NPPES file of Aug 9, 2026

Xiomara Michelle Castillo Rivera, MD

Internal Medicine Physician · Newport, OR

Xiomara Michelle Castillo Rivera, MD is an internal medicine physician with a practice address in Newport, Oregon, and NPI 1740866599, issued on Mar 22, 2021. Check the license (Oregon MD227151, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1740866599
Name
Xiomara Michelle Castillo Rivera
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
MD227151 OR
75107 AZ
26810 NV
Self-reported in NPPES; status is on the state search
Practice location
36 SW Nye St, Newport, OR 97365
Phone
(541) 265-4947
Enumerated
Mar 22, 2021
Record last updated
Feb 11, 2026
Medicare enrollment
Enrolled (PECOS I20251119002772); accepts Medicare assignment
Medical or professional school
Ponce School Of Medicine, 2019
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →

Also registered at 36 SW Nye St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Marcia Adams, M.D.Family Medicine Physician1063469484
  2. Sandra AdamsCommunity Health Registered Nurse1689648024
  3. Sylvia Aguilar, CMANurse's Aide1235941089
  4. Josefina Albino-Tamayo, CMANurse's Aide1265116727
  5. Barbara Alexander, R.N.Mental Health Counselor1801857800
  6. Ann AllardOther Technician1245982586

Verify Xiomara Michelle Castillo Rivera in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD227151    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. County OF LincolnNewport, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Xiomara Michelle Castillo Rivera among 2,116 internal medicine physician records in Oregon

Xiomara Michelle Castillo Rivera, MD 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 2021, is newer than 91% of them.

  • NPI issued2021 · 91% of these records are older, 7% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2019 · 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).

12 internal medicine physician records list a practice address in Newport

They are 12 of the 637 NPPES records with a practice address in Newport, and 2,116 internal medicine physician records in Oregon.

All 2,116 in Oregon → Every provider in Newport → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Anna Hays, M.D.Newport, OR 973651083630842
  2. James Hylton, MD.Newport, OR 973651639235070
  3. Michael Javid, DONewport, OR 973651750768511
  4. David Long, M.D.Newport, OR 973651598708455
  5. Yen Nguyen, D.O.Newport, OR 973651982646899
  6. Debra Pankiewicz, MDNewport, OR 973651013449966
  7. Thomas Rafalski, M.D.Newport, OR 973651336176734
  8. Jerry Robbins, M.D.Newport, OR 973651194874040

Common questions

What is Xiomara Michelle Castillo Rivera, MD's NPI number?

Xiomara Michelle Castillo Rivera, MD's National Provider Identifier (NPI) is 1740866599, issued on Mar 22, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Xiomara Michelle Castillo Rivera, MD located?

The NPPES record lists a practice address at 36 SW Nye St, Newport, OR, 97365. Phone: (541) 265-4947. Providers update this record themselves, so call before visiting.

How can I verify Xiomara Michelle Castillo Rivera, MD's license?

NPPES lists Oregon license number MD227151, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.