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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GIA FRANCESCA FONTANAZZA MD
NPI 1780376939
Internal Medicine in Selbyville, DE

Active since May 25, 2023PECOS Enrolled
36450 TIDAL RD UNIT 2, SELBYVILLE, DE 19975(302) 291-6045(833) 449-3867 Get Directions Write a Review

NPPES record last updated: August 18, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Aug 18, 2026, May 25, 2023 (2 updates tracked since 2023).

About Dr. Gia Francesca Fontanazza Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GIA FRANCESCA FONTANAZZA MD (NPI 1780376939) is an individual internal medicine provider in Selbyville, Delaware, licensed in Delaware (C1-0029910) and active in the NPI registry since May 2023. She is enrolled in Medicare PECOS and maintains 13 additional practice locations.

NPPES Registry Identity

NPI1780376939
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. GIA FRANCESCA FONTANAZZACredential: MD
Location Address36450 TIDAL RD UNIT 2Selbyville, DE 19975-4596
Mailing Address1515 Savannah Rd Fl 2Lewes, DE 19958-1675 · (302) 645-3499 · Fax (302) 644-4830
Phone(302) 291-6045
Fax(833) 449-3867
Sole ProprietorNo
Enumeration DateMay 25, 2023
Last NPPES UpdateAugust 18, 20262 updates tracked since enumeration
NPPES CertifiedAugust 18, 2026
✔ NPI 1780376939 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in DE · C1-0029910
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
36450 TIDAL RD UNIT 2, Selbyville, DE 19975
Open in Google Maps ↗

Secondary Practice Locations 13

Location 123900 Milton Ellendale HwyMilton, DE 19968-2714 · Phone (302) 684-2033 · Fax (866) 989-3129
Location 236223 Farm Ln Ste 140Rehoboth Beach, DE 19971-1329 · Phone (302) 227-1268 · Fax (844) 242-4410
Location 332550 Docs Pl Unit 2Millville, DE 19967-6975 · Phone (302) 539-4302 · Fax (888) 987-4513
Location 417388 N Village Main Blvd Unit 21Lewes, DE 19958-7240 · Phone (302) 291-6050 · Fax (833) 450-5311
Location 512100 Black Swan Dr Ste 104Lewes, DE 19958-4991 · Phone (302) 645-1315 · Fax (833) 437-1399
Location 621635 Biden Ave Unit 101Georgetown, DE 19947-4575 · Phone (302) 856-9596 · Fax (888) 987-4164
Location 732050 Long Neck RdMillsboro, DE 19966-6228 · Phone (302) 645-3150 · Fax (833) 908-2232
Location 834445 King Street RowLewes, DE 19958-4787 · Phone (302) 645-2833 · Fax (844) 640-3955
Location 918947 John J Williams Hwy Unit 303Rehoboth Beach, DE 19971-4477 · Phone (302) 644-0690 · Fax (844) 242-4410
Location 101008 Kings HwyLewes, DE 19958-1932 · Phone (302) 291-6031 · Fax (833) 954-4028
Location 11100 Silicato Pkwy Ste 200Milford, DE 19963-1271 · Phone (302) 393-2056 · Fax (844) 560-2228
Location 1228538 DuPont Blvd Unit 1Millsboro, DE 19966-4791 · Phone (302) 829-3294 · Fax (833) 314-0538
Location 13232 Mitchell St Unit 301Millsboro, DE 19966-9412 · Phone (302) 316-4190 · Fax (844) 560-1009

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Gia Francesca Fontanazza Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19975 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$131.15 typical visit price
range $57.12 – $173.08
Typical copayment $32.78 (range $14.28 – $43.27)
Most-billed visit code 99204
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SARAH KATELYN DIBUO
Nurse Practitioner
36450 TIDAL RD UNIT 2
SELBYVILLE, DE 19975
Sussex County (302) 291-6045

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gia Fontanazza's NPI number?

The NPI number for Gia Fontanazza is 1780376939. It was assigned to this individual provider in the NPPES registry on May 25, 2023.

Where is Gia Fontanazza located?

Gia Fontanazza practices at 36450 Tidal Rd Unit 2, Selbyville, DE 19975. The listed phone number is (302) 291-6045.

What is Gia Fontanazza's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gia Fontanazza enrolled in Medicare?

Yes. Gia Fontanazza is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gia Fontanazza was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 51 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.