MRS. DIANE MCMAHON LPC, RN
NPI 1609179977
Counselor - Professional in Lawrenceville, NJ
About Mrs. Diane Mcmahon Lpc, Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. DIANE MCMAHON LPC, RN (NPI 1609179977) is an individual professional provider in Lawrenceville, New Jersey, licensed in New Jersey (37PC00374900) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Mrs. Diane Mcmahon Lpc, Rn 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 Diane Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lawrenceville, NJ 08648
- Reassigned Medicare billing, New Jersey enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAWRENCEVILLE, NJ 08648
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 Diane Mcmahon's NPI number?
The NPI number for Diane Mcmahon is 1609179977. It was assigned to this individual provider in the NPPES registry on December 8, 2010.
Where is Diane Mcmahon located?
Diane Mcmahon practices at 133 Franklin Corner Rd 2nd Floor Psychotherapy Suite, Lawrenceville, NJ 08648. The listed phone number is (609) 937-5881.
What is Diane Mcmahon's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.
Is Diane Mcmahon enrolled in Medicare?
Yes. Diane Mcmahon 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 Diane Mcmahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diane Mcmahon reassigns Medicare benefits to Healing With Heart And Horses Therapy Practice LLC (Lawrenceville, NJ). 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 Diane Mcmahon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diane Mcmahon accept?
Health plans from Oscar Health list Diane Mcmahon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Diane Mcmahon was last updated on June 2, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mrs. Diane Mcmahon, LPC, RN · NPI 1609179977
Professional provider in Lawrenceville, New Jersey. Individual provider, active in the CMS NPPES registry since December 8, 2010.
## Identity
- **NPI:** 1609179977 (Entity type: Individual)
- **Enumerated:** December 8, 2010
- **Primary specialty:** Counselor - Professional · taxonomy 101YP2500X
- **State license:** 37PC00374900 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 133 FRANKLIN CORNER RD, 2ND FLOOR PSYCHOTHERAPY SUITE, Lawrenceville, NJ 08648-2531
- **Phone:** (609) 937-5881
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Healing With Heart And Horses Therapy Practice LLC (NPI 1780083451, Lawrenceville, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** June 2, 2020
- **Other identifiers:** Medicaid 08779818 (NJ)
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Source: [NPI Profile](https://npiprofile.com/npi/1609179977) · Data from the CMS NPPES public registry.