Peter Case Olson, MD
Internal Medicine Physician · Seattle, WA
Peter Case Olson, MD is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1649625955, issued on Apr 25, 2016. Check the license (Washington MD60915050, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Peter Case Olson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD60915050 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4540 Union Bay PL NE, Seattle, WA 98105
- Phone
- (206) 320-8050
- Enumerated
- Apr 25, 2016
- Record last updated
- Jun 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (206) 320-8048
- Medicaid ID
- 1649625955 WA
- Medicare enrollment
- Enrolled (PECOS I20191104000534); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 4540 Union Bay PL NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tracey Alta, LICSWClinical Social Worker1366804049
- Hsiang-Hwa Chen, DOFamily Medicine Physician1043539968
- Catherine Damey, MDFamily Medicine Physician1891704045
- Brianna Grinnell, DOFamily Medicine Physician1235620378
- Nelson McKay, MDFamily Medicine Physician1558855452
- Jillian Moshay, MDFamily Medicine Physician1982917316
Verify Peter Case Olson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60915050Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
297 Medicare Part D claims for 115 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium13 claims
- Atorvastatin Calcium11 claims
- Lisinopril11 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 2 group practices
- Swedish Health ServicesSeattle, WA
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter Case Olson among 3,079 internal medicine physician records in Washington
Peter Case Olson, MD is one of 3,079 internal medicine physician records with a practice address in Washington. 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2016 · median 2006 among the 1,852 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
821 internal medicine physician records list a practice address in Seattle
They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Seattle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Emily Cooper, MDSeattle, WA 981051780614370
- Ellen Mary Cosgrove, MDSeattle, WA 981051174539738
- David Dugdale, M.D.Seattle, WA 981051265529895
- Anne EackerSeattle, WA 981051720164577
- Jaime Friedman, M.D.Seattle, WA 981051619971512
- Vara Kraft, M.D.Seattle, WA 981051174509293
- Frank Mitchell, MDSeattle, WA 981051891804977
- Joan Olson, MDSeattle, WA 981051629070123
Common questions
What is Peter Case Olson, MD's NPI number?
Peter Case Olson, MD's National Provider Identifier (NPI) is 1649625955, issued on Apr 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Peter Case Olson, MD located?
The NPPES record lists a practice address at 4540 Union Bay PL NE, Seattle, WA, 98105. Phone: (206) 320-8050. Providers update this record themselves, so call before visiting.
How can I verify Peter Case Olson, MD's license?
NPPES lists Washington license number MD60915050, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter Case Olson, MD prescribe under Medicare Part D?
In 2024, Peter Case Olson, MD had 297 Medicare Part D claims for 115 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.