Dr. Nancy M Gideon , MD
Pediatrics • Rehoboth Beach, DE
18947 John J Williams Hwy, Suite 212
Rehoboth Beach, DE 199714476
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
18947 John J Williams Hwy
Suite 212
Rehoboth Beach, DE 199714476
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Millville, DE. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Open Payments general payments, program year 2025
All general payments: $249.41 across 12 records.
By nature of payment
- Food and Beverage: $249.41 across 12 records.
Reporting-company totals (3 largest of 6)
- Sanofi Pasteur Inc.: $92.70 across 5 records.
- Merck Sharp & Dohme LLC: $76.46 across 3 records.
- Organon LLC: $27.37 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
2005
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.
Compared with the same specialty in Rehoboth Beach and Delaware
6 active clinicians are listed under Pediatrics with a practice address in Rehoboth Beach, DE (291 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.
-
Industry payments (Open Payments)
Industry payments (Open Payments) went from $214.83 in 2021 to $249.41 in 2025.
- 2021: $214.83
- 2022: $188.17
- 2023: $190.40
- 2024: $565.51
- 2025: $249.41
Sources: 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): 12 records totaling $249.41.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VAXNEUVANCE | General | $30.00 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
VAXELIS | General | $29.66 |
| Organon LLC |
Food and Beverage
In-kind items and services
|
NEXPLANON | General | $27.37 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE | General | $23.15 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
TZIELD | General | $21.82 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
BEYFORTUS | General | $19.04 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
MENQUADFI | General | $17.52 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
BEYFORTUS | General | $17.49 |
| Merck Sharp & Dohme LLC |
Food and Beverage
In-kind items and services
|
GARDASIL 9 | General | $16.80 |
| Pfizer Inc. |
Food and Beverage
In-kind items and services
|
TRUMENBA | General | $16.14 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
|
MENQUADFI | General | $15.50 |
| Tris Pharma Inc |
Food and Beverage
In-kind items and services
|
Dyanavel XR | General | $14.92 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-01-17NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Secondary Practice Locations
32566 Docs Pl Unit 1
Millville, DE 199676959
Phone: 3026458212
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)
Career & Practice History
NPI enumerated June 16, 2005.
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
Mailing Address
18947 John J Williams Hwy, Suite 212
Rehoboth Beach, DE 199714476
Phone: 3026458212