Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Frymark, MD

Surgery Physician in La Grange Highlands, IL · enumerated 2006.

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

National Provider Identifier

1306895792

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Registry record

Entity type Individual (Type 1)

Name Dr. William Frymark

Credential MD

Sex Male

Practice address 5201 Willow Springs Rd, Suite 290, La Grange Highlands, IL, 60525

Phone (708) 579-0018

Fax (708) 354-0264

Enumeration date May 10, 2006

Last updated in NPPES Mar 18, 2015

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 36058046 (IL) 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
036058046	Medicaid	IL	-
403270	Other	-	GROUP MEDICARE PTAN

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for William Frymark?

The National Provider Identifier (NPI) for William Frymark is 1306895792, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Frymark practice?

The practice location on file with NPPES is in La Grange Highlands, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-18.