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  • Obesity & Weight
  • Metabolic
  • Functional Assessment
  • Pulmonary

Healthier, not just lighter.

Physician-led weight loss, metabolic care and functional assessment in Fountain Valley, Orange County. Modern tools, proven evidence, and a plan built around you. Pulmonary consultation also available.

Excess weight is linked to multiple conditions

  • Ventilation
  • Circulation
  • Metabolic
  • Mechanical
  • Systemic
Organ-system consequences of excess adiposity Excess adiposity sits at the center with multiple downstream conditions arranged around it, grouped by the system affected: ventilation, circulation, metabolic, mechanical and systemic. Obstructive sleep apnea Obesity hypoventilation Asthma / airway disease Pulmonary hypertension Hypertension Coronary disease Heart failure Venous blood clots Type 2 diabetes Dyslipidemia Fatty liver (MASLD) Gallbladder disease Chronic kidney disease Osteoarthritis Reflux (GERD) Lymphedema PCOS / infertility Malignancy Depression / anxiety Excess adiposity

Excess adiposity is linked to:

Ventilation

  • Obstructive sleep apnea
  • Obesity hypoventilation
  • Asthma / airway disease

Circulation

  • Pulmonary hypertension
  • Hypertension
  • Coronary disease
  • Heart failure
  • Venous blood clots

Metabolic

  • Type 2 diabetes
  • Dyslipidemia
  • Fatty liver (MASLD)
  • Gallbladder disease
  • Chronic kidney disease

Mechanical

  • Osteoarthritis
  • Reflux (GERD)
  • Lymphedema

Systemic

  • PCOS / infertility
  • Malignancy
  • Depression / anxiety
Each condition shown is associated with excess adiposity in the published literature. Malignancy refers to the thirteen cancer types the International Agency for Research on Cancer concluded in 2016 have sufficient evidence of an association with excess body fat — among them colorectal and endometrial cancer, along with postmenopausal breast, kidney, liver, pancreatic, gallbladder, ovarian, thyroid and gastric cardia cancer, oesophageal adenocarcinoma, multiple myeloma and meningioma (IARC Working Group, N Engl J Med 2016). Association is not causation in any individual patient. Original figure.

What we do

Modern Medicine For Weight, Metabolism And Fitness

We measure what is happening inside your body, explain it plainly, and treat it with approaches backed by published evidence.

Weight And Obesity Medicine

Medical weight loss led by a physician. When appropriate, FDA-approved medication is part of a plan that also protects muscle, strength and metabolic health.

Metabolic Health

Blood sugar, cholesterol, blood pressure, fatty liver and sleep apnea evaluated together, because they rarely travel alone.

Functional Assessment

VO2 max and exercise testing, body composition and lung function: objective measures of how well your body works, repeated to track progress.

Also available: pulmonary consultation for breathlessness and chronic cough, no referral needed.

What the evidence shows

Treatment Changes Outcomes

In a randomized trial of 17,604 adults with overweight or obesity and existing heart disease, a weight-management medication lowered the rate of heart attack, stroke and cardiovascular death.

Heart attack, stroke or cardiovascular death over about 40 months

20%lower relative risk
(hazard ratio 0.80,
95% CI 0.72–0.90)
1.5percentage points lower
absolute event rate
17,604adults, randomized
and placebo-controlled
SELECT trial: adults aged 45 or older with a BMI of 27 or higher and established cardiovascular disease, without diabetes, given once-weekly semaglutide 2.4 mg or placebo on top of standard care (Lincoff et al., N Engl J Med 2023; American College of Cardiology summary). Results describe the population studied and are not a prediction for any individual. The axis starts at zero. Original figure drawn from published event rates.
74%
of weight-surgery candidates have sleep apnea — most are undiagnosed
0
Insurance forms or billing codes
Why LUMENA

If You Want To Be A Partner In Your Own Health, We Are Here To Guide You

Modern And Evidence-Based

Current tools and treatments, chosen because published evidence supports them. New does not mean unproven here.

Physician-Led Care

A physician sets your plan and reads your results — not a health coach, and not an algorithm handing you a dashboard.

Transparent Pricing

You know what something costs before you agree to it. Cash and credit only.

How it works

Three Ways To Care

Start with a visit or with your results. Then, if you want, stay with us for ongoing care.

Path 1

Start with a visit

Best if something is wrong and you want it looked at.

  1. Step 01Come in and tell usWe go through your symptoms, history and concerns.
  2. Step 02You are examinedA physician examines you and takes your measurements.
  3. Step 03We order your testsOnly what your evaluation calls for.
  4. Step 04We go through the resultsYou come back, we explain what we found, and treatment starts.

Path 2

Start with your results

Best if you would rather have the numbers in hand before you sit down.

  1. Step 01Order your testing up frontYou choose your testing, pay for that testing, and it is ordered straight away.
  2. Step 02Get testedAt our office or a partner location.
  3. Step 03Come in with your resultsA physician has read them before you arrive, then goes through them with you.
  4. Step 04Measurements and anything furtherBiometrics are done at this visit, along with any additional testing you want. The remaining fees are paid here.

Path 3

Stay with us

Best if you want continuing support after your evaluation.

  1. Step 01Begin with Path 1 or Path 2Every plan starts with a physician evaluation.
  2. Step 02Choose ongoing careRegular follow-up on a monthly basis, arranged around your goals.
  3. Step 03Measure, adjust, repeatProgress is tracked and your plan is adjusted as you go.

Ask us about ongoing care

Not sure which one fits? Ask us and we will tell you.

Care Plans

Four Bundles. One Standard of Evidence.

Start where it makes sense for you — every bundle can be adjusted after your consultation.

Foundation
Your baseline

A physician-led baseline: consult, core metabolic labs, and a clear action plan.

Cardiopulmonary Complete
Fitness and breathing

Adds cardiopulmonary exercise testing and pulmonary function assessment.

Longitudinal Program
Ongoing

Re-testing every quarter and a personal progress report. Monthly options: ask us.

Also available

Pulmonary Consultation

Short of breath, or a cough that will not go away? Our physician is a pulmonary specialist. You can book directly, without a referral.

Learn More
A calm, private consultation room with warm light
Physician-Led

Independently Run. Directly Overseen.

LUMENA was founded by a practicing pulmonary and critical care physician to bring the evidence discipline of hospital medicine to weight, metabolic, and breathing care — without an insurance company deciding what counts as necessary.

Meet Your Physician

Opening soon

Fountain Valley, Orange County

18255 Brookhurst Street
Fountain Valley, CA 92708

This is our current location. Additional locations are planned.

Directions & Contact

Questions

What People Ask First

What does LUMENA treat?

Obesity and medical weight loss, metabolic health, and functional assessment such as VO2 max, body composition and exercise testing. Pulmonary consultation for breathlessness and chronic cough is also available.

Do you prescribe weight-loss medication?

When appropriate after a physician evaluation, FDA-approved medications may be part of your plan. Medication is one tool inside a broader plan that protects muscle, metabolic health and fitness.

Do you take insurance?

No. We are cash and credit only, with transparent pricing. You know what something costs before you agree to it.

Do I need a referral?

No referral is needed.

Do you offer ongoing care?

Yes. After your evaluation, you can continue with regular physician-led follow-up. Ask us about the options.

How much does it cost?

Every visit and test is priced and explained before you agree to it. No surprise bills and no hidden fees.

Can I get a second opinion if I already have a lung doctor?

Yes. We offer pulmonary second opinions as well as ongoing pulmonary care.

How do I book?

We are opening very soon. Leave your email or cell below and we will contact you personally to schedule.

Where are you, and when do you open?

Our current location is 18255 Brookhurst Street, Fountain Valley, CA 92708. We are opening very soon, with additional locations planned. Leave your email or cell below and we will contact you when we open.

Opening Very Soon

Opening Very Soon. Leave Your Email or Cell.

Appointments are not open yet. Leave your email or cell number and a person from our team — not an autoresponder — will contact you as soon as we open.

Email or cell is enough — one is all we need. You choose Gmail, Outlook, Yahoo or your email app, with your message already written to lrubio@lumenahealthclinic.com. Please do not include medical details.

Get Started

Want To Be Seen In Our First Weeks?

Leave your email or cell now. When we open, your first visit ends with a plan you understand and costs you know up front.