NPPES file of Aug 9, 2026

Patrick Duffy, PSY.D.

Clinical Psychologist · Charleston, SC

Patrick Duffy, PSY.D. is a clinical psychologist with a practice address in Charleston, South Carolina, and NPI 1417203696, issued on Jul 25, 2012. Check the license (South Carolina 1105, as entered in NPPES) with the South Carolina 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
1417203696
Name
Patrick Duffy
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
1105 SC
Self-reported in NPPES; status is on the state search
Practice location
171 Ashley Ave, Charleston, SC 29425
Phone
(843) 792-1414
Enumerated
Jul 25, 2012
Record last updated
Mar 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20210408001951); 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.
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8 nearest clinical psychologist records → All 446 in South Carolina → Look up another NPI →

Also registered at 171 Ashley Ave

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

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  2. Miguel Abboud, MDPediatric Hematology & Oncology Physician1619292851
  3. Ahmed Abdelkader, MD, PHDNephrology Physician1629743000
  4. Mohamed Abdelwahab, MDOtolaryngology Physician1528679768
  5. Anne Abel, MDChild Abuse Pediatrics Physician1043328990
  6. Christina Abrams, M.D.Pediatric Hematology & Oncology Physician1376920207

Verify Patrick Duffy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich South Carolina board licenses this profession
    Search for license 1105    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 South Carolina 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. University Medical Associates OF The Medical University OF South CarolCharleston, SC

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

Patrick Duffy among 446 clinical psychologist records in South Carolina

Patrick Duffy, PSY.D. is one of 446 clinical psychologist records with a practice address in South Carolina. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 56% of them.

  • NPI issued2012 · 56% of these records are older, 41% newer
  • In a Medicare fileYes · 12% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated2000 · median 2006 among the 88 with a school on file
  • Record last updated2021 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Psychologist providers in South Carolina

There are 446 clinical psychologist records in South Carolina.

All 446 in South Carolina → Every provider in Charleston → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Sudie Back, PHDCharleston, SC 294251164478723
  2. Wendy Balliet, PHDCharleston, SC 294251144500471
  3. Cindy Carter, PHDCharleston, SC 294251396769451
  4. Lillian Christon Arnold, PHDCharleston, SC 294251801120928
  5. Alice Libet, PHDCharleston, SC 294251790728095
  6. Jenna McCauley, PH.D.Charleston, SC 294251356624597
  7. Melissa Milanak, PH.D.Charleston, SC 294251669872065
  8. Elizabeth Santa Ana, PH.D.Charleston, SC 294251154461291

Common questions

What is Patrick Duffy, PSY.D.'s NPI number?

Patrick Duffy, PSY.D.'s National Provider Identifier (NPI) is 1417203696, issued on Jul 25, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Patrick Duffy, PSY.D. located?

The NPPES record lists a practice address at 171 Ashley Ave, Charleston, SC, 29425. Phone: (843) 792-1414. Providers update this record themselves, so call before visiting.

How can I verify Patrick Duffy, PSY.D.'s license?

NPPES lists South Carolina license number 1105, as entered by the provider. Search the South Carolina 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.