CHARLES J. SONDAY CRNP
NPI 1851380422
Nurse Practitioner - Acute Care in Allentown, PA
About Charles J. Sonday Crnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLES J. SONDAY CRNP (NPI 1851380422) is an individual acute care provider in Allentown, Pennsylvania, licensed in Pennsylvania (SP008737) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Charles J. Sonday Crnp 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 Reassignments
2Medicare enrollment records show Charles Sonday reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Allentown, PA 18104
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: St Lukes Physician Group Inc
- 2,851 clinicians in this Medicare group
Orwigsburg, PA 17961
- Reassigned Medicare billing, Pennsylvania enrollment
- 953 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 18104 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.
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 Charles Sonday's NPI number?
The NPI number for Charles Sonday is 1851380422. It was assigned to this individual provider in the NPPES registry on October 17, 2005.
Where is Charles Sonday located?
Charles Sonday practices at 1736 Hamilton Blvd Rapid Response Department St. Lukes Allentown, Allentown, PA 18104. The listed phone number is (610) 770-8306.
What is Charles Sonday's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Charles Sonday enrolled in Medicare?
Yes. Charles Sonday 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 organizations bill Medicare for Charles Sonday's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Sonday reassigns Medicare benefits to 2 organizations: St. Luke's Physician Group, Inc. (Allentown, PA) and Gslpg, Inc (Orwigsburg, PA). Each 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 Charles Sonday'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 Charles Sonday was last updated on July 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Charles J. Sonday, CRNP · NPI 1851380422
Acute Care physician in Allentown, Pennsylvania. Individual provider, active in the CMS NPPES registry since October 17, 2005.
## Identity
- **NPI:** 1851380422 (Entity type: Individual)
- **Enumerated:** October 17, 2005
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** SP008737 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1736 HAMILTON BLVD, RAPID RESPONSE DEPARTMENT ST. LUKES ALLENTOWN, Allentown, PA 18104
- **Phone:** (610) 770-8306 · **Fax:** (610) 770-8603
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): St. Luke's Physician Group, Inc. (NPI 1316182942, Allentown, PA); Gslpg, Inc (NPI 1366006702, Orwigsburg, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** July 29, 2008
- **Other identifiers:** Medicare ID-Type Unspecified 094444EU8 (PA); Medicare UPIN Q51778 (PA); Other 1768524 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1851380422) · Data from the CMS NPPES public registry.