Aaron R Block , PA-C
Physician Assistant • Lewes, DE
16337 Coastal Hwy
Lewes, DE 199583607
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 January 30, 2007; this date does not establish years in practice.
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Published CMS data list 387 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:
- 99205 — New patient outpatient office visit: 119 service units.
- 99215 — Established patient outpatient office visit: 75 service units.
- 99483 — Assessment of and care planning for patient with impaired thought processing: 64 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 8 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,110 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:
- Donepezil Hcl — 126 prescription fills, including refills.
- Memantine Hcl — 112 prescription fills, including refills.
- Atorvastatin Calcium — 88 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 31 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Physician Assistant in Lewes, DE (2024, 30 clinicians with data). Median for this group: 805. Middle half: 245 to 2,042.
Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: 270. Middle half: 87 to 688.
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 350 in 2020 to 387 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
16337 Coastal Hwy
Lewes, DE 199583607
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Christiana Care Health 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
2005
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
243 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 $55,072 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 $42,418 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
2,859 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
$45,324 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.
Open Payments general payments, program year 2025
All general payments: $82.28 across 3 records.
By nature of payment
- Food and Beverage: $82.28 across 3 records.
Reporting-company totals
- Eisai Inc.: $82.28 across 3 records.
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).
Years since graduation
21 years (graduated 2005)
CMS Doctors and Clinicians data list 2005 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
2007
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.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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?”
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.
Enrolled in Medicare (PECOS)
Aaron Block 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 Aaron Block 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 Lewes and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 65% of clinicians listed under Physician Assistant in Lewes, DE (2024, 30 clinicians with data). Median for this group: 805. Middle half: 245 to 2,042.
Close to the middle for clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: 270. Middle half: 87 to 688.
Medicare-allowed amount
Close to the middle for clinicians listed under Physician Assistant in Lewes, DE (2024, 30 clinicians with data). Median for this group: $77,363. Middle half: $27,391 to $111,737.
A higher Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: $20,935. Middle half: $8,185 to $49,614.
Paid by Medicare
Close to the middle for clinicians listed under Physician Assistant in Lewes, DE (2024, 30 clinicians with data). Median for this group: $56,951. Middle half: $20,419 to $78,576.
A higher Medicare payment amount than 75% of clinicians listed under Physician Assistant in Delaware (2024, 347 clinicians with data). Median for this group: $15,940. Middle half: $6,131 to $36,829.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Physician Assistant in Lewes, DE (2024, 32 clinicians with data). Median for this group: 425. Middle half: 166 to 988.
More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Delaware (2024, 323 clinicians with data). Median for this group: 250. Middle half: 92 to 740.
Part D drug cost
A higher Part D drug cost than 65% of clinicians listed under Physician Assistant in Lewes, DE (2024, 32 clinicians with data). Median for this group: $5,106. Middle half: $1,532 to $132,135.
A higher Part D drug cost than 70% of clinicians listed under Physician Assistant in Delaware (2024, 323 clinicians with data). Median for this group: $3,978. Middle half: $611 to $67,690.
44 active clinicians are listed under Physician Assistant with a practice address in Lewes, DE (695 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lewes
11.4% of these 44 clinicians have the CMS telehealth indicator.
68.2% of these 44 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 increased 11% from 350 in 2020 to 387 in 2024.
- 2020: 350
- 2021: 679
- 2022: 800
- 2023: 844
- 2024: 387
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Medicare-allowed amount
Medicare-allowed amount increased 153% from $21,797 in 2020 to $55,072 in 2024.
- 2020: $21,797
- 2021: $49,253
- 2022: $73,912
- 2023: $81,663
- 2024: $55,072
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Paid by Medicare
Paid by Medicare increased 183% from $14,975 in 2020 to $42,418 in 2024.
- 2020: $14,975
- 2021: $36,617
- 2022: $54,544
- 2023: $64,104
- 2024: $42,418
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 1361% from 76 in 2019 to 1,110 in 2024.
- 2019: 76
- 2021: 270
- 2022: 1,342
- 2023: 2,604
- 2024: 1,110
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30-day fills
30-day fills increased 2066% from 132 in 2019 to 2,859 in 2024.
- 2019: 132
- 2021: 481
- 2022: 3,191
- 2023: 6,432
- 2024: 2,859
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Part D drug cost
Part D drug cost increased 2334% from $1,862 in 2019 to $45,324 in 2024.
- 2019: $1,862
- 2021: $3,518
- 2022: $52,115
- 2023: $164,450
- 2024: $45,324
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $13.07 in 2021 to $82.28 in 2025.
- 2021: $13.07
- 2022: $397.05
- 2023: $528.69
- 2024: $301.22
- 2025: $82.28
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 $82.28.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Eisai Inc. |
Food and Beverage
In-kind items and services
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Leqembi | General | $32.20 |
| Eisai Inc. |
Food and Beverage
In-kind items and services
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Leqembi | General | $26.09 |
| Eisai Inc. |
Food and Beverage
In-kind items and services
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Leqembi | General | $23.99 |
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 2016–2023 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, 2017–2024; 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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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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119 | 119 | $612.47 | $184.12 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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75 | 58 | $461.62 | $150.17 |
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99483
Assessment of and care planning for patient with impaired thought processing, typically 60 minutes
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64 | 64 | $535.34 | $229.49 |
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G2211
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
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38 | 38 | $83.36 | $13.78 |
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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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28 | 28 | $160.75 | $75.61 |
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G2212
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or
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27 | 27 | $144.11 | $26.23 |
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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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19 | 19 | $254.97 | $107.03 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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17 | 17 | $281.50 | $107.59 |
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 |
|---|---|---|---|---|---|
| Donepezil Hcl | Donepezil Hcl | 126 | 7,920 | $1,554.37 | 50 |
| Memantine Hcl | Memantine Hcl | 112 | 6,109 | $3,542.72 | 54 |
| Atorvastatin Calcium | Atorvastatin Calcium | 88 | 7,680 | $951.22 | 48 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 65 | 5,580 | $860.63 | 30 |
| Trazodone Hcl | Trazodone Hcl | 59 | 4,200 | $602.92 | 30 |
| Omeprazole | Omeprazole | 55 | 4,746 | $769.27 | 27 |
| Losartan Potassium | Losartan Potassium | 51 | 4,580 | $748.22 | 25 |
| Lisinopril | Lisinopril | 47 | 3,960 | $232.52 | 27 |
| Levothyroxine Sodium | Levothyroxine Sodium | 47 | 3,990 | $483.68 | 24 |
| Amlodipine Besylate | Amlodipine Besylate | 44 | 3,920 | $183.52 | 23 |
| Escitalopram Oxalate | Escitalopram Oxalate | 38 | 2,734 | $553.64 | 22 |
| Tamsulosin Hcl | Tamsulosin Hcl | 34 | 2,942 | $591.89 | 19 |
| Hydrochlorothiazide | Hydrochlorothiazide | 30 | 2,513 | $103.07 | 16 |
| Simvastatin | Simvastatin | 27 | 2,374 | $107.76 | 13 |
| Metformin Hcl | Metformin Hcl | 27 | 2,333 | $205.56 | 13 |
| Sertraline Hcl | Sertraline Hcl | 25 | 2,070 | $335.72 | 11 |
| Metoprolol Succinate | Metoprolol Succinate | 25 | 2,100 | $384.00 | 11 |
| Furosemide | Furosemide | 20 | 1,495 | $112.13 | 12 |
| Fluticasone Propionate | Fluticasone Propionate | 19 | 1,318 | $291.56 | — |
| Gabapentin | Gabapentin | 18 | 1,283 | $258.22 | 11 |
| Allopurinol | Allopurinol | 18 | 1,620 | $119.53 | — |
| Quetiapine Fumarate | Quetiapine Fumarate | 18 | 1,080 | $373.43 | — |
| Ropinirole Hcl | Ropinirole Hcl | 17 | 1,150 | $243.33 | — |
| Clopidogrel | Clopidogrel Bisulfate | 15 | 1,275 | $96.88 | — |
| Citalopram Hbr | Citalopram Hydrobromide | 14 | 1,260 | $80.99 | — |
(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: 2023-10-20NUCC 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
I20070307000101
DE
1759484066
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
Christiana Care Health Services Inc
501 W 14th St, Wilmington, DE 198011013
Christiana Care Health Services Inc
18742 Coastal Hwy, Rehoboth Beach, DE 199716149
Christiana Care Health Services Inc
18742 Coastal Hwy, Rehoboth Beach, DE 199716149
Phone: 3023209420
Christiana Care Health Services Inc
501 W 14th St Gateway Bldg 5th Flr, Wilmington, DE 198011013
Phone: 3023206240
Christiana Care Health Services Inc
1401 Foulk Rd, Wilmington, DE 198032764
Christiana Care Health Services Inc
501 W 14th St Wilmington Hospital, Wilmington, DE 198011013
Christiana Care Health Services Inc
501 W 14th St Fl, Wilmington, DE 198011013
Phone: 3023201300
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner - Family
Family Nurse Practitioner (Board Certified)
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner - Family
Advanced Practice Registered Nurse
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 16337 COASTAL HWY, LEWES, DE 199583607 (Tel: 3022919900)
Registered at 16337 COASTAL HWY, LEWES, DE 199583607 (Tel: 3022919900)
NPI status registered as active in NPPES database
Registered at 20251 JOHN J WILLIAMS HWY, LEWES, DE 199584314 (Tel: 3026446860)
Registered at 20251 JOHN J WILLIAMS HWY, LEWES, DE 199584314 (Tel: 3026446860)
Recorded as AARON BLOCK, P.A.-C
Physician Assistant (license number reported to NPPES: DE C50000564)
NPI status registered as active in NPPES database
Registered at 20251 JOHN J WILLIAMS HWY, LEWES, DE 199584314 (Tel: 3026446860)
Registered at 20251 JOHN J WILLIAMS HWY, LEWES, DE 199584314 (Tel: 3026446860)
Recorded as AARON BLOCK, P.A.-C
Physician Assistant (license number reported to NPPES: DE C50000564)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Lewes
- Sarah Stamm, PA
- Christine Martindale, PA
- Kelly Goodenough, PA-C
- Bryan Pepper, PA
- Thomas Cathcart, PA-C
- Katelin Talbert, PA-C
Mailing Address
16337 Coastal Hwy
Lewes, DE 199583607
Phone: 3022919900