Grant S Keefer , MPAS, PA-C
Physician Assistant • Lahaina, HI
3350 Lower Honoapiilani Rd Ste 211
Lahaina, HI 967618404
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on April 12, 2021; this date does not establish years in practice.
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Published CMS data list 1,251 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- J1100 — Injection, dexamethasone sodium phosphate, 1 mg: 275 service units.
- 99204 — New patient outpatient office visit: 267 service units.
- 99214 — Established patient outpatient office visit: 171 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 15 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 384 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Methylprednisolone — 61 prescription fills, including refills.
- Albuterol Sulfate Hfa (Albuterol Sulfate) — 48 prescription fills, including refills.
- Meloxicam — 37 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 13 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Hawaii (2024, 138 clinicians with data). Median for this group: 95. Middle half: 32 to 303.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 178 in 2021 to 1,251 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2021–2024.
Practice Location & Contact Primary Location
3350 Lower Honoapiilani Rd Ste 211
Lahaina, HI 967618404
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Kihei, HI. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
CMS Doctors and Clinicians lists 1 group name: Kaanapali Medical Services Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2021
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
439 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $73,470 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $46,014 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
390 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$4,494 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $19.33 in 2025
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2025.
Years since graduation
5 years (graduated 2021)
CMS Doctors and Clinicians data list 2021 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2021
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Grant Keefer has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Grant Keefer as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Lahaina and Hawaii
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 90% of clinicians listed under Physician Assistant in Hawaii (2024, 138 clinicians with data). Median for this group: 95. Middle half: 32 to 303.
Too few clinicians listed under Physician Assistant in Lahaina have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Physician Assistant in Hawaii (2024, 138 clinicians with data). Median for this group: $8,016. Middle half: $2,968 to $23,828.
Too few clinicians listed under Physician Assistant in Lahaina have Medicare Part B data for 2024 to compare.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Physician Assistant in Hawaii (2024, 138 clinicians with data). Median for this group: $6,357. Middle half: $2,196 to $16,682.
Too few clinicians listed under Physician Assistant in Lahaina have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Hawaii (2024, 165 clinicians with data). Median for this group: 222. Middle half: 57 to 616.
Too few clinicians listed under Physician Assistant in Lahaina have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Physician Assistant in Hawaii (2024, 165 clinicians with data). Median for this group: $4,835. Middle half: $713 to $52,531.
Too few clinicians listed under Physician Assistant in Lahaina have Medicare Part D data for 2024 to compare.
3 active clinicians are listed under Physician Assistant with a practice address in Lahaina, HI (387 in Hawaii).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 603% from 178 in 2021 to 1,251 in 2024.
- 2021: 178
- 2022: 402
- 2023: 714
- 2024: 1,251
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Medicare-allowed amount
Medicare-allowed amount increased 493% from $12,397 in 2021 to $73,470 in 2024.
- 2021: $12,397
- 2022: $28,060
- 2023: $54,952
- 2024: $73,470
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Paid by Medicare
Paid by Medicare increased 401% from $9,180 in 2021 to $46,014 in 2024.
- 2021: $9,180
- 2022: $20,580
- 2023: $37,000
- 2024: $46,014
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 32% from 290 in 2021 to 384 in 2024.
- 2021: 290
- 2022: 1,004
- 2023: 253
- 2024: 384
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30-day fills
30-day fills decreased 37% from 619 in 2021 to 390 in 2024.
- 2021: 619
- 2022: 2,024
- 2023: 253
- 2024: 390
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Part D drug cost
Part D drug cost increased 33% from $3,375 in 2021 to $4,494 in 2024.
- 2021: $3,375
- 2022: $23,622
- 2023: $2,595
- 2024: $4,494
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $707.16 in 2021 to $19.33 in 2025.
- 2021: $707.16
- 2022: $241.95
- 2023: $96.93
- 2024: $81.23
- 2025: $19.33
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $19.33.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $19.33 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2020–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2021–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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J1100
Injection, dexamethasone sodium phosphate, 1 mg
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275 | 45 | $11.97 | $0.11 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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267 | 267 | $314.02 | $144.55 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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171 | 135 | $360.93 | $110.73 |
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87428
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza
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102 | 98 | $249.75 | $68.60 |
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J1885
Injection, ketorolac tromethamine, per 15 mg
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100 | 24 | $28.66 | $0.60 |
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96372
Injection of drug or substance under skin or into muscle
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90 | 65 | $90.49 | $12.73 |
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J0696
Injection, ceftriaxone sodium, per 250 mg
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50 | 11 | $43.28 | $0.47 |
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81003
Automated urinalysis test
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37 | 36 | $64.65 | $2.20 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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33 | 30 | $256.44 | $80.11 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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30 | 30 | $284.25 | $98.05 |
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87804
Detection test by immunoassay with direct visual observation for influenza virus
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28 | 14 | $96.58 | $14.24 |
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71046
X-ray of chest, 2 views
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21 | 20 | $338.09 | $25.98 |
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87880
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)
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19 | 19 | $90.14 | $16.20 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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15 | 15 | $227.75 | $12.62 |
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87635
Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen
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13 | 13 | $201.25 | $44.28 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Methylprednisolone | Methylprednisolone | 61 | 366 | $519.60 | 58 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 48 | 854 | $1,019.79 | 43 |
| Meloxicam | Meloxicam | 37 | 250 | $44.01 | 35 |
| Mupirocin | Mupirocin | 37 | 505 | $239.61 | 37 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 37 | 199 | $243.90 | 37 |
| Paxlovid | Nirmatrelvir/Ritonavir | 36 | 180 | $1,429.40 | 36 |
| Azithromycin | Azithromycin | 25 | 125 | $138.35 | 24 |
| Doxycycline Hyclate | Doxycycline Hyclate | 25 | 212 | $165.26 | 25 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 19 | 89 | $185.13 | 19 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 18 | 120 | $92.16 | 18 |
| Moxifloxacin | Moxifloxacin Hcl | 16 | 175 | $353.45 | 14 |
| Lisinopril | Lisinopril | 14 | 600 | $18.29 | — |
| Tramadol Hcl | Tramadol Hcl | 11 | 85 | $44.71 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-05-27NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20220816002940
HI
5395144505
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Kaanapali Medical Services Inc
3350l Honoapiilani Hwy, Lahaina, HI 967619413
Phone: 8086677676
Kaanapali Medical Services Inc
3750 Wailea Alanui Dr, Wailea, HI 967538342
Phone: 8086677676
Kaanapali Medical Services Inc
3350 L Honoapiilani Rd, Lahaina, HI 967618404
Secondary Practice Locations
3750 Wailea Alanui Dr Ste B34
Kihei, HI 967538342
Phone: 8088757676
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Physician Assistant
Physician Assistant (Certified)
Physician Assistant - Medical
Physician Assistant (Certified)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 3350 LOWER HONOAPIILANI RD STE 211, LAHAINA, HI 967618404 (Tel: 8086677676)
Registered at 3350 LOWER HONOAPIILANI RD STE 211, LAHAINA, HI 967618404 (Tel: 8179165199)
NPI status registered as active in NPPES database
Registered at 2730 SW WILSHIRE BLVD, BURLESON, TX 760288338 (Tel: 8179165199)
Registered at 2730 SW WILSHIRE BLVD, BURLESON, TX 760288338 (Tel: 8179165199)
Recorded as GRANT KEEFER, MPAS, PA-C
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
3350 Lower Honoapiilani Rd Ste 211
Lahaina, HI 967618404
Phone: 8179165199