James William Siefert
Case Manager/Care Coordinator · Portland, OR
James William Siefert is a case manager/care coordinator with a practice address in Portland, Oregon, and NPI 1467661389, issued on May 21, 2007. Check the license with the Oregon board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- James William Siefert
- Primary taxonomy
- Case Manager/Care Coordinator 171M00000X
- Practice location
- 907 NE 47TH Ave, Portland, OR 97213
- Phone
- (360) 513-7382
- Enumerated
- May 21, 2007
- Record last updated
- Sep 11, 2025
- Entity
- Type 1 · individual
8 nearest case manager/care coordinator records → All 4,184 in Oregon → Look up another NPI →
Verify James William Siefert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
James William Siefert among 4,184 case manager/care coordinator records in Oregon
James William Siefert is one of 4,184 case manager/care coordinator records with a practice address in Oregon. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than under 1% of them.
- NPI issued2007 · under 1% of these records are older, 90% newer
- In a Medicare fileNo · under 1% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 171M00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,319 case manager/care coordinator records list a practice address in Portland
They are 1,319 of the 42,088 NPPES records with a practice address in Portland, and 4,184 case manager/care coordinator records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,184 in Oregon → Every provider in Portland → Case Manager/Care Coordinator nationwide →
The 8 case manager/care coordinator records with the nearest ZIP codes
- Jesus GonzalesPortland, OR 972131326582172
- Kim HernandezPortland, OR 972131922781715
- Aleesha HoadleyPortland, OR 972131205779048
- Kenneth JerinPortland, OR 972131659054443
- Izzy LefebvrePortland, OR 972131831870708
- Alyson MeyerPortland, OR 972131154529998
- Viviana RodriguezPortland, OR 972131376395392
- Nancy SandersPortland, OR 972131336278324
Common questions
What is James William Siefert's NPI number?
James William Siefert's National Provider Identifier (NPI) is 1467661389, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is James William Siefert located?
The NPPES record lists a practice address at 907 NE 47TH Ave, Portland, OR, 97213. Phone: (360) 513-7382. Providers update this record themselves, so call before visiting.
How can I verify James William Siefert's license?
Search the Oregon board that licenses this profession; the NPPES record confirms identity 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. 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.