MARY ANN CHONG LIM MD
NPI 1457573271
Internal Medicine - Nephrology in Philadelphia, PA
About Mary Ann Chong Lim Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ANN CHONG LIM MD (NPI 1457573271) is an individual nephrology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD431081) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with University Medical Center Of Princeton At Plainsboro, and is a graduate of Other (2002).
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
Mary Ann Chong Lim Md 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
3Medicare enrollment records show Mary Ann Lim reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19104
- Reassigned Medicare billing, Pennsylvania enrollment
- 125 clinicians in this Medicare group
Philadelphia, PA 19145
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Clinical Care Associates Of The University Of Pennsylvania Health.
- 983 clinicians in this Medicare group
Cherry Hill, NJ 08034
- Reassigned Medicare billing, New Jersey enrollment
- 793 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 5
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Medical Center Of Princeton At Plainsboro
Acute Care Hospitals · Plainsboro, NJHospital Of Univ Of Pennsylvania
Acute Care Hospitals · Philadelphia, PAChester County Hospital
Acute Care Hospitals · West Chester, PAPenn Presbyterian Medical Center
Acute Care Hospitals · Philadelphia, PAPennsylvania Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19104 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 9
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.
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
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 Ann Lim's NPI number?
The NPI number for Mary Ann Lim is 1457573271. It was assigned to this individual provider in the NPPES registry on May 2, 2007.
Where is Mary Ann Lim located?
Mary Ann Lim practices at 3400 Civic Center Blvd 1 South Pavilion, Philadelphia, PA 19104. The listed phone number is (215) 662-2638.
What is Mary Ann Lim's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Mary Ann Lim enrolled in Medicare?
Yes. Mary Ann Lim 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 Mary Ann Lim's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ann Lim reassigns Medicare benefits to 3 organizations: University Of Penn - Medical Group (Philadelphia, PA), Clinical Care Associates Of The University Of Pennsylvania Health Syst (Philadelphia, PA) and Clinical Health Care Associates Of New Jersey, PC (Cherry Hill, NJ). 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 Mary Ann Lim's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Ann Lim accept?
Health plans from Oscar Health list Mary Ann Lim 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 Mary Ann Lim affiliated with any hospitals?
According to CMS data, Mary Ann Lim is affiliated with University Medical Center Of Princeton At Plainsboro, Hospital Of Univ Of Pennsylvania, Chester County Hospital, Penn Presbyterian Medical Center and Pennsylvania Hospital.
When was this NPI record last updated?
The NPPES record for Mary Ann Lim was last updated on June 30, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 Ann Chong Lim, MD · NPI 1457573271
Nephrology physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since May 2, 2007.
## Identity
- **NPI:** 1457573271 (Entity type: Individual)
- **Enumerated:** May 2, 2007
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** MD431081 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 3400 CIVIC CENTER BLVD, 1 SOUTH PAVILION, Philadelphia, PA 19104-4306
- **Phone:** (215) 662-2638 · **Fax:** (215) 349-5703
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of Penn - Medical Group (NPI 1629181912, Philadelphia, PA); Clinical Care Associates Of The University Of Pennsylvania Health Syst (NPI 1508380452, Philadelphia, PA); Clinical Health Care Associates Of New Jersey, PC (NPI 1134278971, Cherry Hill, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** June 30, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1457573271) · Data from the CMS NPPES public registry.