MARY ALICE DECOURSEY CNM
NPI 1952439507
Advanced Practice Midwife in Williamsport, PA
About Mary Alice Decoursey Cnm NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ALICE DECOURSEY CNM (NPI 1952439507) is an individual advanced practice midwife in Williamsport, Pennsylvania, licensed in Pennsylvania (MW010631) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Alice Decoursey Cnm is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Alice Decoursey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Williamsport, PA 17701
- Reassigned Medicare billing, Pennsylvania enrollment
- 31 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17701 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Alice Decoursey's NPI number?
The NPI number for Mary Alice Decoursey is 1952439507. It was assigned to this individual provider in the NPPES registry on March 2, 2007.
Where is Mary Alice Decoursey located?
Mary Alice Decoursey practices at 740 High St Ste 1004, Williamsport, PA 17701. The listed phone number is (570) 321-3300.
What is Mary Alice Decoursey's specialty?
The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.
Is Mary Alice Decoursey enrolled in Medicare?
Yes. Mary Alice Decoursey is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Alice Decoursey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Alice Decoursey reassigns Medicare benefits to Susquehanna Physician Services (Williamsport, PA). 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 Mary Alice Decoursey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Alice Decoursey was last updated on June 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Mary Alice Decoursey, CNM · NPI 1952439507
Advanced Practice Midwife physician in Williamsport, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 2, 2007.
## Identity
- **NPI:** 1952439507 (Entity type: Individual)
- **Enumerated:** March 2, 2007
- **Primary specialty:** Advanced Practice Midwife · taxonomy 367A00000X
- **State license:** MW010631 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 740 HIGH ST STE 1004, Williamsport, PA 17701-3102
- **Phone:** (570) 321-3300 · **Fax:** (570) 321-3301
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Susquehanna Physician Services (NPI 1770719882, Williamsport, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1952439507) · Data from the CMS NPPES public registry.