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

John Marcus Lay, DO

Individual provider Family Medicine Physician · NPI 1659406825

John Marcus Lay, DO practises Osteopathic Manipulative Medicine in Aptos, California. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1977, 49 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
49
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
CA
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.

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Practice location Address checks out

10098 Soquel Dr
Aptos, CA 95003-4926 Not confirmed with CMS for 14 years — call before visiting
Phone: (831) 688-3112
Fax: (831) 685-2614
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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 020A41460 (CA)

Record details

NPI number1659406825
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedFebruary 21, 2007
Last updated in NPPESFebruary 23, 2012

Medicare enrollment

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

Medicare specialtyOSTEOPATHIC MANIPULATIVE MEDICINE
Also practisesGENERAL PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1977 (49 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients182
Services billed 6,178 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Other providers in Aptos