Shallary Simmons Duncan, PH.D.
Clinical Psychologist · Williamsport, PA
Shallary Simmons Duncan, PH.D. is a clinical psychologist with a practice address in Williamsport, Pennsylvania, and NPI 1003125428, issued on Oct 4, 2010. Check the license (Pennsylvania PC001004, as entered in NPPES) with the Pennsylvania board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Shallary Simmons Duncan
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PC001004 PA
Self-reported in NPPES; status is on the state search - Practice location
- 721 Rose St, Williamsport, PA 17701
- Phone
- (570) 971-7729
- Enumerated
- Oct 4, 2010
- Record last updated
- Oct 4, 2010 (not updated in 16 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 2,597 in Pennsylvania → Look up another NPI →
Verify Shallary Simmons Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license PC001004Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Shallary Simmons Duncan among 2,597 clinical psychologist records in Pennsylvania
Shallary Simmons Duncan, PH.D. is one of 2,597 clinical psychologist records with a practice address in Pennsylvania. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2010, is newer than 54% of them.
- NPI issued2010 · 54% of these records are older, 42% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2010 · 65% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Psychologist providers in Pennsylvania
There are 2,597 clinical psychologist records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,597 in Pennsylvania → Every provider in Williamsport → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Dixie KimeWilliamsport, PA 177011376848259
- Scott Mathias, PSY.D.Williamsport, PA 177011629286034
- Brian Schurr, PSY.D.Williamsport, PA 177011992029458
- Christie Seiler, PSY.D.Williamsport, PA 177011376521294
- Kathy Zakarian, PSY.D.Williamsport, PA 177011053481358
- Lynn Bruner, PH.DLock Haven, PA 177451437142015
- Luci Dumas Espinoza, PHDMontoursville, PA 177541902576804
- Jennifer Enigk, PSYDMontoursville, PA 177541710612221
Common questions
What is Shallary Simmons Duncan, PH.D.'s NPI number?
Shallary Simmons Duncan, PH.D.'s National Provider Identifier (NPI) is 1003125428, issued on Oct 4, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Shallary Simmons Duncan, PH.D. located?
The NPPES record lists a practice address at 721 Rose St, Williamsport, PA, 17701. Phone: (570) 971-7729. Providers update this record themselves, so call before visiting.
How can I verify Shallary Simmons Duncan, PH.D.'s license?
NPPES lists Pennsylvania license number PC001004, 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. 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.