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

Mrs. Cathy H Lay, MD

Individual provider Family Medicine Physician · NPI 1508952037

Mrs. Cathy H Lay, MD is a Family Practice in Helena, Montana. Graduated from Medical University of South Carolina College of Medicine in 2004, 22 years ago. Practices with St Peters Health, a 206-clinician group and accepts Medicare assignment. Licensed in Montana and South Carolina.

Years since qualifying
22
Trained at
Medical University of South Carolina College of Medicine
Licensed in
MT, SC
In the registry since
2006
Specialties on file
2
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

3330 Ptarmigan Ln
Helena, MT 59602-0521
Phone: (406) 457-4180
Fax: (406) 495-7935
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 12761 (MT)
Family Medicine Physician Taxonomy 207Q00000X · Licence 26738 (SC)

Record details

NPI number1508952037
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 4, 2006
Last updated in NPPESOctober 5, 2011

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice St Peters Health — 206 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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