Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Karch, M.D.

Orthopaedic Surgery Physician in Mammoth Lakes, CA · enumerated 2007.

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

National Provider Identifier

1861548448

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Karch

Credential M.D.

Sex Male

Practice address 85 Sierra Park Rd, Mammoth Lakes, CA, 93546

Phone (760) 934-3311

Fax (760) 872-6790

Enumeration date Jan 26, 2007

Last updated in NPPES Nov 14, 2025

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License A63160 (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
1861548448	Other	VA	TRICARE
1861548448	Other	VA	VIRGINIA PREMIER
1861548448	Other	VA	OPTIMA HEALTH PLAN
1861548448	Other	VA	VIRGINIA HEALTH NETWORK
1861548448	Other	VA	INTOTAL
1861548448	Other	VA	GATEWAY
1861548448	Other	VA	MEDICAID
1861548448	Other	VA	HUMANA MEDICARE
1861548448	Other	VA	CIGNA
1861548448	Other	VA	ANTHEM BLUE CROSS-BLUE SHIELD
1861548448	Other	VA	HEALTHKEEPERS PLUS
1861548448	Other	VA	MAGELLAN CCP
1861548448	Other	VA	UNITED HEALTHCARE
1861548448	Other	VA	AETNA
1861548448	Other	VA	COVENTRY/AETNA BETTER HEALTH
1861548448	Other	VA	HEALTHKEEPERS
1861548448	Other	VA	UNITED MINE WORKERS ASSOCIATION

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 Michael Karch's NPI record?

Cross-check NPI 1861548448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861548448 active?

Yes, as of the latest NPPES snapshot, NPI 1861548448 is active (record last updated 2025-11-14).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-14.