Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Elvira Mikhailovna O'Brien, M.D.

Obstetrics & Gynecology Physician in Midland, MI · enumerated 2008.

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

National Provider Identifier

1255500674

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Registry record

Entity type Individual (Type 1)

Name Dr. Elvira Mikhailovna O'Brien

Credential M.D.

Sex Female

Practice address 4401 Campus Ridge Dr Ste Ll110, Midland, MI, 48640

Phone (989) 837-9400

Fax (989) 837-9410

Enumeration date Feb 29, 2008

Last updated in NPPES Mar 4, 2026

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License C206629 (CA) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 4301090219 (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
THP11576F	Medicaid	CA	-

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

What specialty is Elvira O'Brien?

Elvira O'Brien is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology 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.

Other providers at this practice address

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Andrew Wagner Obstetrics & Gynecology Physician · Midland, MI NPI 1194703793 Jeanine Pfundt Advanced Practice Midwife · Midland, MI NPI 1639235419 Ayodeji Joshua Obstetrics & Gynecology Physician · Midland, MI NPI 1568582443 Kelly Hamilton Obstetrics & Gynecology Physician · Midland, MI NPI 1033390646 Omosalewa Itauma Obstetrics & Gynecology Physician · Midland, MI NPI 1891922613 Sarah Sokolov Physician Assistant · Midland, MI NPI 1568720787 Tara Stockmeyer Clinical Social Worker · Midland, MI NPI 1427488527 Julayne Bullard Physician Assistant · Midland, MI NPI 1033638945

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-04.