Dr. Gregory K. Wanner , DO, PA-C
Emergency Medicine • Newark, DE
4755 Ogletown Stanton Rd
Newark, DE 197182200
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. Gregory Wanner is listed in NPPES under Emergency Medicine.
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NPI assigned on July 11, 2006; this date does not establish years in practice.
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Published CMS data list 580 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:
- 99285 — Emergency department visit with high level of medical decision making: 277 service units.
- 93010 — Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only: 216 service units.
- 99284 — Emergency department visit with moderate level of medical decision making: 54 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 5 records in the table · Guide: How to read Medicare Part B data
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More Medicare Part B services than 60% of clinicians listed under Emergency Medicine in Newark, DE (2024, 92 clinicians with data). Median for this group: 479. Middle half: 265 to 701.
More Medicare Part B services than 60% of clinicians listed under Emergency Medicine in Delaware (2024, 146 clinicians with data). Median for this group: 479. Middle half: 264 to 721.
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 936 in 2020 to 580 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
4755 Ogletown Stanton Rd
Newark, DE 197182200
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
Philadelphia College Of Osteopathic Medicine
2013
What Public CMS Data Show
Emergency Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
352 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 $59,803 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 $45,499 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.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
Years since graduation
13 years (graduated 2013)
CMS Doctors and Clinicians data list 2013 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
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.
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)
Dr. Wanner 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. Wanner 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 60% of clinicians listed under Emergency Medicine in Newark, DE (2024, 92 clinicians with data). Median for this group: 479. Middle half: 265 to 701.
More Medicare Part B services than 60% of clinicians listed under Emergency Medicine in Delaware (2024, 146 clinicians with data). Median for this group: 479. Middle half: 264 to 721.
Medicare-allowed amount
Close to the middle for clinicians listed under Emergency Medicine in Newark, DE (2024, 92 clinicians with data). Median for this group: $57,769. Middle half: $29,935 to $87,009.
Close to the middle for clinicians listed under Emergency Medicine in Delaware (2024, 146 clinicians with data). Median for this group: $59,611. Middle half: $31,599 to $92,021.
Paid by Medicare
Close to the middle for clinicians listed under Emergency Medicine in Newark, DE (2024, 92 clinicians with data). Median for this group: $44,130. Middle half: $22,724 to $67,681.
Close to the middle for clinicians listed under Emergency Medicine in Delaware (2024, 146 clinicians with data). Median for this group: $44,644. Middle half: $23,384 to $71,971.
142 active clinicians are listed under Emergency Medicine with a practice address in Newark, DE (243 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Newark
0.7% of these 142 clinicians have the CMS telehealth indicator.
50.7% of these 142 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 38% from 936 in 2020 to 580 in 2024.
- 2020: 936
- 2021: 1,007
- 2022: 962
- 2023: 726
- 2024: 580
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Medicare-allowed amount
Medicare-allowed amount decreased 38% from $96,504 in 2020 to $59,803 in 2024.
- 2020: $96,504
- 2021: $106,143
- 2022: $99,277
- 2023: $87,121
- 2024: $59,803
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Paid by Medicare
Paid by Medicare decreased 43% from $79,136 in 2020 to $45,499 in 2024.
- 2020: $79,136
- 2021: $86,573
- 2022: $82,019
- 2023: $70,663
- 2024: $45,499
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
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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99285
Emergency department visit with high level of medical decision making
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277 | 269 | $943.00 | $170.12 |
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93010
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only
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216 | 196 | $43.00 | $7.85 |
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99284
Emergency department visit with moderate level of medical decision making
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54 | 53 | $648.00 | $117.53 |
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99291
Critical care, first 30-74 minutes
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21 | 21 | $1142.00 | $207.13 |
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93308
Ultrasound of heart, follow-up
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12 | 12 | $367.54 | $23.96 |
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.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
NUCC 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.
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 PECOSPRACTITIONER - EMERGENCY MEDICINE
I20210730000342
MD
9537164272
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
4755 Ogletown Stanton Rd, Newark, DE 197182200
Phone: 3028383088
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant
Emergency Medicine
Doctor of Osteopathic Medicine (D.O.)
Physician Assistant
Physician Assistant
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 11, 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 Emergency Medicine Providers in Newark
- Dr. Brian Burgess, MD
- Dr. James Carroll, MD
- Dr. Christopher Cox, MD
- Dr. Ross Megargel, DO
- Dr. Danielle Minett, MD
- Dr. Jonathan Hilton, MD
Mailing Address
Po Box 7529
Newark, DE 197147529
Phone: 3022941468