MONIKA MAHAJAN
NPI 1255354866
Internal Medicine in Allentown, PA
About Monika Mahajan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MONIKA MAHAJAN (NPI 1255354866) is an individual internal medicine provider in Allentown, Pennsylvania, licensed in Pennsylvania (MD420619) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with St Luke's Hospital Bethlehem, and is a graduate of Other (1993).
NPPES Registry Identity
Specialties & Licenses
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
Monika Mahajan 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 Monika Mahajan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Allentown, PA 18103
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,895 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 13
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Luke's Hospital Bethlehem
Acute Care Hospitals · Bethlehem, PALehigh Valley Hospital
Acute Care Hospitals · Allentown, PASt Luke's Miners Memorial Hospital
Acute Care Hospitals · Coaldale, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 18103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 10
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
ALLENTOWN, PA 18103
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 Monika Mahajan's NPI number?
The NPI number for Monika Mahajan is 1255354866. It was assigned to this individual provider in the NPPES registry on July 25, 2006.
Where is Monika Mahajan located?
Monika Mahajan practices at 1230 S Cedar Crest Blvd Suite 201, Allentown, PA 18103. The listed phone number is (610) 402-8950.
What is Monika Mahajan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Monika Mahajan enrolled in Medicare?
Yes. Monika Mahajan 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 Monika Mahajan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Monika Mahajan reassigns Medicare benefits to Lehigh Valley Physician Group (Allentown, 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 Monika Mahajan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Monika Mahajan accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Monika Mahajan 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.
Is Monika Mahajan affiliated with any hospitals?
According to CMS data, Monika Mahajan is affiliated with St Luke's Hospital Bethlehem, Lehigh Valley Hospital and St Luke's Miners Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Monika Mahajan was last updated on November 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Monika Mahajan · NPI 1255354866
Internal Medicine physician in Allentown, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 25, 2006.
## Identity
- **NPI:** 1255354866 (Entity type: Individual)
- **Enumerated:** July 25, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD420619 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1230 S CEDAR CREST BLVD, SUITE 201, Allentown, PA 18103-6367
- **Phone:** (610) 402-8950
## 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:** Lehigh Valley Physician Group (NPI 1376615468, Allentown, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** November 19, 2015
---
Source: [NPI Profile](https://npiprofile.com/npi/1255354866) · Data from the CMS NPPES public registry.