Onyekachi Joseph Oyiriaru, MD
Psychiatry Physician · Norristown, PA
Onyekachi Joseph Oyiriaru, MD is a psychiatry physician with a practice address in Norristown, Pennsylvania, and NPI 1093144875, issued on Nov 2, 2013. Check the license (Pennsylvania MD463536, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Onyekachi Joseph Oyiriaru
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD463536 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1201 Dekalb St, Norristown, PA 19401
- Phone
- (610) 277-7600
- Enumerated
- Nov 2, 2013
- Record last updated
- Jan 8, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (610) 275-0216
- Medicare enrollment
- Enrolled (PECOS I20230201000138); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 2,662 in Pennsylvania → Look up another NPI →
Also registered at 1201 Dekalb St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nnedinma AhukannaPsychiatric/Mental Health Nurse Practitioner1174305445
- Sara Benson, LPCProfessional Counselor1073918439
- Paige Boley, LPCProfessional Counselor1356145569
- Joseph Cipko, MA, LPCCounselor1407118656
- Maria Credle, LSWMental Health Counselor1891177903
- Mahmood Dadvand, M.D.Psychiatry Physician1073653457
Verify Onyekachi Joseph Oyiriaru in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD463536Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average psychiatry physician in 2024
1,296 Medicare Part D claims for 114 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Trazodone Hcl137 claims
- Sertraline Hcl89 claims
- Buspirone Hcl87 claims
- Hydroxyzine Pamoate81 claims
- Quetiapine Fumarate80 claims
- Aripiprazole62 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.
Industry payments in 2024: $17.29
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Legacy Treatment Services IncNorthfield, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Onyekachi Joseph Oyiriaru among 2,662 psychiatry physician records in Pennsylvania
Onyekachi Joseph Oyiriaru, MD is one of 2,662 psychiatry physician records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 45% of these records are
- Graduated2002 · median 2003 among the 1,186 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 psychiatry physician records list a practice address in Norristown
They are 35 of the 818 NPPES records with a practice address in Norristown, and 2,662 psychiatry physician records in Pennsylvania.
All 2,662 in Pennsylvania → Every provider in Norristown → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Vatsala Ayyaswamy, M.D.Norristown, PA 194011346389046
- Shahla Behjat, M.D.Norristown, PA 194011588722219
- Joanne Bernabei, MDNorristown, PA 194011366595548
- Mahmood Dadvand, M.D.Norristown, PA 194011073653457
- Zereen Fernandes, MDNorristown, PA 194011962502138
- Stephan Mann, M.D.Norristown, PA 194011881615201
- Nora Margolis, M.D.Norristown, PA 194011629134408
- Yogesh Maru, M.D.Norristown, PA 194011134198138
Common questions
What is Onyekachi Joseph Oyiriaru, MD's NPI number?
Onyekachi Joseph Oyiriaru, MD's National Provider Identifier (NPI) is 1093144875, issued on Nov 2, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Onyekachi Joseph Oyiriaru, MD located?
The NPPES record lists a practice address at 1201 Dekalb St, Norristown, PA, 19401. Phone: (610) 277-7600. Providers update this record themselves, so call before visiting.
How can I verify Onyekachi Joseph Oyiriaru, MD's license?
NPPES lists Pennsylvania license number MD463536, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Onyekachi Joseph Oyiriaru, MD prescribe under Medicare Part D?
In 2024, Onyekachi Joseph Oyiriaru, MD had 1,296 Medicare Part D claims for 114 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.