Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Grishman, D.D.S.

Dentist in Tigard, OR · enumerated 2006.

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

National Provider Identifier

1558385781

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Grishman

Credential D.D.S.

Sex Male

Practice address 7105 Sw Hampton St, Tigard, OR, 97223

Phone (503) 684-9274

Fax (503) 624-9610

Enumeration date Jul 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License D8253 (OR) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1558385781 active?

Yes, as of the latest NPPES snapshot, NPI 1558385781 is active (record last updated 2007-07-08).

How do I verify Michael Grishman's NPI record?

Cross-check NPI 1558385781 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Permanente Dental Associates, PC Health Maintenance Organization · Tigard, OR NPI 1669492500 James Hesla Dentist · Tigard, OR NPI 1891717237 Greg Bowers General Practice Dentistry · Tigard, OR NPI 1124040183 Julie Neuman Dental Hygienist · Tigard, OR NPI 1740299155 Daniel Pihlstrom General Practice Dentistry · Tigard, OR NPI 1891704557 Joan Traweek Dental Hygienist · Tigard, OR NPI 1851300222 Kathy Regan Dental Hygienist · Tigard, OR NPI 1508875766 Deborah Richter Dental Hygienist · Tigard, OR NPI 1215947080

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.