Dr. James Joseph Maciejewski , MD
Internal Medicine โข Naples, FL
6101 Pine Ridge Rd
Naples, FL 341193900
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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Dr. James Maciejewski is listed in NPPES under Internal Medicine.
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NPI assigned on May 3, 2010; this date does not establish years in practice.
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Published CMS data list 961 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 โ Established patient outpatient office visit: 478 service units.
- G0439 โ Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 256 service units.
- 99214 โ Established patient outpatient office visit: 108 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 8 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 4,534 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium โ 413 prescription fills, including refills.
- Amlodipine Besylate โ 361 prescription fills, including refills.
- Levothyroxine Sodium โ 233 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 78 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Naples, FL (2024, 110 clinicians with data). Median for this group: 1,446. Middle half: 575 to 3,729.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: 687. Middle half: 277 to 1,489.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,685 in 2020 to 961 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
6101 Pine Ridge Rd
Naples, FL 341193900
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
424 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 โ by Provider, 2024.
Medicare-allowed amount
About $108,153 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 โ by Provider and Service, 2024.
Paid by Medicare
About $82,796 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 โ by Provider and Service, 2024.
30-day fills
12,142 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
$252,767 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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $59.24 across 4 records.
By nature of payment
- Food and Beverage: $59.24 across 4 records.
Reporting-company totals (3 largest of 4)
- Pfizer Inc.: $23.74 across 1 record.
- Resmed Corp: $16.82 across 1 record.
- Novartis Pharmaceuticals Corporation: $14.50 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2010
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Can order Medicare-covered services
CMS lists Dr. Maciejewski 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 Naples and Florida
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Internal Medicine in Naples, FL (2024, 110 clinicians with data). Median for this group: 1,446. Middle half: 575 to 3,729.
More Medicare Part B services than 60% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: 687. Middle half: 277 to 1,489.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Naples, FL (2024, 110 clinicians with data). Median for this group: $140,716. Middle half: $58,754 to $257,751.
A higher Medicare-allowed amount than 65% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: $68,256. Middle half: $27,620 to $138,398.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Naples, FL (2024, 110 clinicians with data). Median for this group: $108,229. Middle half: $47,178 to $194,250.
A higher Medicare payment amount than 65% of clinicians listed under Internal Medicine in Florida (2024, 5,815 clinicians with data). Median for this group: $52,728. Middle half: $20,807 to $107,475.
Medicare Part D prescriptions
More Part D prescriptions than 70% of clinicians listed under Internal Medicine in Naples, FL (2024, 150 clinicians with data). Median for this group: 1,032. Middle half: 154 to 4,796.
More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Florida (2024, 6,545 clinicians with data). Median for this group: 1,318. Middle half: 158 to 5,882.
Part D drug cost
A higher Part D drug cost than 60% of clinicians listed under Internal Medicine in Naples, FL (2024, 150 clinicians with data). Median for this group: $78,966. Middle half: $11,267 to $510,855.
A higher Part D drug cost than 60% of clinicians listed under Internal Medicine in Florida (2024, 6,545 clinicians with data). Median for this group: $86,865. Middle half: $8,159 to $434,445.
208 active clinicians are listed under Internal Medicine with a practice address in Naples, FL (10,165 in Florida).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Naples
22.1% of these 208 clinicians have the CMS telehealth indicator.
59.6% of these 208 clinicians are listed by CMS as accepting Medicare assignment.
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 decreased 43% from 1,685 in 2020 to 961 in 2024.
- 2020: 1,685
- 2021: 1,427
- 2022: 1,461
- 2023: 1,149
- 2024: 961
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Medicare-allowed amount
Medicare-allowed amount decreased 21% from $137,758 in 2020 to $108,153 in 2024.
- 2020: $137,758
- 2021: $145,664
- 2022: $141,132
- 2023: $128,565
- 2024: $108,153
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Paid by Medicare
Paid by Medicare decreased 26% from $112,410 in 2020 to $82,796 in 2024.
- 2020: $112,410
- 2021: $117,809
- 2022: $110,732
- 2023: $101,183
- 2024: $82,796
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 4,494 in 2020 and 4,534 in 2024.
- 2020: 4,494
- 2021: 4,422
- 2022: 4,848
- 2023: 4,365
- 2024: 4,534
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30-day fills
30-day fills stayed about the same: 11,715 in 2020 and 12,142 in 2024.
- 2020: 11,715
- 2021: 11,745
- 2022: 12,849
- 2023: 11,588
- 2024: 12,142
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Part D drug cost
Part D drug cost increased 21% from $208,398 in 2020 to $252,767 in 2024.
- 2020: $208,398
- 2021: $163,826
- 2022: $188,305
- 2023: $206,227
- 2024: $252,767
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $19.05 in 2021 to $59.24 in 2025.
- 2021: $19.05
- 2022: $374.09
- 2023: $631.44
- 2024: $438.55
- 2025: $59.24
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 ยท 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 โ December 31, 2025): fewer than 11 records totaling $59.24.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Pfizer Inc. |
Food and Beverage
In-kind items and services
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PREVNAR 20 | General | $23.74 |
| Resmed Corp |
Food and Beverage
Cash or cash equivalent
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AIRSENSE | General | $16.82 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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LEQVIO | General | $14.50 |
| CVRx, Inc. |
Food and Beverage
Cash or cash equivalent
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Barostim Neo System | General | $4.18 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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 โ by Provider and Service data, 2017โ2024; 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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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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478 | 309 | $202.00 | $92.61 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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256 | 256 | $309.00 | $133.11 |
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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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108 | 91 | $297.00 | $131.40 |
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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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26 | 26 | $300.00 | $115.49 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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25 | 24 | $81.00 | $13.79 |
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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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23 | 23 | $461.00 | $172.52 |
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99495
Transitional care management services for problem of at least moderate complexity
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23 | 22 | $450.00 | $205.84 |
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G0438
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
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22 | 22 | $466.00 | $162.21 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 413 | 36,480 | $3,684.37 | 123 |
| Amlodipine Besylate | Amlodipine Besylate | 361 | 31,986 | $2,059.59 | 111 |
| Levothyroxine Sodium | Levothyroxine Sodium | 233 | 20,018 | $1,919.28 | 70 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 216 | 18,667 | $3,751.11 | 70 |
| Irbesartan | Irbesartan | 202 | 17,580 | $3,488.76 | 58 |
| Losartan Potassium | Losartan Potassium | 192 | 16,963 | $1,998.85 | 63 |
| Omeprazole | Omeprazole | 147 | 13,090 | $1,724.33 | 45 |
| Lisinopril | Lisinopril | 143 | 12,875 | $882.05 | 43 |
| Ezetimibe | Ezetimibe | 133 | 11,256 | $4,000.66 | 44 |
| Metformin Hcl | Metformin Hcl | 113 | 9,180 | $635.39 | 37 |
| Alprazolam | Alprazolam | 112 | 3,633 | $548.95 | 29 |
| Simvastatin | Simvastatin | 107 | 9,238 | $1,330.21 | 31 |
| Metoprolol Succinate | Metoprolol Succinate | 105 | 8,974 | $1,590.21 | 32 |
| Pantoprazole Sodium | Pantoprazole Sodium | 104 | 8,826 | $964.12 | 32 |
| Hydrochlorothiazide | Hydrochlorothiazide | 97 | 8,740 | $588.75 | 32 |
| Allopurinol | Allopurinol | 92 | 8,060 | $929.62 | 25 |
| Pravastatin Sodium | Pravastatin Sodium | 87 | 7,680 | $930.61 | 26 |
| Sertraline Hcl | Sertraline Hcl | 75 | 6,333 | $784.96 | 29 |
| Alendronate Sodium | Alendronate Sodium | 72 | 5,991 | $411.08 | 21 |
| Tamsulosin Hcl | Tamsulosin Hcl | 60 | 5,200 | $793.41 | 21 |
| Gabapentin | Gabapentin | 58 | 4,363 | $1,364.12 | 22 |
| Chlorthalidone | Chlorthalidone | 56 | 4,708 | $521.70 | 16 |
| Lorazepam | Lorazepam | 56 | 1,686 | $281.54 | 11 |
| Trazodone Hcl | Trazodone Hcl | 56 | 4,723 | $296.93 | 17 |
| Duloxetine Hcl | Duloxetine Hcl | 54 | 3,468 | $789.51 | 14 |
(top 25 shown)
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: 2020-09-03NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner
Radiology - Vascular & Interventional Radiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Hospitalist
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Podiatrist - Foot & Ankle Surgery
Doctor of Podiatric Medicine
Career & Practice History
NPI enumerated May 03, 2010.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine Providers in Naples
- Dr. Mark Goldstein, MD
- Dr. Paul Zuercher, MD
- Marjan Rabbani
- Dr. Robert Brus, DO
- Dr. Fritz Lemoine, MD
- Dr. Jeffrey Howland, MD
Mailing Address
6101 Pine Ridge Rd
Naples, FL 341193900
Phone: 2393484101