Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark L Ostlund, MD

Internal Medicine Physician in Bloomington, MN · enumerated 2006 · practices at Bloomington Lake Clinic, Ltd.

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

National Provider Identifier

1396809182

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Registry record

Entity type Individual (Type 1)

Name Mark L Ostlund

Credential MD

Sex Male

Practice address 7901 Xerxes Ave S Ste 116, Bloomington, MN, 55431

Phone (952) 888-2024

Fax (952) 888-3985

Enumeration date Dec 19, 2006

Last updated in NPPES Apr 4, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 29630 (MN) 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
936877900	Medicaid	MN	-

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 specialty is Mark Ostlund?

Mark Ostlund is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-04.