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ONYEKACHI JOSEPH OYIRIARU MD
NPI 1093144875
Psychiatry & Neurology - Psychiatry in Norristown, PA

Active since November 02, 2013PECOS EnrolledAccepts Medicare Assignment
1201 DEKALB ST, NORRISTOWN, PA 19401(610) 277-7600(610) 275-0216 Get Directions Write a Review

NPPES record last updated: January 8, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 8, 2019, Jan 3, 2019 (2 updates tracked since 2019).

About Onyekachi Joseph Oyiriaru Md NPPES

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

ONYEKACHI JOSEPH OYIRIARU MD (NPI 1093144875) is an individual psychiatry provider in Norristown, Pennsylvania, licensed in Pennsylvania (MD463536) and active in the NPI registry since November 2013. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1093144875
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameONYEKACHI JOSEPH OYIRIARUCredential: MD
Location Address1201 DEKALB STNorristown, PA 19401-3415
Mailing Address1100 Powell StNorristown, PA 19401-3820 · (610) 277-4600 · Fax (610) 275-0216
Phone(610) 277-7600
Fax(610) 275-0216
Sole ProprietorYes
Medical School CMSOtherGraduated 2002
Enumeration DateNovember 2, 2013
Last NPPES UpdateJanuary 8, 20192 updates tracked since enumeration
✔ NPI 1093144875 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in PA · MD463536
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.
1201 DEKALB ST, Norristown, PA 19401
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Secondary Practice Locations 2

Location 11100 Powell StNorristown, PA 19401 · Phone (610) 277-4600 · Fax (610) 275-0216
Location 2556 S. Goddard Blvd., Suite 141King of Prussia, PA 19406-1940 · Phone (610) 277-7600

Other Identifiers 1

OtherMD463536PA · License

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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

Onyekachi Joseph Oyiriaru 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 ID2264778752
PECOS Enrollment IDI20190103001443, I20230201000138
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

4

Medicare enrollment records show Onyekachi Oyiriaru reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Central Behavioral Health
0.1 mi
Mental Health (Including Community Mental Health Center)
1100 POWELL ST
Norristown, PA 19401
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 52 clinicians in this Medicare group
NPI 1568567071 (610) 277-4600
Intercommunity Action, Inc
8.8 mi
Community/Behavioral Health
6122 RIDGE AVE
Phila, PA 19128
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 12 clinicians in this Medicare group
NPI 1730224445 (215) 487-1330
Prospect Health Access Network, Inc.
12 mi
Obstetrics & Gynecology
2100 KEYSTONE AVE, SUITE 707
Drexel Hill, PA 19026
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 654 clinicians in this Medicare group
NPI 1255786729 (610) 626-7070
Legacy Treatment Services Inc
29 mi
Community/Behavioral Health
1289 ROUTE 38, SUITE #203
Hainesport, NJ 08036
  • Reassigned Medicare billing, New Jersey enrollment
  • 20 clinicians in this Medicare group
NPI 1730594656 (609) 288-3067

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.

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
64 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19401 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
$180.99 typical visit price
range $59.88 – $180.99
Typical copayment $45.24 (range $14.97 – $45.24)
Most-billed visit code 99205
Established Patient
$74.47 typical visit price
range $19.30 – $147.29
Typical copayment $18.61 (range $4.82 – $36.82)
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.

KEVIN COMERFORD
Counselor
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
MADYSEN SCHAEFER
Counselor
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
MAHMOOD DADVAND M.D.
Psychiatry & Neurology (Psychiatry)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
DR. KATHERINE E SACKS PH.D.
Psychologist (Clinical)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
CHRISTINE M JOHANNESSON M.S.W., L.C.S.W.
Social Worker (Clinical)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
SARA BENSON LPC
Counselor (Professional)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
WILLIAM WALTER PROCYSON LPC
Counselor (Professional)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270
JULIE KNUDSEN LSW
Social Worker (Clinical)
1201 DEKALB ST
NORRISTOWN, PA 19401
Montgomery County (610) 279-9270

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 Onyekachi Oyiriaru's NPI number?

The NPI number for Onyekachi Oyiriaru is 1093144875. It was assigned to this individual provider in the NPPES registry on November 2, 2013.

Where is Onyekachi Oyiriaru located?

Onyekachi Oyiriaru practices at 1201 Dekalb St, Norristown, PA 19401. The listed phone number is (610) 277-7600.

What is Onyekachi Oyiriaru's specialty?

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

Is Onyekachi Oyiriaru enrolled in Medicare?

Yes. Onyekachi Oyiriaru 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 Onyekachi Oyiriaru's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Onyekachi Oyiriaru reassigns Medicare benefits to 4 organizations: Central Behavioral Health (Norristown, PA), Intercommunity Action, Inc (Phila, PA), Prospect Health Access Network, Inc. (Drexel Hill, PA) and Legacy Treatment Services Inc (Hainesport, NJ). 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 Onyekachi Oyiriaru's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Onyekachi Oyiriaru was last updated on January 8, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.