Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Grant S Keefer, MPAS, PA-C

Individual provider Physician Assistant · NPI 1437739703

Grant S Keefer, MPAS, PA-C is a Physician Assistant in Lahaina, Hawaii. Qualified in 2021, 5 years ago. Practices with Kaanapali Medical Services Inc, a 5-clinician group, works from 2 locations and offers telehealth.

Years since qualifying
5
In the registry since
2021
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

3350 Lowr Honoapiilani RD Ste 211
Lahaina, HI 96761-8404
Phone: (808) 667-7676
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3750 Wailea Alanui Dr Ste B34, Kihei, HI 96753-8342 — (808) 875-7676

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X

Record details

NPI number1437739703
Entity typeIndividual (Type 1)
GenderMale
Credentials MPAS , PA-C
Sole proprietorNo
NPI enumeratedApril 12, 2021
Last updated in NPPESMay 27, 2026
Certification dateMay 27, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Kaanapali Medical Services Inc — 5 clinicians
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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 patients439
Services billed 1,409 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $19 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Kaanapali Medical Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Lahaina