Mark Landis , NP
Nurse Practitioner โข Newark, DE
700 Prides Xing Ste 200
Newark, DE 197136109
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 May 1, 2007; this date does not establish years in practice.
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Published CMS data list 15,263 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:
- J0585 โ Injection, onabotulinumtoxina, 1 unit: 13,000 service units.
- 69210 โ Removal of impacted ear wax: 957 service units.
- 99213 โ Established patient outpatient office visit: 902 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 1,004 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:
- Nortriptyline Hcl โ 314 prescription fills, including refills.
- Topiramate โ 147 prescription fills, including refills.
- Fluticasone Propionate โ 78 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 21 records in the table ยท Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 58 clinicians with data). Median for this group: 240. Middle half: 57 to 490.
More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Delaware (2024, 220 clinicians with data). Median for this group: 372. Middle half: 118 to 824.
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 7,057 in 2020 to 15,263 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
700 Prides Xing Ste 200
Newark, DE 197136109
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: Ent And Allergy Of Delaware Llc. 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
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
1,011 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 $226,043 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 $160,220 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
1,937 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
$80,602 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: $1,028.40 across 63 records.
By nature of payment
- Food and Beverage: $1,028.40 across 63 records.
Reporting-company totals (3 largest of 9)
- Pfizer Inc.: $285.97 across 27 records.
- BioCryst Pharmaceuticals, Inc.: $248.14 across 7 records.
- ABBVIE INC.: $216.35 across 17 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, โDoes your provider accept Medicare as full payment?โ
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)
Mark Landis 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 Mark Landis 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 Newark and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 58 clinicians with data). Median for this group: 240. Middle half: 57 to 490.
More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Delaware (2024, 220 clinicians with data). Median for this group: 372. Middle half: 118 to 824.
Medicare-allowed amount
A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 58 clinicians with data). Median for this group: $16,819. Middle half: $5,991 to $40,245.
A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Delaware (2024, 220 clinicians with data). Median for this group: $27,904. Middle half: $10,080 to $59,546.
Paid by Medicare
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 58 clinicians with data). Median for this group: $12,870. Middle half: $4,735 to $29,951.
A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Delaware (2024, 220 clinicians with data). Median for this group: $20,169. Middle half: $7,749 to $44,071.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 55 clinicians with data). Median for this group: 316. Middle half: 108 to 705.
More Part D prescriptions than 65% of clinicians listed under Nurse Practitioner in Delaware (2024, 238 clinicians with data). Median for this group: 427. Middle half: 115 to 1,455.
Part D drug cost
A higher Part D drug cost than 60% of clinicians listed under Nurse Practitioner in Newark, DE (2024, 55 clinicians with data). Median for this group: $29,716. Middle half: $2,472 to $219,981.
Close to the middle for clinicians listed under Nurse Practitioner in Delaware (2024, 238 clinicians with data). Median for this group: $41,667. Middle half: $2,414 to $216,454.
113 active clinicians are listed under Nurse Practitioner with a practice address in Newark, DE (547 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Newark
13.3% of these 113 clinicians have the CMS telehealth indicator.
59.3% of these 113 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 116% from 7,057 in 2020 to 15,263 in 2024.
- 2020: 7,057
- 2021: 9,795
- 2022: 5,821
- 2023: 12,311
- 2024: 15,263
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Medicare-allowed amount
Medicare-allowed amount increased 66% from $136,024 in 2020 to $226,043 in 2024.
- 2020: $136,024
- 2021: $225,771
- 2022: $111,861
- 2023: $233,996
- 2024: $226,043
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Paid by Medicare
Paid by Medicare increased 68% from $95,648 in 2020 to $160,220 in 2024.
- 2020: $95,648
- 2021: $163,822
- 2022: $84,253
- 2023: $166,456
- 2024: $160,220
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 1,015 in 2020 and 1,004 in 2024.
- 2020: 1,015
- 2021: 1,007
- 2022: 997
- 2023: 963
- 2024: 1,004
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30-day fills
30-day fills stayed about the same: 1,830 in 2020 and 1,937 in 2024.
- 2020: 1,830
- 2021: 1,776
- 2022: 1,786
- 2023: 1,772
- 2024: 1,937
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Part D drug cost
Part D drug cost increased 48% from $54,488 in 2020 to $80,602 in 2024.
- 2020: $54,488
- 2021: $64,687
- 2022: $59,202
- 2023: $108,871
- 2024: $80,602
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Industry payments (Open Payments)
Industry payments (Open Payments) stayed about the same: $1,019.04 in 2021 and $1,028.40 in 2025.
- 2021: $1,019.04
- 2022: $897.83
- 2023: $799.64
- 2024: $899.22
- 2025: $1,028.40
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): 63 records totaling $1,028.40.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $44.91 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $42.70 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $34.53 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $33.90 |
| CSL Behring |
Food and Beverage
In-kind items and services
|
Hizentra | General | $33.88 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Hizentra | General | $33.14 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $33.09 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
ORLADEYO | General | $32.86 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $32.75 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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HYQVIA | General | $32.67 |
| Incyte Corporation |
Food and Beverage
Cash or cash equivalent
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OPZELURA | General | $27.05 |
| BioCryst Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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ORLADEYO | General | $26.49 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Hizentra | General | $25.12 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $24.90 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
CUVITRU | General | $24.67 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $24.08 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $22.57 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $21.67 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $21.38 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $21.15 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
AYVAKIT | General | $21.14 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $19.64 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $19.56 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
UBRELVY | General | $19.38 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
NURTEC ODT | General | $19.09 |
(top 25 shown)
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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J0585
Injection, onabotulinumtoxina, 1 unit
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13,000 | 23 | $21.72 | $6.26 |
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69210
Removal of impacted ear wax
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957 | 640 | $120.22 | $40.09 |
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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
|
902 | 669 | $228.94 | $75.69 |
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
216 | 189 | $320.43 | $107.32 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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73 | 71 | $142.35 | $47.46 |
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64615
Injection of chemical for paralysis of facial and neck nerve muscles on both sides of face
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65 | 23 | $387.78 | $128.91 |
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69220
Simple removal of skin debris and drainage of mastoid cavity
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31 | 23 | $203.58 | $70.01 |
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G0268
Removal of impacted cerumen (one or both ears) by physician on same date of service as audiologic function testing
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19 | 19 | $134.07 | $43.64 |
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 |
|---|---|---|---|---|---|
| Nortriptyline Hcl | Nortriptyline Hcl | 314 | 23,278 | $7,981.93 | 98 |
| Topiramate | Topiramate | 147 | 10,725 | $3,006.63 | 47 |
| Fluticasone Propionate | Fluticasone Propionate | 78 | 3,570 | $1,085.63 | 32 |
| Sumatriptan Succinate | Sumatriptan Succinate | 66 | 1,895 | $1,050.83 | 21 |
| Prednisone | Prednisone | 42 | 292 | $51.93 | 38 |
| Clonazepam | Clonazepam | 39 | 1,154 | $68.75 | โ |
| Fluocinolone Acetonide Oil | Fluocinolone Acetonide Oil | 34 | 1,273 | $1,012.62 | 28 |
| Rizatriptan | Rizatriptan Benzoate | 28 | 909 | $398.28 | โ |
| Propranolol Hcl Er | Propranolol Hcl | 28 | 2,400 | $2,522.16 | โ |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 26 | 1,350 | $514.17 | โ |
| Omeprazole | Omeprazole | 24 | 1,710 | $272.27 | โ |
| Aimovig Autoinjector | Erenumab-Aooe | 23 | 870 | $20,851.80 | โ |
| Qulipta | Atogepant | 22 | 1,080 | $36,701.78 | โ |
| Propranolol Hcl | Propranolol Hcl | 21 | 1,650 | $521.94 | โ |
| Azelastine Hcl | Azelastine Hcl | 21 | 795 | $718.20 | 11 |
| Neomycin-Polymyxin-Hc | Neomycin/Polymyxin B/Hydrocort | 20 | 293 | $930.52 | 13 |
| Ipratropium Bromide | Ipratropium Bromide | 19 | 952 | $883.97 | 11 |
| Verapamil Hcl | Verapamil Hcl | 14 | 930 | $179.06 | โ |
| Zolmitriptan Odt | Zolmitriptan | 14 | 234 | $322.62 | โ |
| Ciprofloxacin-Dexamethasone | Ciprofloxacin Hcl/Dexameth | 13 | 207 | $1,496.32 | 11 |
| Ondansetron Hcl | Ondansetron Hcl | 11 | 77 | $30.39 | โ |
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: 2020-08-17NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20111129000677
DE
6608040753
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
Ent And Allergy Of Delaware Llc
1401 Foulk Rd, Wilmington, DE 198032764
Phone: 3029980300
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Otolaryngology
Allergy & Immunology
Doctor of Medicine (M.D.)
Otolaryngology
Doctor of Medicine (M.D.)
Specialist
Audiologist
Doctor of Audiology
Audiologist
Doctor of Audiology
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 700 PRIDES XING STE 200, NEWARK, DE 197136109 (Tel: 3029980300)
Registered at 700 PRIDES XING STE 200, NEWARK, DE 197136109 (Tel: 3029980300)
NPI status registered as active in NPPES database
Registered at 1102 DUPONT HIGHWAY, DOVER, DE 19901 (Tel: 3027347676)
Registered at 701 FOULK ROAD, SUITE 2A, WILMINGTON, DE 19050 (Tel: 3026611661)
Recorded as MARK LANDIS, N.P.
Nurse Practitioner (license number reported to NPPES: DE L1-0026969)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Newark
- Madeline Burgos, APRN-BC
- Diane Hochstuhl, APN
- Dr. Jessica Nolden, DNP, FNP-BC
- Kimberly Wanner, AGNP
- Daniela Fernandez, NP
- Jackline Nanga-Nsemwa, MSN FNP-BC
Mailing Address
700 Prides Xing Ste 200
Newark, DE 197136109
Phone: 3029980300