Lorna Marie Thornton, MD

Internal Medicine

(650) 498-6500Menlo Park, CA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

With over 27 years in internal medicine, Lorna Marie Thornton, MD is a long-established internist in Menlo Park. Trained at University of California, San Francisco School of Medicine (class of 1999), she has been practicing for over 27 years. CMS Medicare data shows her patients commonly have high cholesterol, hypertension, and arthritis.

At a glance

  • Prescribes opioids less than 51% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 3,565 Internal Medicine providers in CASee all Internal Medicine in Menlo Park27+ years experienceNPI since 2006

Older · 743dNPPES updated 2024-04-23 · verify on CMS

Contact & Location

Practice Location

1300 Crane St, Menlo Park, CA 94025-4260

CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor prescribes opioid pain medications conservatively.

Opioid Rx

↓ Lower = better

0.83%

California avg: 5.2 · US avg: 5.1

Higher than most doctors nationally(-4.3 pts)

Typical range among reporting doctors in California

0.83% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Medicare Patients

228

Unique beneficiaries

Standard volume

Prescription Recipients

221

Patients prescribed

Prescriptions Written

1,800

Total claims

Total Medicare drug cost: $238k

Percentile rankings compared against 9,360 reporting peers in California.

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages High Cholesterol, Hypertension, and Arthritis.

High Cholesterol
70%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%
Hypertension
Lower than avg (-12%)58%

High blood pressure — a leading risk factor for heart disease and stroke

US avg: 70.2%

↓ Fewer patients than average (-12%) — less common here

Arthritis
Lower than avg (-13%)36%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↓ Fewer patients than average (-13%) — less common here

Osteoporosis
Higher than avg (+10%)28%

Weakened bones that are more prone to fractures, common in older adults

US avg: 18.1%

↑ More patients than average (+10%) — a focus area for this doctor

Ischemic Heart Disease
Lower than avg (-10%)22%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

US avg: 31.7%

↓ Fewer patients than average (-10%) — less common here

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

Industry Payment Transparency

$16 received from industry

1 transaction reported in 2018 ·Low tier

View on CMS Open Payments →

Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.

Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2018, attributed to Lorna Marie Thornton's NPI.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 1999

    University of California, San Francisco School of Medicine

  2. Board certified · Apr 22, 2024

    CMS-verified certification date

  3. 27 years in practice

    Experienced

Internal MedicineAllopathic & Osteopathic Physicians

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Taxonomy: 207R00000X

Education & Training

University of California, San Francisco School of Medicine (Class of 1999)

Practice Footprint

Primary hospital affiliation: Acute Care Hospitals

CMS Certification Number: 200034

View hospital on Medicare Care Compare

Virtual Internal Medicine Care With Lorna Marie Thornton

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Lorna Marie Thornton for cholesterol management, blood pressure monitoring, arthritis follow-ups — no travel to Menlo Park required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Lorna Marie Thornton

Dr. Thornton is listed as active in the NPI registry with telehealth listed in Menlo Park, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (650) 498-6500.

Verified across 5 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2018 · CMS Physician Comparator. See Data Methodology.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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