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

Mark E Reader, D.O.

Otolaryngology Physician in Porterville, CA · enumerated 2006.

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

National Provider Identifier

1649363334

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Registry record

Entity type Individual (Type 1)

Name Mark E Reader

Credential D.O.

Sex Male

Practice address Porterville, CA, 93257

Phone (559) 781-3700

Enumeration date Oct 2, 2006

Last updated in NPPES Nov 12, 2025

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

Taxonomy & licenses

207YX0901X Otology & Neurotology Physician Allopathic & Osteopathic Physicians · License 20A8888 (CA) Secondary

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 20A8888 (CA) 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
421387379	Other	-	TRICARE
4536696	Other	-	AETNA
020A88880	Other	-	BLUE SHIELD
421387379	Other	-	BLUE CROSS
4213873790	Other	-	ADVANTEK
421387379A	Other	-	HEALTHNET
00AX88880	Medicaid	CA	-

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.

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Frequently asked questions

How do I verify Mark Reader's NPI record?

Cross-check NPI 1649363334 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1649363334 active?

Yes, as of the latest NPPES snapshot, NPI 1649363334 is active (record last updated 2025-11-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-12.