Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Obermyer, MD

Internal Medicine Physician in Brookfield, WI · enumerated 2008 · practices at Froedtert &the Medical College of Wisconsin Community Physicians, Inc..

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

National Provider Identifier

1669634820

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Obermyer

Credential MD

Sex Male

Practice address 21700 Intertech Dr, Springdale Health Center, Brookfield, WI, 53045

Phone (262) 532-8300

Fax (262) 532-8600

Enumeration date Jun 30, 2008

Last updated in NPPES Jul 10, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036118405 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036118405 (IL) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 51868 (WI) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 51868 (WI) Secondary

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
1669634820	Medicaid	WI	-

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 Obermyer's NPI record?

Cross-check NPI 1669634820 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669634820 active?

Yes, as of the latest NPPES snapshot, NPI 1669634820 is active (record last updated 2012-07-10).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-10.