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Dual GIP / GLP-1 receptor agonistFDA-approved May 2022 (Mounjaro) · November 2023 (Zepbound)Rx · Subcutaneous injection · Once weekly

Tirzepatide
(Mounjaro, Zepbound) in Thousand Oaks, CA

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

Physicians near Thousand Oaks, CA from the federal NPI registry. Ask each office whether it prescribes Mounjaro or Zepbound.[9]

  • Mounjaro: FDA-approved for type 2 diabetes.
  • Zepbound: FDA-approved for chronic weight management, and obstructive sleep apnea with obesity.
city providers
35
as of today

Same molecule (tirzepatide): Mounjaro in Thousand Oaks, Zepbound in Thousand Oaks

Other GLP-1 medicines: Ozempic in Thousand Oaks, Wegovy in Thousand Oaks, Semaglutide in Thousand Oaks

§ 02Provider directory: California
35 of 35 shown

Find a physician in Thousand Oaks.

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

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Tirzepatide by California town, physicians per town
§ 03Getting Tirzepatide in Thousand Oaks
35 providers · Thousand Oaks, CA

How to get Tirzepatide in Thousand Oaks.

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

Physicians in Thousand Oaks
35 physicians
35 physicians from the federal NPI registry in Thousand Oaks, most listed as Internal Medicine (12), Family Medicine (11) and Internal Medicine, Endocrinology, Diabetes & Metabolism (8). 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 Moorpark (20 providers), Simi Valley (22 providers) and Camarillo (29 providers).
Around the prescription in Thousand Oaks
7 listed nearby
39 dietitians, 6 nutritionists, 6 gyms, 6 fitness clubs, 4 trainers, 6 physiotherapists and 6 places to move are on record near Thousand Oaks.
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 Mounjaro and Zepbound. It acts on two gut-hormone pathways, GIP and GLP-1.

Tirzepatide is a once-weekly injection sold by Eli Lilly as Mounjaro (for type 2 diabetes) and Zepbound (for chronic weight management). It is the first approved dual GIP/GLP-1 receptor agonist. It activates two gut-hormone pathways rather than one, which is associated with greater average weight loss than single GLP-1 agonists.[2][3]

In SURMOUNT-1, adults with obesity (without diabetes) lost a mean of 20.9% of body weight on the 15 mg dose at 72 weeks, versus 3.1% on placebo. In the SURPASS-2 head-to-head diabetes trial, tirzepatide produced larger HbA1c and weight reductions than semaglutide 1 mg.[1]

Bar chart of Tirzepatide dose strengths on the FDA label: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg
Tirzepatide comes in 6 strengths: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, 15 mg. The chart shows what the label lists. A prescriber sets the dose.[1]
At a glanceMultiple (brand-specific)
Active ingredient
tirzepatide
Drug class
Dual GIP / GLP-1 receptor agonist
Manufacturer
Eli Lilly
FDA approved
May 2022 (Mounjaro) · November 2023 (Zepbound)
Approved use
Type 2 diabetes (Mounjaro) · chronic weight management (Zepbound)
Off-label use
Use outside the approved brand/indication is off-label
Administration
Subcutaneous injection · Once weekly
Available doses
2.5 mg · 5 mg · 7.5 mg · 10 mg · 12.5 mg · 15 mg
Half-life
≈ 5 days
Pregnancy
Discontinue ≥ 2 months before a planned pregnancy; may reduce oral contraceptive efficacy

Community health · CDC

Weight & metabolic health in Thousand Oaks

Thousand Oaks, California has a population of 126,966 people. The adult obesity rate in Thousand Oaks is an age-adjusted estimate of 23.2%, 5.9 percentage points below the California state rate of 29.1%. Diagnosed diabetes reaches 8% of adults in Thousand Oaks. Inactivity, meaning no leisure-time physical activity reported in the past month, affects 17.8% of adults in Thousand Oaks.

of Thousand Oaks adults have obesity
23.2%
diagnosed diabetes
8%
no regular physical activity
17.8%

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

Estimate your weight losshow tirzepatide titration works
§ 05Support around Tirzepatide in Thousand Oaks
6 dietitians

The prescription is one part. Here is the rest, in Thousand Oaks.

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

Registered dietitians

A registered dietitian builds the food plan around your prescription. Call to ask about GLP-1 nutrition plans and insurance.

Jennifer Arussi, MS, RDN
RD
Registered dietitian
100 Moody Ct Ste 200
Call 805-418-3500NPI 1114329281
Jennifer Benson, R.D
RD
Registered dietitian
329 S Moorpark Rd
Call 805-338-1445NPI 1174542237
Alyssa Callahan, MS RDN
RD
Registered dietitian
509 Marin St Ste 228
Call 805-267-9338NPI 1225553936
Alice Clark, MS, RD
RD
Registered dietitian
1748 Country Oaks Ln
Call 206-898-0453NPI 1659090272
Kathryn Collins, RD
RD
Registered dietitian · Renal
227 Janss Road
Call 805-217-8383NPI 1285813097
Liane Cox Tomich, RD
RD
Registered dietitian
5743 Corsa Ave Ste 210
Call 310-795-2241NPI 1114601879

Nutritionists

A nutritionist helps you get enough protein and fiber while the medication cuts your appetite. Call to ask what they cover.

Silvina Cox, R.D
NUTRITIONIST
Nutritionist · Education
555 Marin St
Call 805-492-1911NPI 1508276155
Rachel Park
NUTRITIONIST
Nutritionist · Education
2880 Woodflower St
Call 818-616-9966NPI 1528500295
Malorie Sweeney, MS, RD, CEDS-S
NUTRITIONIST
Nutritionist
1862 Orinda Ct
Call 786-514-2038NPI 1902177553
§ 06Clinical evidence
STEP 1 to 4 + SELECT (N = 17,604)

What the trials actually showed.

We summarize the SURMOUNT weight-management program and the SURPASS diabetes program, including the SURPASS-2 head-to-head against semaglutide. Figures are means at each trial's primary endpoint.

SURMOUNT-1 randomized 2,539 adults with obesity (without diabetes) across 72 weeks. Mean weight change was −15.0% (5 mg), −19.5% (10 mg), and −20.9% (15 mg) versus −3.1% with placebo. A majority of patients on the higher doses lost ≥20% of body weight.[2]
STEP / SELECT endpoint table2.4 mg / 68 wk
Mean weight change (15 mg)
−20.9%
SURMOUNT-1, 72 wk vs −3.1% placebo[2]
Mean weight change (5 mg)
−15.0%
SURMOUNT-1, 72 wk[2]
HbA1c reduction (T2D)
−1.8 to −2.6%
SURPASS program[4]
vs. semaglutide 1 mg
Superior
SURPASS-2, HbA1c + weight[3]
Effect size varies with baseline characteristics and adherence. Individual response may differ materially.
average tirzepatide weight loss →mapped to your starting weight
§ 07Safety & adverse events
from FDA label, sect. 6.1

Most Tirzepatide side effects are stomach and gut effects.

In Zepbound's weight trials at 5 to 15 mg, the most common side effects were nausea (25 to 29%), diarrhea (19 to 23%), constipation (11 to 17%), and vomiting (8 to 13%). Mounjaro's diabetes trials showed lower rates at the same doses.[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
12 to 29%
mild
Lowest on Mounjaro 5 mg, highest on Zepbound 10 mg
Diarrhea
12 to 23%
mild
More frequent during dose escalation
Vomiting
5 to 13%
mild
Reduced by slower titration
Constipation
6 to 17%
mild
Decreased appetite
5 to 11%
mild
Reported in Mounjaro's diabetes trials
Pancreatitis
<0.3%
serious
Discontinue if acute pancreatitis is suspected
Gallbladder disease
~1 to 2%
serious
Cholelithiasis 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 Tirzepatide 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], Eli Lilly self-pay and savings pages.

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

Tirzepatide monthly cost by how you pay
Zepbound, pharmacy retail$1,000 to $1,300per monthBrand-name retail average, May 2026[6]
Zepbound, LillyDirect self-pay$299 to $699per monthKwikPen by dose: 2.5 mg $299, 5 mg $399, 7.5 mg $499, 10 to 15 mg $699. The $449 offer on 7.5 to 15 mg applies to the first purchase and to refills within 45 days. Vials start at $299
Mounjaro, pharmacy retail$1,000 to $1,200per 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 deniedZepbound is on-label but frequently requires PA
Medicare Part D$0 to $100per monthType 2 diabetes covered. Zepbound KwikPen 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 monthCommercial insurance only; eligibility limits apply
Find Tirzepatide providers in Thousand Oaks

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

Tirzepatide in other states

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

Related GLP-1 research
§ 09Frequently asked: Tirzepatide 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.

Tirzepatide is the active ingredient in two Eli Lilly brands: Mounjaro and Zepbound. No generic tirzepatide is FDA-approved in the US. Mounjaro is approved for type 2 diabetes; Zepbound is approved for chronic weight management. They share an active ingredient but carry different approved indications, and insurers treat them as separate products.[1]