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MARY ANNE A PAJEL-SIO MD PC
NPI 1235259995
Family Medicine in Bethlehem, PA

Active since March 29, 2007
2551 BAGLYOS CIR, SUITE A-10, BETHLEHEM, PA 18020(610) 866-4201 Get Directions Write a Review

NPPES record last updated: January 27, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mary Anne A Pajel-sio Md Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY ANNE A PAJEL-SIO MD PC (NPI 1235259995), doing business as Willow Park Medical Group, is a healthcare organization registered as a family medicine in Bethlehem, Pennsylvania and active in the NPI registry since March 2007. The organization lists Terri Wykosky, Office Manager, as its authorized official.

NPPES Registry Identity

NPI1235259995
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameMARY ANNE A PAJEL-SIO MD PC
Location Address2551 BAGLYOS CIR, SUITE A-10Bethlehem, PA 18020-8042
Mailing Address2551 Baglyos Circle, Suite A10Bethlehem, PA 18020-8056 · (610) 866-4201
Phone(610) 866-4201
Organization SubpartNo
Authorized OfficialTerri WykoskyOffice Manager · (610) 866-4201
Enumeration DateMarch 29, 2007
Last NPPES UpdateJanuary 27, 2020
✔ NPI 1235259995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
2551 BAGLYOS CIR, Bethlehem, PA 18020
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Other Names 2

Other NameMary Anne A Pajel-sio Md Pc
Doing Business AsWillow Park Medical Group

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Anne A Pajel-sio Md Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Mary Anne A Pajel-Sio MD PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Mary Anne Pajel-Sio, M.D.
Family Practice
NPI 1952379315
2551 BAGLYOS CIRCLE A-10
Bethlehem, PA 18020
(610) 866-4201
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Anne A Pajel-Sio MD PC's NPI number?

The NPI number for Mary Anne A Pajel-Sio MD PC is 1235259995. It was assigned to this organization in the NPPES registry on March 29, 2007. The provider is doing business as Willow Park Medical Group.

Where is Mary Anne A Pajel-Sio MD PC located?

Mary Anne A Pajel-Sio MD PC is located at 2551 Baglyos Cir Suite A-10, Bethlehem, PA 18020. The listed phone number is (610) 866-4201.

What is Mary Anne A Pajel-Sio MD PC's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Mary Anne A Pajel-Sio MD PC enrolled in Medicare?

Yes. Mary Anne A Pajel-Sio MD PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mary Anne A Pajel-Sio MD PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Mary Anne A Pajel-Sio MD PC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Mary Anne A Pajel-Sio MD PC was last updated on January 27, 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.