DR. DENISE DIXON PH.D.
NPI 1457394983
Psychologist - Clinical in Port Jefferson, NY
About Dr. Denise Dixon Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DENISE DIXON PH.D. (NPI 1457394983) is an individual clinical provider in Port Jefferson, New York, licensed in New York (015481) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with St Charles Hospital, and is a graduate of Other (1997).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Denise Dixon Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Denise Dixon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Port Jefferson, NY 11777
- Reassigned Medicare billing, New York enrollment
- 210 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Charles Hospital
Acute Care Hospitals · Port Jefferson, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11777 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 19
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORT JEFFERSON, NY 11777
PORT JEFFERSON, NY 11777
PORT JEFFERSON, NY 11777
PORT JEFFERSON, NY 11777
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Denise Dixon's NPI number?
The NPI number for Denise Dixon is 1457394983. It was assigned to this individual provider in the NPPES registry on June 13, 2006.
Where is Denise Dixon located?
Denise Dixon practices at 646 Main St 2nd Floor, Suite 203, Port Jefferson, NY 11777. The listed phone number is (631) 456-9426.
What is Denise Dixon's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Denise Dixon enrolled in Medicare?
Yes. Denise Dixon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Denise Dixon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Denise Dixon reassigns Medicare benefits to St. Charles Hospital Corp. (Port Jefferson, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Denise Dixon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Denise Dixon affiliated with any hospitals?
According to CMS data, Denise Dixon is affiliated with St Charles Hospital.
When was this NPI record last updated?
The NPPES record for Denise Dixon was last updated on October 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Denise Dixon, PH.D. · NPI 1457394983
Clinical provider in Port Jefferson, New York. Individual provider, active in the CMS NPPES registry since June 13, 2006.
## Identity
- **NPI:** 1457394983 (Entity type: Individual)
- **Enumerated:** June 13, 2006
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 015481 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 646 MAIN ST, 2ND FLOOR, SUITE 203, Port Jefferson, NY 11777-2235
- **Phone:** (631) 456-9426
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** St. Charles Hospital Corp. (NPI 1497765630, Port Jefferson, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1997
## Record status
- **NPPES last updated:** October 27, 2011
- **Other identifiers:** Other VN2811 (NY); Medicaid 02794076 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1457394983) · Data from the CMS NPPES public registry.