI registry. Ask each office whether it prescribes Ozempic, Wegovy, or Rybelsus.[9]

  • Ozempic: FDA-approved for type 2 diabetes.
  • Wegovy: FDA-approved for chronic weight management.
  • Rybelsus: FDA-approved for type 2 diabetes.
city providers
31
as of today

Same molecule (semaglutide): Ozempic in Ontario, Wegovy in Ontario

Other GLP-1 medicines: Tirzepatide in Ontario, Mounjaro in Ontario, Zepbound in Ontario

§ 02Provider directory: California
31 of 31 shown

Find a physician in Ontario.

Every entry comes from the federal NPI registry. Ask each office what it prescribes. We do not accept payment for placement.

Filter →
Type
Provider
City
Insurance / phone
Semaglutide by California town, physicians per town
§ 03Getting Semaglutide in Ontario
31 providers · Ontario, CA

How to get Semaglutide in Ontario.

31 GLP-1 prescribers and 7 local resource types are on record for Ontario, plus 3 nearby towns in the directory.

Physicians in Ontario
31 physicians
31 physicians from the federal NPI registry in Ontario, most listed as Internal Medicine (14), Family Medicine (14) and Preventive Medicine, Public Health & General Preventive Medicine (1). A licensed clinician who evaluates you decides whether an FDA-approved GLP-1 fits. Telehealth rules vary by state. The nearest towns on record are Chino (33 providers), Eastvale (19 providers) and Montclair (26 providers).
Around the prescription in Ontario
7 listed nearby
14 dietitians, 2 nutritionists, 6 gyms, 6 fitness clubs, 4 trainers, 6 physiotherapists and 6 places to move are on record near Ontario.
Medicaid (weight loss)
Diabetes only
As of April 2026, California Medicaid covers GLP-1s for diabetes but not for weight loss. Employer and private plans can still cover them; that is a plan-design choice, not a state rule.

Medicaid status above is for weight-loss use and was compiled April 2026 from KFF and public Medicaid trackers; only 13 states cover it and several are mid-change, so confirm California’s current Medicaid and plan rules before booking. GLPHelper provides information and provider matching, not medical or coverage advice.

§ 04Medication factsheet
cited · last review 2026.05.19

The molecule in Ozempic, Rybelsus, and Wegovy. The brands differ in approved use and maximum dose.

Semaglutide is a once-weekly GLP-1 receptor agonist sold under three brand names by Novo Nordisk: Ozempic and Rybelsus for type 2 diabetes, and Wegovy for chronic weight management. It mimics a gut hormone that signals satiety to the brain and slows gastric emptying. The injectable forms share the same molecule; only the approved indication and maximum dose differ.[2][3]

In the STEP-1 obesity trial, adults without diabetes taking Wegovy (semaglutide 2.4 mg) lost a mean of 14.9% of body weight at 68 weeks versus 2.4% with placebo. In the SELECT trial, semaglutide 2.4 mg reduced major adverse cardiovascular events by 20% in adults with overweight or obesity and established cardiovascular disease but without diabetes.[1]

Bar chart of Semaglutide dose strengths on the FDA label: 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, 2.4 mg, 7.2 mg (Wegovy HD)
Semaglutide comes in 6 strengths: 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, 2.4 mg, 7.2 mg (Wegovy HD). The chart shows what the label lists. A prescriber sets the dose.[1]
At a glanceMultiple (brand-specific)
Active ingredient
semaglutide
Drug class
GLP-1 receptor agonist
Manufacturer
Novo Nordisk
FDA approved
December 2017 (Ozempic) · June 2021 (Wegovy)
Approved use
Type 2 diabetes (Ozempic/Rybelsus) · chronic weight management (Wegovy)
Off-label use
Use outside the approved brand/indication is off-label
Administration
Subcutaneous injection (weekly) · oral tablet (daily) · Once weekly (injectable)
Available doses
0.25 mg · 0.5 mg · 1 mg · 1.7 mg · 2.4 mg · 7.2 mg (Wegovy HD)
Half-life
≈ 7 days
Pregnancy
Discontinue ≥ 2 months before a planned pregnancy

Community health · CDC

Weight & metabolic health in Ontario

Ontario, California has a population of 175,265 people. The adult obesity rate in Ontario is an age-adjusted estimate of 33.5%, 4.4 percentage points above the California state rate of 29.1%. Diagnosed diabetes reaches 12.4% of adults in Ontario. Inactivity, meaning no leisure-time physical activity reported in the past month, affects 28.1% of adults in Ontario.

of Ontario adults have obesity
33.5%
diagnosed diabetes
12.4%
no regular physical activity
28.1%

Age-adjusted estimates for Ontario, community figures, not individual risk. CDC PLACES, 2025 release.

Estimate your weight losswhat to expect week by week
§ 05Support around Semaglutide in Ontario
6 gyms

The prescription is one part. Here is the rest, in Ontario.

Trials of semaglutide paired the drug with diet counseling and regular activity. Every name below is a real listing near Ontario, CA, ordered as the registry lists them, never by who pays us.

Gyms near you

A gym gives you the regular movement that keeps muscle while the weight comes off.

24 Hour Fitness
GYM
4.6 on Google · 1,409 reviews
2580 S Archibald Ave
Website
Chuze Fitness
GYM
4.6 on Google · 1,166 reviews
9080 Foothill Blvd
Website
Anytime Fitness
GYM
5.0 on Google · 1,030 reviews
106 Mutual St
Website
Planet Fitness
GYM
4.0 on Google · 869 reviews
2446 S Vineyard Ave
Website
Anytime Fitness
GYM
4.7 on Google · 425 reviews
7890 Haven Ave Ste 22
Website
The Camp Transformation Center
GYM
4.9 on Google · 203 reviews
3450 E Ontario Rnch Rd Ste 3
Website

Fitness clubs and recreation centers

Fitness clubs and recreation centers run classes and pools, an easier start than a weight room.

THE GYM Ontario
FITNESS
4.6 on Google · 101 reviews
130 W G St
Website
6th Sense Gym
FITNESS
4.0 on Google · 47 reviews
3CFR+94, 790 Ferrari Ln
Website
Chuze Fitness
GYM
4.6 on Google · 1,166 reviews
9080 Foothill Blvd
Website
Planet Fitness
GYM
4.0 on Google · 869 reviews
2446 S Vineyard Ave
Website
Anytime Fitness
GYM
4.7 on Google · 425 reviews
7890 Haven Ave Ste 22
Website
The Camp Transformation Center
GYM
4.9 on Google · 203 reviews
3450 E Ontario Rnch Rd Ste 3
Website
§ 06Clinical evidence
STEP 1 to 4 + SELECT (N = 17,604)

What the trials actually showed.

We summarize the STEP weight-management program, the SUSTAIN diabetes program, and the SELECT cardiovascular outcomes trial. Figures are means at each trial's primary endpoint.

STEP-1 randomized 1,961 adults with overweight or obesity (without diabetes) to semaglutide 2.4 mg or placebo for 68 weeks. Mean weight change was −14.9% with semaglutide versus −2.4% with placebo; 86% of treated patients lost ≥5% of body weight.[2]
STEP / SELECT endpoint table2.4 mg / 68 wk
Mean weight change (Wegovy 2.4 mg)
−14.9%
STEP-1, 68 wk vs −2.4% placebo[2]
Patients losing ≥5% body weight
86%
STEP-1, 2.4 mg[2]
Major adverse cardiac events
−20%
SELECT, HR 0.80[3]
HbA1c reduction (T2D)
−1.4 to −1.8%
SUSTAIN program[4]
Effect size varies with baseline characteristics and adherence. Individual response may differ materially.
average semaglutide weight loss →mapped to your starting weight
§ 07Safety & adverse events
from FDA label, sect. 6.1

Most Semaglutide side effects are stomach and gut effects.

In Wegovy's weight trials at 2.4 mg, the most common side effects were nausea (44%), diarrhea (30%), vomiting (24%), and constipation (24%). Ozempic's lower diabetes doses showed lower rates.[1] Serious events were rare but include pancreatitis, gallbladder disease, and an FDA boxed warning regarding thyroid C-cell tumors based on rodent data.[1]

Boxed warning. Boxed warning: risk of thyroid C-cell tumors. Contraindicated in patients with a personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN-2).
Effect
Frequency
Severity
Note
Nausea
15.8 to 44%
mild
Lowest on Ozempic 0.5 mg, highest on Wegovy 2.4 mg
Diarrhea
8.5 to 30%
mild
More frequent during dose escalation
Vomiting
5 to 24%
mild
Reduced by slower titration
Constipation
3.1 to 24%
mild
Abdominal pain
5.7 to 20%
moderate
Pancreatitis
<0.3%
serious
Discontinue if acute pancreatitis is suspected
Gallbladder disease
0.4 to 2.5%
serious
Gallstones. Lowest on Ozempic 1 mg, highest on Wegovy tablets. Risk rises with rapid weight loss
Thyroid C-cell tumors
rodent data
boxed warning
Contraindicated with MTC or MEN-2 history
§ 08Cost & coverage, published, not gated
USD · monthly

What Semaglutide costs, by how you pay.

The price you pay depends on your insurance plan, your diagnosis, and how you buy. Manufacturer self-pay programs cost far less than pharmacy retail. Here are the ranges.

Data sources: GoodRx national retail survey[6], CMS Part D formulary files[5], Novo Nordisk self-pay and savings pages.

Self-pay and savings card prices checked . Retail averages from May 2026.

Semaglutide monthly cost by how you pay
Wegovy, pharmacy retail$1,610 to $1,788per monthBrand-name retail average, May 2026[6]
Wegovy, NovoCare self-pay$349 to $399per monthPen $349, Wegovy HD 7.2 mg $399. Pill $149 to $299
Ozempic, pharmacy retail$1,476per monthBrand-name retail average, May 2026[6]
Commercial insurance (T2D)$25 to $250per month copayUsually covered for diabetes with prior authorization
Commercial insurance (weight)Often deniedWegovy is on-label but frequently requires PA and is denied
Medicare Part D$0 to $100per monthType 2 diabetes covered. Wegovy for weight management is $50 a month through the Medicare GLP-1 Bridge, Jul 2026 to Dec 2027[5]
Manufacturer savings cardas low as $25per monthOzempic and Wegovy cards, commercial insurance only, up to $100 a month in savings
Find Semaglutide providers in Ontario

Physicians from the federal NPI registry. Ask each office whether it prescribes Semaglutide.

Semaglutide in other states

Physicians from the federal NPI registry in the states we cover. Ask each office whether it prescribes Semaglutide.

Related GLP-1 research
§ 09Frequently asked: Semaglutide in California

The questions people ask before they book.

Answers reviewed by the glp·helper Medical Team. Citations link to primary sources, never marketing copy.

Semaglutide is the active ingredient in three Novo Nordisk brands: Ozempic, Wegovy, and Rybelsus. No generic semaglutide is FDA-approved in the US. Ozempic and Rybelsus are approved for type 2 diabetes; Wegovy is approved for chronic weight management at a higher maximum dose (7.2 mg/week, Wegovy HD). Insurers treat the brands as separate drugs.[1]