Dr. Matthew Dan Eichenbaum, MD

Dr. Matthew Dan Eichenbaum is a Orthopaedic Surgery Physician provider (Orthopaedic Surgery) practicing in Wilmington, DE, registered in the NPPES registry with NPI 1831216746 since 2007. The credential MD stands for Doctor of Medicine. Practices at Regional Orthopaedic Associates PA (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1831216746
Entity type	Individual (Type 1)
Name	Dr. Matthew Dan Eichenbaum
Credential	MD
Sex	Male
Practice address	1941 LIMESTONE RD STE 101, Wilmington, DE, 19808
Phone	3026559494
Fax	3026911478
Enumeration date	2007-03-23
Last updated in NPPES	2025-05-15

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207X00000X	Orthopaedic Surgery Physician	Secondary	MD432176	PA
207XS0106X	Orthopaedic Hand Surgery Physician	Secondary	C1-0009482	DE
207X00000X	Orthopaedic Surgery Physician	Primary	C1-0009482	DE

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1831216746	Medicaid	DE	—

Copy-ready billing details

Provider: Matthew Eichenbaum, MD
NPI: 1831216746
Taxonomy: 207X00000X (Orthopaedic Surgery Physician)
Address: 1941 LIMESTONE RD STE 101, Wilmington, DE, 19808

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1487650867	Benjamin Cooper	Individual	Plastic and Reconstructive Surgery Physician	Wilmington, DE
1912986522	Selina Xing	Individual	Pain Medicine (Physical Medicine & Rehabilitation) Physician	Wilmington, DE
1285694935	Mark Eskander	Individual	Orthopaedic Surgery of the Spine Physician	Wilmington, DE
1992762025	Scott Mcgillen	Individual	Physical Therapist	Wilmington, DE
1083660187	Joseph Mesa	Individual	Orthopaedic Surgery Physician	Wilmington, DE
1457390957	John Patterson	Individual	Orthopaedic Surgery Physician	Wilmington, DE
1134169667	James Rubano	Individual	Orthopaedic Surgery Physician	Wilmington, DE
1215977764	Douglas Palma	Individual	Orthopaedic Surgery Physician	Wilmington, DE

Verify this record

Cross-check NPI 1831216746 against the authoritative CMS record: view Dr. Matthew Dan Eichenbaum on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Matthew Eichenbaum?

Matthew Eichenbaum is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-05-15.