MRS. CATHY H LAY MD
NPI 1508952037
Family Medicine in Helena, MT
About Mrs. Cathy H Lay Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CATHY H LAY MD (NPI 1508952037) is an individual family medicine provider in Helena, Montana, licensed in Montana (12761) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS, is affiliated with St Peters Health, and is a graduate of Medical University Of South Carolina College Of Medicine (2004).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 5
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mrs. Cathy H Lay Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Cathy Lay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Helena, MT 59602
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: St Peters Health
- Also billed through NPI 1033354683 (Montana)
- 304 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Peters Health
Acute Care Hospitals · Helena, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59602 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Cathy Lay's NPI number?
The NPI number for Cathy Lay is 1508952037. It was assigned to this individual provider in the NPPES registry on October 4, 2006. The provider is also known as Mrs. Cathy R Hurray MD.
Where is Cathy Lay located?
Cathy Lay practices at 3330 Ptarmigan Ln, Helena, MT 59602. The listed phone number is (406) 457-4180.
What is Cathy Lay's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Cathy Lay enrolled in Medicare?
Yes. Cathy Lay is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Cathy Lay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cathy Lay reassigns Medicare benefits to St Peter's Medical Group North (Helena, MT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Cathy Lay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cathy Lay accept?
Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans and Providence Health Plan list Cathy Lay as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Cathy Lay affiliated with any hospitals?
According to CMS data, Cathy Lay is affiliated with St Peters Health.
When was this NPI record last updated?
The NPPES record for Cathy Lay was last updated on October 5, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.
# Mrs. Cathy H Lay, MD · NPI 1508952037
Family Medicine physician in Helena, Montana. Individual provider, active in the CMS NPPES registry since October 4, 2006.
## Identity
- **NPI:** 1508952037 (Entity type: Individual)
- **Enumerated:** October 4, 2006
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 12761 (Montana)
- **Sole proprietor:** No
## Practice location
- **Address:** 3330 PTARMIGAN LN, Helena, MT 59602-0521
- **Phone:** (406) 457-4180 · **Fax:** (406) 495-7935
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** St Peter's Medical Group North (NPI 1477844744, Helena, MT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical University Of South Carolina College Of Medicine, class of 2004
## Record status
- **NPPES last updated:** October 5, 2011
- **Other identifiers:** Medicaid 267384 (SC); Medicare UPIN I63858; Medicare PIN 4542; and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1508952037) · Data from the CMS NPPES public registry.