Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mieczyslaw J. Hetnal, M.D.

Psychiatry Physician in Modesto, CA · enumerated 2006.

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

National Provider Identifier

1841226149

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Registry record

Entity type Individual (Type 1)

Name Mieczyslaw J. Hetnal

Credential M.D.

Sex Male

Practice address 3425 Coffee Rd, Suite 2a, Modesto, CA, 95355

Phone (209) 524-9401

Enumeration date Jun 25, 2006

Last updated in NPPES Sep 3, 2013

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License A46601 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 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.

What specialty is Mieczyslaw Hetnal?

Mieczyslaw Hetnal is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Lynnette Tripp Psychiatric/Mental Health Nurse Practitioner · Modesto, CA NPI 1386672848 Marla Arata Marriage & Family Therapist · Modesto, CA NPI 1740381904 Michael Thomas Clinical Psychologist · Modesto, CA NPI 1609977875 Mark Litynsky Clinical Psychologist · Modesto, CA NPI 1205937489 John Jacisin Psychiatry Physician · Modesto, CA NPI 1942301114 Banu Brar Child & Adolescent Psychiatry Physician · Modesto, CA NPI 1952402141 Sandra Snyder Marriage & Family Therapist · Modesto, CA NPI 1396836342 Barry Olson Clinical Psychologist · Modesto, CA NPI 1639261134

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-03.