Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Margaret Mary Duffy, MD

Individual provider Nephrology Physician · NPI 1518233881

Margaret Mary Duffy, MD is a Nephrology in Allentown, Pennsylvania. Graduated from Rutgers New Jersey Medical School in 2012, 14 years ago. Practices with Valley Kidney Specialists, PC, a 31-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.

Years since qualifying
14
Trained at
Rutgers New Jersey Medical School
Licensed in
PA
In the registry since
2012
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1230 S Cedar Crest Blvd Stes 301 302 304
Allentown, PA 18103-6212
Phone: (610) 432-4529
Fax: (610) 432-2206
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence MD461963 (PA)

Record details

NPI number1518233881
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2012
Last updated in NPPESJuly 21, 2022
Certification dateMay 31, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 2012 (14 years in practice)
Group practice Valley Kidney Specialists, P.C. — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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