1. Home
  2. Directory
  3. Michigan
  4. Saginaw
  5. Dentist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GREGORY STEPHEN HERZLER D.D.S.
NPI 1235120064
Dentist - General Practice in Saginaw, MI

Active since November 01, 2005
4977 MACKINAW RD, SAGINAW, MI 48603(989) 793-7733(989) 793-6347 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Gregory Stephen Herzler D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY STEPHEN HERZLER D.D.S. (NPI 1235120064) is an individual general practice provider in Saginaw, Michigan, licensed in Michigan (12605) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1235120064
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. GREGORY STEPHEN HERZLERCredential: D.D.S.
Location Address4977 MACKINAW RDSaginaw, MI 48603-7248
Mailing Address971 Canterbury DrSaginaw, MI 48638-5861 · (989) 793-2204
Phone(989) 793-7733
Fax(989) 793-6347
Sole ProprietorNo
Enumeration DateNovember 1, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1235120064 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in MI · 12605
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
4977 MACKINAW RD, Saginaw, MI 48603
Open in Google Maps ↗

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Herzler's NPI number?

The NPI number for Gregory Herzler is 1235120064. It was assigned to this individual provider in the NPPES registry on November 1, 2005.

Where is Gregory Herzler located?

Gregory Herzler practices at 4977 Mackinaw Rd, Saginaw, MI 48603. The listed phone number is (989) 793-7733.

What is Gregory Herzler's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for Gregory Herzler was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.