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Carmen Cobb-Walch, MD

Carmen Cobb-Walch, MD

Physician at Groove Health, board-certified in internal medicine and pediatrics. After a decade as a frontline hospitalist, she focused her practice on prevention and bone health. She trains new physicians as faculty at UCSF.

Bay Area, California

A – Z Guide to DEXA Medicare Guidelines 2026

A – Z Guide to DEXA Medicare Guidelines 2026

Medicare Part B pays for a DEXA bone density scan every 24 months at no cost to you, but only if you meet one of five specific conditions. Here is who qualifies, what it costs, and which billing codes matter.

How to Verify Medicare Coverage for DEXA Scans on Meds

How to Verify Medicare Coverage for DEXA Scans on Meds

On osteoporosis medication? Medicare Part B covers a monitoring DEXA scan every 24 months at $0 when your provider accepts assignment. Here are the eligibility rules, billing codes, and cost traps to avoid.

Top Magnesium-Rich Foods to Add to Your Diet

Top Magnesium-Rich Foods to Add to Your Diet

Roughly half your body's magnesium is stored in your skeleton, yet 48% of Americans get less than they need. These nine everyday foods close the gap without counting a single milligram.

Calcium in Sardines: 351 mg Per Can (If You Eat the Bones)

Calcium in Sardines: 351 mg Per Can (If You Eat the Bones)

A 3.75 oz can of sardines delivers about 351 mg of calcium, roughly 35% of your daily need, but only if you eat the soft edible bones. Here is how sardines compare to dairy and how to eat them safely.

The Complete Guide to T-Score Osteopenia Range

The Complete Guide to T-Score Osteopenia Range

A T-score between -1.0 and -2.5 puts you in the osteopenia range. Here is what that number means for your fracture risk, how doctors use FRAX alongside it, and the nutrition and training that rebuild bone.

Supplements for Bone Health

Supplements for Bone Health

Food first, supplements to fill the gap. A physician's guide to the four that actually matter for osteopenia and osteoporosis - calcium, vitamin D, protein and collagen - with real doses and safe ceilings.

How Often Do You Really Need a DEXA Scan?

How Often Do You Really Need a DEXA Scan?

How often you need a DEXA scan depends on your T-score and risk level, not the calendar. Here are the screening intervals major guidelines recommend and what Medicare will cover.

The Complete Guide to DEXA T-Score Fracture Risk

The Complete Guide to DEXA T-Score Fracture Risk

A DEXA T-score is the standard measure of bone density, but it only tells part of your fracture-risk story. Learn what the numbers mean, why some fractures happen with normal scores, and how doctors use FRAX.

Medicare Coverage for Bone Health: A Guide

Medicare Coverage for Bone Health: A Guide

Medicare can cover your bone density scans, osteoporosis medications, and fracture-prevention care, but only if you meet specific criteria. Here's who qualifies and how to keep costs low.

Picking the Best Calcium Supplement for Bone Density

Picking the Best Calcium Supplement for Bone Density

Not all calcium supplements are created equal. Here's how citrate and carbonate compare on absorption, side effects, and who benefits most from each form.