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

Mrs. Marina Leybovna Polyak, DO

Hospitalist Physician in Troy, MI · enumerated 2008.

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

National Provider Identifier

1386821247

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Registry record

Entity type Individual (Type 1)
Name Mrs. Marina Leybovna Polyak
Credential DO
Sex Female
Practice address Troy, MI, 48085
Phone (248) 691-8646
Enumeration date Jan 23, 2008
Last updated in NPPES Apr 11, 2017

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0T012225 (PA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 05015179 (PA) Secondary
208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 5101019649 (MI) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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

Is NPI 1386821247 active?
Yes, as of the latest NPPES snapshot, NPI 1386821247 is active (record last updated 2017-04-11).
How do I verify Marina Polyak's NPI record?
Cross-check NPI 1386821247 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 2017-04-11.