Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marianne Peacock, NP

Family Nurse Practitioner in Traverse City, MI · enumerated 2005 · practices at Rheumatology Consulting PC.

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

National Provider Identifier

1386631455

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Registry record

Entity type Individual (Type 1)

Name Marianne Peacock

Credential NP

Sex Female

Practice address 1115 S Union St, Traverse City, MI, 49684

Phone (231) 935-0550

Fax (231) 935-0551

Enumeration date Oct 4, 2005

Last updated in NPPES Aug 10, 2009

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704219432 (MI) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

Other identifiers

Identifier	Type	State	Issuer
08774010	Other	MI	BCBS OF MICHIGAN
0B81224	Other	MI	BCBS OF MICHIGAN
1386631455	Other	MI	IND NPI
0P24620	Other	MI	MEDICARE PTAN
1245283365	Other	MI	GROUP NPI

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 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.

What specialty is Marianne Peacock?

Marianne Peacock is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Michael Mawby Rheumatology Physician · Traverse City, MI NPI 1720084114 Robert Lazar Allergy & Immunology Physician · Traverse City, MI NPI 1831150770 Rheumatology Consulting PC Pain Medicine (Physical Medicine & Rehabilitation) Physician · Traverse City, MI NPI 1245283365

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-10.