Ellen Louise Singer, M.D.
Internal Medicine Physician · Portland, OR
Ellen Louise Singer, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1689687279, issued on Aug 14, 2006. Check the license (Oregon MD19574, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ellen Louise Singer
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD19574 OR
DR.0068138 CO
188201 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3500 N Interstate Ave, Portland, OR 97227
- Phone
- (503) 331-6116
- Enumerated
- Aug 14, 2006
- Record last updated
- Jan 21, 2026
- Medicare enrollment
- Enrolled (PECOS I20071221000404); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 3500 N Interstate Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Krystle Alligood, BCBA, LBABehavior Analyst1730536913
- Madalene Anderson, FNPFamily Nurse Practitioner1659485779
- Diane Bader, LCSWClinical Social Worker1700109717
- Alistair Bahar, M.D.Internal Medicine Physician1306918842
- Peggy Bradley Pearson, ANPAdult Health Nurse Practitioner1114106598
- Robert Buschman, P.A.Physician Assistant1750495776
Verify Ellen Louise Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD19574Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
323 Medicare Part D claims for 222 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Paxlovid39 claims
- Cephalexin28 claims
- Doxycycline Monohydrate20 claims
- Rosuvastatin Calcium15 claims
- Amoxicillin-Clavulanate Potass13 claims
- Estradiol13 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
- Kaiser Foundation Health Plan OF The NorthwestClackamas, OR
- Orchid Oakridge Clinic PCOakridge, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Louise Singer among 2,116 internal medicine physician records in Oregon
Ellen Louise Singer, M.D. is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1990 · median 2008 among the 1,232 with a school on file
- Record last updated2026 · 58% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Douglas Beers, MDPortland, OR 972271720055197
- Denise Bilbao, M.D.Portland, OR 972271538173943
- Duane Burroughs, MDPortland, OR 972271134197213
- Smitha Chadaga, MDPortland, OR 972271952362295
- Darcy Deering, M.D.Portland, OR 972271205801065
- Lori Farrell, M.D.Portland, OR 972271235103987
- Elise Fulsang, MDPortland, OR 972271952305385
- Ameet Jhooty, M.DPortland, OR 972271295795938
Common questions
What is Ellen Louise Singer, M.D.'s NPI number?
Ellen Louise Singer, M.D.'s National Provider Identifier (NPI) is 1689687279, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Louise Singer, M.D. located?
The NPPES record lists a practice address at 3500 N Interstate Ave, Portland, OR, 97227. Phone: (503) 331-6116. Providers update this record themselves, so call before visiting.
How can I verify Ellen Louise Singer, M.D.'s license?
NPPES lists Oregon license number MD19574, 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 Ellen Louise Singer, M.D. prescribe under Medicare Part D?
In 2024, Ellen Louise Singer, M.D. had 323 Medicare Part D claims for 222 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.