Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

AILEEN LO CRNP
NPI 1073456992
Nurse Practitioner in Philadelphia, PA

Q: What is Aileen Lo's NPI number?

The NPI number for Aileen Lo is 1073456992. It was assigned to this individual provider in the NPPES registry on April 14, 2026.

Q: What is Aileen Lo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Aileen Lo was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.

Active since April 14, 2026

3737 MARKET ST, 4TH FLOOR, PHILADELPHIA, PA 19104(215) 662-8699(215) 243-4649 Get Directions Write a Review

NPPES record last updated: September 3, 2026. Verified against the NPPES registry weekly; last sync: September 20, 2026.

Record update history: Sep 3, 2026, Apr 14, 2026 (2 updates tracked since 2026).

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About Aileen Lo Crnp NPPES

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

AILEEN LO CRNP (NPI 1073456992) is an individual nurse practitioner in Philadelphia, Pennsylvania, licensed in Pennsylvania (SP033978) and active in the NPI registry since April 2026.

NPPES Registry Identity

NPI1073456992

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameAILEEN LOCredential: CRNP

Location Address3737 MARKET ST, 4TH FLOORPhiladelphia, PA 19104-5544

Mailing Address3737 Market St, 4th FloorPhiladelphia, PA 19104-5544 · (215) 662-8699 · Fax (215) 243-4649

Phone(215) 662-8699

Fax(215) 243-4649

Sole ProprietorNo

Enumeration DateApril 14, 2026

Last NPPES UpdateSeptember 3, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 3, 2026

✔ NPI 1073456992 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in PA · SP033978

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

3737 MARKET ST, Philadelphia, PA 19104

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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.

SAMIR MEHTA MD

Orthopaedic Surgery

3737 MARKET ST, 7 FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

GINA MARIA MCGARVEY PA-C

Physician Assistant

3737 MARKET ST
PHILADELPHIA, PA 19104

Philadelphia County (267) 575-3110

MICHAEL MALONEY

Family Medicine

3737 MARKET ST, 9TH FL
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8777

DR. JEREMY B KATZEN M.D.

Internal Medicine (Pulmonary Disease)

3737 MARKET ST, 10TH FL
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3202

CRAIG D KATZ PA-C

Physician Assistant

3737 MARKET ST, 7TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

PRISCILLA ESADAH MD

Family Medicine

3737 MARKET ST, 9TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8777

LAUREN ANNE SMITH CRNP

Nurse Practitioner (Family)

3737 MARKET ST, 7TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

ALYSSA KATHLEEN BRUEHLMAN M.D.

Family Medicine (Addiction Medicine)

3737 MARKET ST, 9TH FL
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8777

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 Aileen Lo's NPI number?

The NPI number for Aileen Lo is 1073456992. It was assigned to this individual provider in the NPPES registry on April 14, 2026.

Where is Aileen Lo located?

Aileen Lo practices at 3737 Market St 4th Floor, Philadelphia, PA 19104. The listed phone number is (215) 662-8699.

What is Aileen Lo's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

When was this NPI record last updated?

The NPPES record for Aileen Lo was last updated on September 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.