Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Constantine N Petrochko, MD

Diagnostic Radiology Physician in Greenville, PA · enumerated 2006.

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

National Provider Identifier

1881668440

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Registry record

Entity type Individual (Type 1)

Name Constantine N Petrochko

Credential MD

Sex Male

Practice address 110 N Main St, Greenville, PA, 16125

Phone (724) 588-2100

Enumeration date Feb 13, 2006

Last updated in NPPES Jul 18, 2007

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD052081L (PA) 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
0015251910001	Medicaid	PA	-
0381466	Medicaid	OH	-
000000114390	Other	OH	BC BS
0690975	Other	PA	BC BS

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 specialty is Constantine Petrochko?

Constantine Petrochko is registered in NPPES with the primary taxonomy of Diagnostic Radiology 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-18.