Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Algimantas P Maciulis, MD

Rheumatology Physician in Bay City, MI · enumerated 2005.

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

National Provider Identifier

1043295066

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Registry record

Entity type Individual (Type 1)

Name Dr. Algimantas P Maciulis

Credential MD

Sex Male

Practice address Bay City, MI, 48706

Phone (989) 894-6040

Fax (989) 892-3983

Enumeration date Dec 13, 2005

Last updated in NPPES Oct 7, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 4301056481 (MI) Secondary

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License AM056481 (MI) 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
2678097	Medicaid	MI	-
1100975472	Other	MI	BCR & BCN

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 Algimantas Maciulis?

The National Provider Identifier (NPI) for Algimantas Maciulis is 1043295066, a Type 1 (individual) record in the CMS NPPES registry.

Where does Algimantas Maciulis practice?

The practice location on file with NPPES is in Bay City, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Margarethe Maciulis Endocrinology, Diabetes & Metabolism Physician · Bay City, MI NPI 1689650103 Theresa Weaver Professional Counselor · Bay City, MI NPI 1255393401 Cynthia Hack Clinical Social Worker · Bay City, MI NPI 1255393153 Visiting Nurse Services of Michigan Durable Medical Equipment & Medical Supplies · Bay City, MI NPI 1770531451 Russell Struble Family Medicine Physician · Bay City, MI NPI 1154355477 Subbarao Chavali Cardiovascular Disease Physician · Bay City, MI NPI 1669490769 James Guigelaar Internal Medicine Physician · Bay City, MI NPI 1831105956 Sang Oh Obstetrics & Gynecology Physician · Bay City, MI NPI 1467468959

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-07.