Michael Daniel Masterson, MD

Michael Daniel Masterson is a Anesthesiology Physician provider (Anesthesiology) practicing in Eugene, OR, registered in the NPPES registry with NPI 1508857004 since 2005. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1508857004
Entity type	Individual (Type 1)
Name	Michael Daniel Masterson
Credential	MD
Sex	Male
Practice address	Eugene, OR, 97401
Phone	5413442600
Fax	5413443317
Enumeration date	2005-11-02
Last updated in NPPES	2013-02-22

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207L00000X	Anesthesiology Physician	Primary	MD16459	OR

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
008552	Medicaid	OR	—

Copy-ready billing details

Provider: Michael Masterson, MD
NPI: 1508857004
Taxonomy: 207L00000X (Anesthesiology Physician)
Address: Eugene, OR, 97401

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1952353187	Mckenzie Surgery Center Lp	Organization	Ambulatory Surgical Clinic/Center	Eugene, OR
1457388480	Dewayne Ditto	Individual	Anesthesiology Physician	Eugene, OR
1386677748	Fred Felter	Individual	Specialist	Eugene, OR
1386663490	Fred C Felter, MD PC	Organization	Specialist	Eugene, OR
1508942673	Jon Gilbert	Individual	Anesthesiology Physician	Eugene, OR
1528139714	Grant Rusin	Individual	Anesthesiology Physician	Eugene, OR
1891097754	Dewayne Ditto, MD PC	Organization	Anesthesiology Physician	Eugene, OR
1487948238	Rebecca Carroll	Individual	Anesthesiology Physician	Eugene, OR

Verify this record

Cross-check NPI 1508857004 against the authoritative CMS record: view Michael Daniel Masterson 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

How do I verify Michael Masterson's NPI record?

Cross-check NPI 1508857004 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1508857004 active?

Yes — as of the latest NPPES snapshot, NPI 1508857004 is active (record last updated 2013-02-22).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2013-02-22.