Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Charles William Gustav Eifrig, M.D.

Retina Specialist (Ophthalmology) Physician in Laguna Hills, CA · enumerated 2006.

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

National Provider Identifier

1306812979

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Registry record

Entity type Individual (Type 1)

Name Dr. Charles William Gustav Eifrig

Credential M.D.

Sex Male

Practice address 23521 Paseo De Valencia, Suite 207 (Taj Majal Building), Laguna Hills, CA, 92653

Phone (949) 707-5125

Enumeration date Feb 24, 2006

Last updated in NPPES Mar 31, 2017

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 200300335 (NC) Secondary

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License C53104 (CA) Secondary

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License C53104 (CA) Primary

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
DB4007	Other	-	RAILROAD MEDICARE GROUP
P00102182	Other	-	RR MEDICARE INDIVIDUAL ID
562043271	Other	-	OPTICARE GROUP ID
134EF	Other	-	BCBS INDIVIDUAL ID
2090301	Other	-	UNITED HEALTHCARE INDIVID
562043271	Other	-	MAMSI GROUP ID
562043271	Other	-	UNITED HEALTHCARE GROUP
C7150	Other	-	MEDCOST INDIVIDUAL ID
26600	Other	-	OPTICARE INDIVIDUAL ID
562043271	Other	-	MEDCOST GROUP ID
89134EF	Medicaid	NC	-
2115757	Other	-	MAMSI INDIVIDUAL ID
3201207	Other	-	AETNA HMO INDIVIDUAL ID
7674444	Other	-	AETNA PPO INDIVIDUAL ID
014T8	Other	-	BCBS GROUP ID
89014T8	Medicaid	NC	-
562043271	Other	-	AETNA HMO/PPO GROUP ID

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

Is NPI 1306812979 active?

Yes, as of the latest NPPES snapshot, NPI 1306812979 is active (record last updated 2017-03-31).

How do I verify Charles Eifrig's NPI record?

Cross-check NPI 1306812979 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-31.