Cathy H. Lay, MD
Family Medicine Physician · Helena, MT
Cathy H. Lay, MD is a family medicine physician with a practice address in Helena, Montana, and NPI 1508952037, issued on Oct 4, 2006. Check the license (Montana 12761, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Cathy H. Lay
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 12761 MT
26738 SC
Self-reported in NPPES; status is on the state search - Practice location
- 3330 Ptarmigan LN, Helena, MT 59602
- Phone
- (406) 457-4180
- Enumerated
- Oct 4, 2006
- Record last updated
- Oct 5, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (406) 495-7935
- Medicaid ID
- 267384 SC
- Medicare enrollment
- Enrolled (PECOS I20110927000756); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 3330 Ptarmigan LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Abraham, NP-CNurse Practitioner1902027436
- Alison AmyFamily Nurse Practitioner1083231005
- William Batey, M.D.Family Medicine Physician1477656288
- Laura Bennett, P.A.Medical Physician Assistant1023010717
- Ashley Berkram, PACPhysician Assistant1891983458
- John Bohler, M.D.Gastroenterology Physician1871543280
Verify Cathy H. Lay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 12761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
520 Medicare Part D claims for 361 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Cephalexin62 claims
- Amoxicillin-Clavulanate Potass43 claims
- Azithromycin34 claims
- Prednisone30 claims
- Albuterol Sulfate Hfa27 claims
- Doxycycline Hyclate26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- St Peters HealthHelena, MT · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Cathy H. Lay among 775 family medicine physician records in Montana
Cathy H. Lay, MD is one of 775 family medicine physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 50% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2004 · median 2007 among the 464 with a school on file
- Record last updated2011 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Helena
They are 48 of the 1,591 NPPES records with a practice address in Helena, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Helena → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Batey, M.D.Helena, MT 596021477656288
- Earl Book, M.D.Helena, MT 596021265433700
- Mark Buck, M.D.Helena, MT 596021801887815
- James Crichton, MDHelena, MT 596021700887692
- Emily Hedum, DOHelena, MT 596021144665795
- Kiley Kirksey, M.D.Helena, MT 596021083875629
- David Krainacker, MDHelena, MT 596021316948037
- Nathan Levanger, DOHelena, MT 596021356425946
Common questions
What is Cathy H. Lay, MD's NPI number?
Cathy H. Lay, MD's National Provider Identifier (NPI) is 1508952037, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cathy H. Lay, MD located?
The NPPES record lists a practice address at 3330 Ptarmigan LN, Helena, MT, 59602. Phone: (406) 457-4180. Providers update this record themselves, so call before visiting.
How can I verify Cathy H. Lay, MD's license?
NPPES lists Montana license number 12761, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cathy H. Lay, MD prescribe under Medicare Part D?
In 2024, Cathy H. Lay, MD had 520 Medicare Part D claims for 361 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Cathy H. Lay, MD's MIPS final score?
The 2023 MIPS final score is 81.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.