Dr. Billy W. Loo, MD, PhD

Dr. Loo practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Loo's NPI, 1720167711, was assigned on November 2, 2006. Dr. Loo graduated from UC Davis School of Medicine in 2000. Dr. Loo holds California license A76374.

Dr. Loo's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Dr. Loo's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dr. Loo is also affiliated with Stanford Health Care Tri-Valley. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Loo to 1 more hospital and 1 group practice or clinic, each named with a free account. Dr. Loo's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Loo practices, 4 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. Loo's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Loo is board certified in radiation oncology by the American Board of Radiology. Dr. Loo is licensed in California.

Dmand AI lists brain cancer radiation, lung cancer radiation and lymphoma radiation among the conditions Dr. Loo treats.

CMS data shows 332 Medicare services from Dr. Loo across 10 procedure codes in 2024, for 128 Medicare patients. Medicare paid $37,488 for them.

CMS counts 128 Medicare patients who saw Dr. Loo in 2024. The largest group is 75 to 84, with 48 patients. 75% of them have cancer, and 73% have high cholesterol. 20% are also on Medicaid. Their average risk score is 2.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Loo's median patient age at 68, with 46% women.

In 2017, Dr. Loo wrote 15 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $73 in total drug cost. In 2016, CMS named 19 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Loo for performance year 2024, reported as part of a group. Dr. Loo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Loo as offering telehealth.

Dmand AI links 271 papers to Dr. Loo, published from 2003 to 2025. 2016 was the busiest year, with 29. The most frequent topics are Lung Neoplasms, Radiosurgery and Carcinoma, Non-Small-Cell Lung. Dr. Loo has published most often in Int J Radiat Oncol Biol Phys. Dr. Loo's most frequent co-authors are Maximilian Diehn, MD, PhD, Quynh-Thu Xuan Le, MD and Michael F. Gensheimer, MD.

Dmand AI links Dr. Loo to 9 clinical trials, 3 of them phase 1 studies. 1 is still active or recruiting. Conditions studied include Lung Neoplasms, Thoracic Neoplasms and Adenocarcinoma, Bronchiolo-Alveolar. Stanford University sponsors the most, 5.

CMS Open Payments shows 36 general payments to Dr. Loo from 10 drug and device companies from 2016 to 2025. Honoraria make up the largest share, 54% of the total. Varian Medical Systems, Inc. paid the most, $10,903.

Dmand AI lists 1 award for Dr. Loo, most recently CMS Stage 1 EHR in 2013.

Dr. Loo graduated from UC Davis School of Medicine in 2000. Dr. Loo is a member of ASTRO, ASTRO State-of-the-Art Techniques Symposium, International Association for the Study of Lung Cancer and RSNA.

Dr. Loo is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.