Dr. Joseph L. Cornatzer , DMD
Dentist - General Practice • Hockessin, DE
7197 Lancaster Pike
Hockessin, DE 197079270
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. Joseph Cornatzer is listed in NPPES under Dentist - General Practice.
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NPI assigned on January 23, 2006; this date does not establish years in practice.
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Published CMS data list 212 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:
- Amoxicillin — 134 prescription fills, including refills.
- Methylprednisolone — 61 prescription fills, including refills.
- Clindamycin Hcl — 17 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 the full table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 95% of clinicians listed under Dentist - General Practice in Delaware (2024, 132 clinicians with data). Median for this group: 37. Middle half: 20 to 68.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 16 in 2020 to 212 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
7197 Lancaster Pike
Hockessin, DE 197079270
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
Dentist - General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
212 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
$653 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 2024
All general payments: $2,196.22 across 31 records.
By nature of payment
- Food and Beverage: $1,139.53 across 25 records.
- Travel and Lodging: $1,056.69 across 6 records.
Reporting-company totals
- ZIMVIE INC.: $2,196.22 across 31 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 2024 (published June 30, 2026).
NPI first issued
2006
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, “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)
Dr. Cornatzer 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 Dr. Cornatzer 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 Hockessin and Delaware
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Dentist - General Practice in Delaware (2024, 132 clinicians with data). Median for this group: 37. Middle half: 20 to 68.
Too few clinicians listed under Dentist - General Practice in Hockessin have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Dentist - General Practice in Delaware (2024, 132 clinicians with data). Median for this group: $126. Middle half: $61 to $249.
Too few clinicians listed under Dentist - General Practice in Hockessin have Medicare Part D data for 2024 to compare.
8 active clinicians are listed under Dentist - General Practice with a practice address in Hockessin, DE (245 in Delaware).
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 D prescriptions
Medicare Part D prescriptions went from 16 in 2020 to 212 in 2024.
- 2020: 16
- 2021: 39
- 2022: 13
- 2023: 94
- 2024: 212
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30-day fills
30-day fills increased 430% from 40 in 2020 to 212 in 2024.
- 2020: 40
- 2021: 63
- 2022: 13
- 2023: 94
- 2024: 212
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Part D drug cost
Part D drug cost decreased 56% from $1,485 in 2020 to $653 in 2024.
- 2020: $1,485
- 2021: $1,180
- 2022: $44
- 2023: $439
- 2024: $653
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $55.56 in 2019 to $2,196.22 in 2024.
- 2019: $55.56
- 2020: $48.74
- 2021: $23.26
- 2023: $3,598.67
- 2024: $2,196.22
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), 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 2024 (payments made January 1 – December 31, 2024): 31 records totaling $2,196.22.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $333.50 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $333.35 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $297.18 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TAPERED SCREW-VENT | General | $137.62 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TSX Implants | General | $107.93 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $100.58 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $89.04 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TAPERED SCREW-VENT | General | $74.93 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TAPERED SCREW-VENT | General | $62.19 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $50.73 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TAPERED SCREW-VENT | General | $48.26 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TSX Implants | General | $47.61 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TAPERED SCREW-VENT | General | $47.58 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TSX Implants | General | $46.22 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $43.33 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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— | General | $42.54 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TSX Implants | General | $34.17 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
|
TAPERED SCREW-VENT | General | $34.00 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
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TAPERED SCREW-VENT | General | $30.94 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
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TAPERED SCREW-VENT | General | $29.33 |
| ZIMVIE INC. |
Travel and Lodging
In-kind items and services
|
TAPERED SCREW-VENT | General | $29.33 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $25.44 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $25.30 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
— | General | $25.07 |
| ZIMVIE INC. |
Food and Beverage
In-kind items and services
|
TSX Implants | General | $23.60 |
(top 25 shown)
Source: CMS Open Payments, program year 2024, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Amoxicillin | Amoxicillin | 134 | 833 | $276.90 | 104 |
| Methylprednisolone | Methylprednisolone | 61 | 367 | $336.12 | 53 |
| Clindamycin Hcl | Clindamycin Hcl | 17 | 97 | $40.26 | 13 |
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
NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSORDER AND REFERRING ONLY - DENTIST
I20150521001643
DE
6103146782
Sources: 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.
Dentist
Doctor of Dental Medicine
Dentist
Doctor of Dental Medicine
Dentist - General Practice
Doctor of Dental Surgery
Career & Practice History
NPI enumerated January 23, 2006.
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 Dentist - General Practices in Hockessin
- Dr. William Gonce, DDS
- Dr. Beatriz Mirabal, DDS
- Dr. Alexis Levendis, DMD
- Dr. Raymond Para, DDS
- Dr. Jillann Hounsell, DDS
- Dr. Trevor Scheff, DDS
Mailing Address
33 Winterbury Cir
Wilmington, DE 198081429
Phone: 3023847939