MARY LONDON FNP
NPI 1699245498
Nurse Practitioner - Family in Philadelphia, PA
About Mary London Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY LONDON FNP (NPI 1699245498) is an individual family provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (SP019604) and active in the NPI registry since December 2018. She is enrolled in Medicare PECOS, is affiliated with Thomas Jefferson University Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses 2
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 London Fnp 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 Mary London reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19145
- Reassigned Medicare billing, Pennsylvania enrollment
- 600 clinicians in this Medicare group
Philadelphia, PA 19107
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,739 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Thomas Jefferson University Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19145 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
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 London's NPI number?
The NPI number for Mary London is 1699245498. It was assigned to this individual provider in the NPPES registry on December 5, 2018.
Where is Mary London located?
Mary London practices at 2534 S 18th St, Philadelphia, PA 19145. The listed phone number is (215) 463-4363.
What is Mary London's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary London enrolled in Medicare?
Yes. Mary London 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 London's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary London reassigns Medicare benefits to 2 organizations: Methodist Associates In Healthcare, Inc (Philadelphia, PA) and Jefferson University Physicians (Philadelphia, 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 Mary London's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary London accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Mary London 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 London affiliated with any hospitals?
According to CMS data, Mary London is affiliated with Thomas Jefferson University Hospital.
When was this NPI record last updated?
The NPPES record for Mary London was last updated on December 5, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 London, FNP · NPI 1699245498
Family physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since December 5, 2018.
## Identity
- **NPI:** 1699245498 (Entity type: Individual)
- **Enumerated:** December 5, 2018
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** SP019604 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 2534 S 18TH ST, Philadelphia, PA 19145-3701
- **Phone:** (215) 463-4363
## 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): Methodist Associates In Healthcare, Inc (NPI 1871534826, Philadelphia, PA); Jefferson University Physicians (NPI 1326093675, Philadelphia, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 5, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1699245498) · Data from the CMS NPPES public registry.