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

John Andrew Marakas, M.D

Internal Medicine Physician in Youngstown, OH · enumerated 2006 · practices at Trumbull Mahoning Medical Group, Inc..

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

National Provider Identifier

1598799140

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Registry record

Entity type Individual (Type 1)

Name John Andrew Marakas

Credential M.D

Sex Male

Practice address Youngstown, OH, 44512

Phone (330) 726-3000

Fax (330) 726-2612

Enumeration date Jul 10, 2006

Last updated in NPPES Oct 31, 2007

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 35049381 (OH) 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
0630231	Medicaid	OH	-
341341025034	Other	OH	CARESOURCE
400884	Other	OH	UNITED HEALTHCARE
Q018474	Other	OH	HOMETOWN
000000243200	Other	OH	ANTHEM BC/BS
Z49381	Other	OH	SUMMACARE
78242	Other	OH	HEALTH ASSURANCE

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 John Marakas?

John Marakas is registered in NPPES with the primary taxonomy of Internal Medicine 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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Kruti Shah Endocrinology, Diabetes & Metabolism Physician · Boardman, OH NPI 1891751780 Paul Lesnoski Family Medicine Physician · Youngstown, OH NPI 1639109994 Scott Agnew Family Medicine Physician · Youngstown, OH NPI 1306876628 Louise Hayes Pediatrics Physician · Youngstown, OH NPI 1609800325 Trumbull Mahoning Medical Group, Inc. Internal Medicine Physician · Youngstown, OH NPI 1578757472 Sameera Rahman Family Medicine Physician · Boardman, OH NPI 1205067378 Nikki Moore Family Nurse Practitioner · Boardman, OH NPI 1043785512 Salam Picard Family Medicine Physician · Boardman, OH NPI 1366145732

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-31.