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

Dr. John Grassam, DC

Individual provider Chiropractor · NPI 1821293440

Dr. John Grassam, DC is registered under Chiropractic in Port St Lucie, Florida. Graduated from Life Chiropractic College in 1998, 28 years ago. Accepts Medicare assignment. Licensed in Florida.

Years since qualifying
28
Trained at
Life Chiropractic College
Licensed in
FL
In the registry since
2007
What do these letters mean?
DC — Doctor of Chiropractic
A licensed chiropractor.

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Practice location Address checks out

555 NW Lake Whitney Pl Ste 105
Port St Lucie, FL 34986-1623
Phone: (772) 237-2080
Fax: (772) 237-2086
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence CH7964 (FL)

Record details

NPI number1821293440
Entity typeIndividual (Type 1)
GenderMale
Credentials DC
Sole proprietorNo
NPI enumeratedJune 15, 2007
Last updated in NPPESDecember 1, 2022
Certification dateDecember 1, 2022

Medicare enrollment

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

Medicare specialtyCHIROPRACTIC
Medical schoolLIFE CHIROPRACTIC COLLEGE
Graduated 1998 (28 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 patients13
Services billed 94 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

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