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CHINENYENWA ONYEMAECHI MD
NPI 1396087052
Psychiatry & Neurology - Psychiatry in Hillsboro, OR

Active since March 20, 2013PECOS EnrolledAccepts Medicare Assignment
335 SE 8TH AVE, HILLSBORO, OR 97123(503) 681-1919 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 10, 2025, Feb 13, 2021, Oct 9, 2020 and 2 more (5 updates tracked since 2017).

About Chinenyenwa Onyemaechi Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHINENYENWA ONYEMAECHI MD (NPI 1396087052) is an individual psychiatry provider in Hillsboro, Oregon, licensed in Oregon (MD188101) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS, is affiliated with Legacy Emanuel Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1396087052
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameCHINENYENWA ONYEMAECHICredential: MD
Location Address335 SE 8TH AVEHillsboro, OR 97123-4246
Mailing Address1400 Sw 5th Ave Ste 500Portland, OR 97201-5537 · (503) 494-8417 · Fax (503) 494-4455
Phone(503) 681-1919
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateMarch 20, 2013
Last NPPES UpdateNovember 10, 20255 updates tracked since enumeration
NPPES CertifiedNovember 10, 2025
✔ NPI 1396087052 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in OR · MD188101✔ Licensed in PA · MD468783
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
335 SE 8TH AVE, Hillsboro, OR 97123
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1555 N Duke StLancaster, PA 17602-2250 · Phone (717) 544-5831 · Fax (717) 544-5987
Location 21225 NE 2nd AvePortland, OR 97232-2003 · Phone (503) 944-8000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BridgeSpan Health Company, Cigna Healthcare, Moda Health Plan, Inc. and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Chinenyenwa Onyemaechi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234438433
PECOS Enrollment IDI20180823001683, I20191031000936
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

6

Medicare enrollment records show Chinenyenwa Onyemaechi reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Emanuel Hospital & Health Center
15 mi
General Acute Care Hospital
2801 N GANTENBEIN AVE
Portland, OR 97227
  • Reassigned Medicare billing, Oregon enrollment
  • 719 clinicians in this Medicare group
NPI 1831112358 (503) 413-2200
Butler Medical Providers
2,146 mi
Family Medicine
188 ENCLAVE DR
New Castle, PA 16105
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 482 clinicians in this Medicare group
NPI 1598132599 (833) 995-0122
Caromont Medical Group Inc
2,268 mi
Family Medicine
305 W. COLLEGE AVE
Boiling Springs, NC 28017
  • Reassigned Medicare billing, North Carolina enrollment
  • 673 clinicians in this Medicare group
NPI 1205079290 (704) 434-2281
Lancaster General Medical Group
2,351 mi
Family Medicine
99 MASONIC DR, SUITE 101
Elizabethtown, PA 17022
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 727 clinicians in this Medicare group
NPI 1649517236 (717) 689-4243
Lancaster General Hospital
2,369 mi
Psychiatry
555 N DUKE ST
Lancaster, PA 17602
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 34 clinicians in this Medicare group
NPI 1306961800 (717) 544-5511
Montgomery County Mh-Mr Emergency Service
2,412 mi
Psychiatric Hospital
50 BEECH DR
Norristown, PA 19403
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 27 clinicians in this Medicare group
NPI 1386637734 (610) 279-6100

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
11 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380007
Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$176.88 typical visit price
range $58.99 – $176.88
Typical copayment $44.22 (range $14.74 – $44.22)
Most-billed visit code 99205
Established Patient
$73.28 typical visit price
range $19.32 – $144.79
Typical copayment $18.32 (range $4.83 – $36.19)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

TOBY J COGHILL
Specialist/Technologist, Other (Surgical Assistant)
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1111
DR. RODNEY WAYNE DODGE M.D.
Emergency Medicine
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1111
DR. NATALIE KU MD
Radiology (Diagnostic Radiology)
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1000
BETHANY LONGAKER MS, CCC-SLP
Speech-Language Pathologist
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1605
JENNIFER LEE JOHNSON MPT
Physical Medicine & Rehabilitation
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 640-6064
SCOT T SMITH MD
Internal Medicine
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1111
MARIE PIELAGE PT
Physical Therapist (Orthopedic)
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 640-6006
HELENA VENTOSA CAPELL MD
Student in an Organized Health Care Education/Training Program
335 SE 8TH AVE
HILLSBORO, OR 97123
Washington County (503) 681-1111

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chinenyenwa Onyemaechi's NPI number?

The NPI number for Chinenyenwa Onyemaechi is 1396087052. It was assigned to this individual provider in the NPPES registry on March 20, 2013.

Where is Chinenyenwa Onyemaechi located?

Chinenyenwa Onyemaechi practices at 335 SE 8th Ave, Hillsboro, OR 97123. The listed phone number is (503) 681-1919.

What is Chinenyenwa Onyemaechi's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Chinenyenwa Onyemaechi enrolled in Medicare?

Yes. Chinenyenwa Onyemaechi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Chinenyenwa Onyemaechi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chinenyenwa Onyemaechi reassigns Medicare benefits to 6 organizations: Legacy Emanuel Hospital & Health Center (Portland, OR), Butler Medical Providers (New Castle, PA), Caromont Medical Group Inc (Boiling Springs, NC), Lancaster General Medical Group (Elizabethtown, PA), Lancaster General Hospital (Lancaster, PA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Chinenyenwa Onyemaechi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Chinenyenwa Onyemaechi accept?

Health plans from BridgeSpan Health Company, Cigna Healthcare, Moda Health Plan, Inc. and Regence BlueCross BlueShield of Oregon list Chinenyenwa Onyemaechi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Chinenyenwa Onyemaechi affiliated with any hospitals?

According to CMS data, Chinenyenwa Onyemaechi is affiliated with Legacy Emanuel Medical Center.

When was this NPI record last updated?

The NPPES record for Chinenyenwa Onyemaechi was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.