NPPES file of Aug 9, 2026

Maria O Halloran, PHD

Psychologist · Darby, PA

Maria O Halloran, PHD is a psychologist with a practice address in Darby, Pennsylvania, and NPI 1477849230, issued on Jun 21, 2011. Check the license (Pennsylvania PS016726, as entered in NPPES) with the Pennsylvania board that licenses this profession; 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
1477849230
Name
Maria O Halloran
Credential
PHD
Primary taxonomy
Psychologist 103T00000X
License number
PS016726 PA
Self-reported in NPPES; status is on the state search
Practice location
1503 Lansdowne Ave, Darby, PA 19023
Phone
(610) 237-5676
Enumerated
Jun 21, 2011
Record last updated
Mar 13, 2013 (not updated in 13 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110914000694); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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.
Download card Updates feed

8 nearest psychologist records → All 2,687 in Pennsylvania → Look up another NPI →

Also registered at 1503 Lansdowne Ave

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

  1. Bharti Asnani, M.D.Infectious Disease Physician1164600417
  2. John Blannett, MDCardiovascular Disease Physician1780689794
  3. Bret Boyer, PHDPsychologist1013059831
  4. Francis Brahmakulam, M.D.Pulmonary Disease Physician1952563165
  5. Maureen Brolly, PT, ATCPhysical Therapist1700089612
  6. Neil Cohn, M.D.Psychiatry Physician1699784777

Verify Maria O Halloran in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license PS016726    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
Find the Pennsylvania 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Evergreen Counseling And Psychological Associates LLCPhiladelphia, PA

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

Maria O Halloran among 2,687 psychologist records in Pennsylvania

Maria O Halloran, PHD is one of 2,687 psychologist records with a practice address in Pennsylvania. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 61% of them.

  • NPI issued2011 · 61% of these records are older, 36% newer
  • In a Medicare fileYes · 13% of these records are
  • In the CMS Doctors and Clinicians fileYes · 22% of these records are
  • Graduated2007 · median 2004 among the 585 with a school on file
  • Record last updated2013 · 70% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

4 psychologist records list a practice address in Darby

They are 4 of the 465 NPPES records with a practice address in Darby, and 2,687 psychologist records in Pennsylvania.

All 2,687 in Pennsylvania → Every provider in Darby → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Bret Boyer, PHDDarby, PA 190231013059831
  2. Erica Henninger, PSY.D.Darby, PA 190231912231937
  3. Sonia Voynow, LCSWDarby, PA 190231184765174
  4. Amy Cades, PH DDresher, PA 190251548209497
  5. Samantha Dixon, PSYD, MBADresher, PA 190251376184523
  6. Linda Schmitz, MADresher, PA 190251306890413
  7. Davida Vogel, PSYDDresher, PA 190251093504227
  8. Bryan Blum, MS, PSYDBensalem, PA 190201669230710

Common questions

What is Maria O Halloran, PHD's NPI number?

Maria O Halloran, PHD's National Provider Identifier (NPI) is 1477849230, issued on Jun 21, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Maria O Halloran, PHD located?

The NPPES record lists a practice address at 1503 Lansdowne Ave, Darby, PA, 19023. Phone: (610) 237-5676. Providers update this record themselves, so call before visiting.

How can I verify Maria O Halloran, PHD's license?

NPPES lists Pennsylvania license number PS016726, as entered by the provider. Search the Pennsylvania 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. 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.