Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Donald Clarke Tilton, D.O.

Radiation Oncology Physician in Dover, DE · enumerated 2006 · practices at Delaware Radiation Associates, PA.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1952380123

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Registry record

Entity type Individual (Type 1)

Name Dr. Donald Clarke Tilton

Credential D.O.

Sex Male

Practice address Dover, DE, 19904

Phone (302) 674-4401

Fax (302) 674-4129

Enumeration date Jan 16, 2006

Last updated in NPPES Aug 18, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License C2-0000696 (DE) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
160403	Medicaid	DE	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Donald Tilton practice?

The practice location on file with NPPES is in Dover, DE. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Donald Tilton?

The National Provider Identifier (NPI) for Donald Tilton is 1952380123, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Delaware Radiation Associates, PA Radiation Oncology Physician · Dover, DE NPI 1306893458 Kristen Anderson Physician Assistant · Dover, DE NPI 1780862706 Michal Bartel Gastroenterology Physician · Dover, DE NPI 1902036783 Melissa Mackel Sports Medicine (Family Medicine) Physician · Dover, DE NPI 1437410198 Abhishek Agnihotri Gastroenterology Physician · Dover, DE NPI 1174906622 Stephanie Nguyen Physician Assistant · Dover, DE NPI 1659910693

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-18.