Tamara Sanderson Dissanayake, MD
NPI 1457771305 · Family Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tamara Sanderson Dissanayake, MD is a Family Medicine Physician provider in Portland, OR (NPI 1457771305).
Provider details
- NPI number
- 1457771305
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD61333136 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Clonazepam | 18 |
| Semaglutidebrand: Ozempic | 17 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 17 |
| Atorvastatin Calcium | 14 |
| Simvastatin | 14 |
| Losartan Potassium | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 12360 E Burnside StPortland, OR 97233-1042Phone: (971) 279-4800Fax: (971) 279-2051
Registry dates
- Enumerated
- 2014-04-18
- Last updated
- 2026-04-10
- Certified
- 2026-04-10
Frequently asked questions
- What is Tamara Sanderson Dissanayake's NPI number?
- Tamara Sanderson Dissanayake's National Provider Identifier (NPI) is 1457771305, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tamara Sanderson Dissanayake's specialty?
- Tamara Sanderson Dissanayake is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tamara Sanderson Dissanayake located?
- Tamara Sanderson Dissanayake's practice location on file with NPPES is 703 Ne Hancock St, Portland, OR 97212-3955.
- What is Tamara Sanderson Dissanayake's phone number?
- The practice phone number listed in the NPPES registry for Tamara Sanderson Dissanayake is (503) 230-9875.
- Does Tamara Sanderson Dissanayake accept Medicare?
- Tamara Sanderson Dissanayake is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tamara Sanderson Dissanayake's NPI active?
- Yes — Tamara Sanderson Dissanayake's NPI (1457771305) is active in the NPPES registry as of the last update on 2026-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.