Tamara Renee Sanderson Dissanayake, MD
Family Medicine Physician · Portland, OR
Tamara Renee Sanderson Dissanayake, MD is a family medicine physician with a practice address in Portland, Oregon, and NPI 1457771305, issued on Apr 18, 2014. Check the license (Oregon MD175860, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tamara Renee Sanderson Dissanayake
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- MD175860 OR
MD61333136 WA
Self-reported in NPPES; status is on the state search - Practice location
- 703 NE Hancock St, Portland, OR 97212
- Phone
- (503) 230-9875
- Enumerated
- Apr 18, 2014
- Record last updated
- Apr 10, 2026
- Fax
- (503) 331-3441
- Medicaid ID
- 500672900 OR
- Medicare enrollment
- Enrolled (PECOS I20221216000697); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,847 in Oregon → Look up another NPI →
Also registered at 703 NE Hancock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ruby Ackermann, CHWCommunity Health Worker1033079785
- Hajjar Alturky, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1003415399
- Shantana Benally, RNRegistered Nurse1316897739
- Amiya Brazzle-Morgan, RNGeneral Practice Registered Nurse1225981079
- Perla Castillo Palacios, RDRegistered Dietitian1477136901
- John Chapman, LPCProfessional Counselor1346213584
Verify Tamara Renee Sanderson Dissanayake in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD175860Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average family medicine physician in 2024
300 Medicare Part D claims for 71 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Clonazepam18 claims
- Albuterol Sulfate Hfa17 claims
- Ozempic17 claims
- Atorvastatin Calcium14 claims
- Simvastatin14 claims
- Losartan Potassium13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Native American Rehabilitation Assoc IncPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tamara Renee Sanderson Dissanayake among 2,847 family medicine physician records in Oregon
Tamara Renee Sanderson Dissanayake, MD is one of 2,847 family medicine physician records with a practice address in Oregon. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 73% of them.
- NPI issued2014 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2009 among the 1,671 with a school on file
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
561 family medicine physician records list a practice address in Portland
They are 561 of the 42,088 NPPES records with a practice address in Portland, and 2,847 family medicine physician records in Oregon.
All 2,847 in Oregon → Every provider in Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Booker, MDPortland, OR 972121588671820
- Amy Earhart, MDPortland, OR 972121790885796
- Amelia Evans, M.D.Portland, OR 972121508092180
- Atul Gupta, MDPortland, OR 972121609220250
- Thomas Harvey, MDPortland, OR 972121487661716
- Emi Koda, DOPortland, OR 972121619256021
- Anne Skinner, DOPortland, OR 972121528124120
- Lauren Titchener, MDPortland, OR 972121962480509
Common questions
What is Tamara Renee Sanderson Dissanayake, MD's NPI number?
Tamara Renee Sanderson Dissanayake, MD's National Provider Identifier (NPI) is 1457771305, issued on Apr 18, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Tamara Renee Sanderson Dissanayake, MD located?
The NPPES record lists a practice address at 703 NE Hancock St, Portland, OR, 97212. Phone: (503) 230-9875. Providers update this record themselves, so call before visiting.
How can I verify Tamara Renee Sanderson Dissanayake, MD's license?
NPPES lists Oregon license number MD175860, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tamara Renee Sanderson Dissanayake, MD prescribe under Medicare Part D?
In 2024, Tamara Renee Sanderson Dissanayake, MD had 300 Medicare Part D claims for 71 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.