Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Jacobi, M.D.

Pediatrics Physician in Michigan City, IN · enumerated 2006.

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

National Provider Identifier

1598735607

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Registry record

Entity type Individual (Type 1)

Name Mark Jacobi

Credential M.D.

Sex Male

Practice address 1225 E Coolspring Ave, Michigan City, IN, 46360

Phone (219) 878-5037

Fax (219) 873-2931

Enumeration date Jan 23, 2006

Last updated in NPPES Nov 16, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 01027648A (IN) 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
100162940	Medicaid	IN	-

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

Is NPI 1598735607 active?

Yes, as of the latest NPPES snapshot, NPI 1598735607 is active (record last updated 2011-11-16).

How do I verify Mark Jacobi's NPI record?

Cross-check NPI 1598735607 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 2011-11-16.