Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mary Ellen Williams, DO

Individual provider Family Medicine Physician · NPI 1093855793

Mary Ellen Williams, DO is registered under Family Practice in Whitehall, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 1993, 33 years ago. Practices with Lehigh Valley Physician Group, a 2,493-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.

Years since qualifying
33
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

3691 Crescent Ct E Ste 201
Whitehall, PA 18052-3433
Phone: (610) 434-9561
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1003 Chestnut St, Emmaus, PA 18049-1902 — (610) 625-2010

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence OS008484L (PA)

Record details

NPI number1093855793
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 8, 2007
Last updated in NPPESJuly 19, 2023
Certification dateJuly 19, 2023

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesOSTEOPATHIC MANIPULATIVE MEDICINE
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1993 (33 years in practice)
Group practice Lehigh Valley Physician Group — 2493 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients235
Services billed 571 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Lehigh Valley Hospital Hospital · Allentown, PA
  • 1st Care Home Health Services Of Pennsylvania Home health agency · Allentown, PA

Colleagues at Lehigh Valley Physician Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2493 clinicians in the practice; 12 are shown here.

Other providers in Whitehall