Doctor profile · Federal record

Dr. Sandra Duemmler, PH.D.

Clinical Psychologist · Clinical Psychologist · West Chester, PA

  • NPI 1033241450
  • Accepts Medicare
  • 27 yrs in practice
  • Licensed in 2 states
  • Female
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
1 Ivy Rock RD
West Chester, PA 193828148
(302) 983-7971
Additional location
3411 Silverside RD, Weldin Bldg., Suite 100
Wilmington, DE 198104812

Credentials & registration

NPPES · NUCC
NPI registered
March 2007 — 19 yrs on file
Profile last updated
February 7, 2024
Year of graduation
1999 — 27 yrs since
Specialty taxonomy
103TC0700X — NUCC code
State licenses (2)
Pennsylvania #PS019473 · Delaware #0000600

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033241450. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
422
Distinct HCPCS
1
Medicare allowed
$41,874
HCPCS Description Services Patients Avg allowed
90834 Psychotherapy, 45 minutes 422 18 $99

In context: peer comparison

Among 3 peers in this city , average services per provider: 583. This provider delivers 0.7× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Sandra Duemmler's medical specialty?
Dr. Sandra Duemmler practices Clinical Psychologist in West Chester, PA.
Where does Dr. Sandra Duemmler practice?
Dr. Sandra Duemmler practices at 1 Ivy Rock RD, West Chester, PA 193828148. Office phone: 3029837971.
What is Dr. Sandra Duemmler's NPI?
Dr. Sandra Duemmler's National Provider Identifier (NPI) is 1033241450, issued by NPPES.
Does Dr. Sandra Duemmler accept Medicare assignment?
Yes. Dr. Sandra Duemmler accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sandra Duemmler commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.

Methodology · sources used on this page

All figures on this page come from publicly available federal datasets. We do not edit, score, or summarise the underlying data. Profile generated May 25, 2026.

NPPES Provider identifiers and practice info May 11, 2026
Open Payments Industry payments to providers (Sunshine Act) May 11, 2026
Medicare Procedure Utilization Services and allowed amounts by HCPCS May 11, 2026
Medicare Part D Prescription drug claims May 11, 2026
CMS MIPS Quality performance scores May 11, 2026
OIG LEIE Federal exclusion / sanctions list May 11, 2026

Information based on publicly available federal data. Not medical advice. Report incorrect data ›