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

Cassandra Williams, MD

Individual provider Internal Medicine Physician · NPI 1558546820

Cassandra Williams, MD is an Internal Medicine in Amherst, New York. Qualified in 2005, 21 years ago. Practices with Maine Medical Consultants PC, a 46-clinician group and accepts Medicare assignment. Licensed in North Carolina and New York.

Years since qualifying
21
Licensed in
NC, NY
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

3980A Sheridan Dr Ste 200
Amherst, NY 14226-1741
Phone: (716) 309-4772
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 302772 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 200800022 (NC)

Record details

NPI number1558546820
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 7, 2008
Last updated in NPPESOctober 30, 2020
Certification dateOctober 30, 2020
Mailing addressPo Box 488, Buffalo, NY 14240-0488

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Maine Medical Consultants Pc — 46 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Amherst