Dr. Raymond Charles Tan, MD

Dr. Tan practices at Meridian Park Radiation Oncolog Center, Inc in Tualatin, Oregon.

Dr. Tan's NPI, 1104809946, was assigned on November 25, 2005. Dr. Tan graduated from Tufts University School Of Medicine in 1999. Dr. Tan holds California license A73252.

Dr. Tan's primary practice is Meridian Park Radiation Oncolog Center, Inc, at 6489 SW Borland Rd, Tualatin, OR 97062 in Washington County. The practice phone is (503) 692-4843.

Dr. Tan's primary practice is Meridian Park Radiation Oncolog Center, Inc in Tualatin, Oregon. Dr. Tan is also affiliated with Legacy Meridian Park Medical Center. The medical group on file is Meridian Park Radiation Oncology. Dmand AI also links Dr. Tan to 2 more medical groups and 1 physician office, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 2 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Tan is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Tan's licenses on file in 3 states: California, Oregon and Washington.

Dmand AI lists anal cancer radiation, bone cancer radiation, brain cancer radiation, brain tumor radiation, breast cancer radiation, cancer radiation-upper GI, cervical cancer radiation and colorectal cancer radiation among the conditions Dr. Tan treats.

CMS data shows 1,447 Medicare services from Dr. Tan across 18 procedure codes in 2024, for 155 Medicare patients. Medicare paid $103,186 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 155 Medicare patients who saw Dr. Tan in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have cancer, and 72% have high blood pressure. 22% are also on Medicaid. Their average risk score is 1.66, 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. Tan's median patient age at 73, with 27% women.

In 2024, Dr. Tan wrote 203 Medicare Part D claims for 60 patients. 94% of them were for generic drugs. CMS names the drug for 106 of them, across 5 drugs with 11 or more claims each, at $3,258 in total drug cost. In 2023, CMS named 33 claims across 2 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Tan for performance year 2024, reported as part of a group. Dr. Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 97 general payments to Dr. Tan from 41 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $346.

Dr. Tan graduated from Tufts University School Of Medicine in 1999.

Dr. Tan is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.