Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Neil Gaskill, DO

Individual provider Internal Medicine Physician · NPI 1336534700

Dr. Neil Gaskill, DO practises Internal Medicine in Lewes, Delaware. Qualified in 2015, 11 years ago. Practices with Gdg Square, LLC, a 5-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Delaware.

Years since qualifying
11
Licensed in
DE
In the registry since
2015
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

424 Savannah Rd
Lewes, DE 19958-1462
Phone: (302) 645-3525
Fax: (302) 645-3513
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 22303 Dupont Blvd, Georgetown, DE 19947-2153 — (302) 440-4866
  • 1305 Savannah Rd, Lewes, DE 19958-1501 — (302) 291-6450
  • 501 W 14th St, Wilmington, DE 19801-1013 — (302) 428-4410

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C2-0013458 (DE)

Record details

NPI number1336534700
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedApril 2, 2015
Last updated in NPPESJune 4, 2025
Certification dateJune 4, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Gdg Square, Llc — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,070
Services billed 2,897 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Gdg Square, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 2 are shown here.

Other providers in Lewes