Theodore Roberts Grigg, DMD
- Part D claims, 2024
- 65
- Industry payments
- $18
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 5481 Colony Dr N, Saginaw, MI 48638
- Practice phone
- Call (989) 792-8888
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Apex Endodontics
Physician office · Saginaw, Michigan
Find Theodore Grigg's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Theodore Roberts Grigg is an endodontist in Saginaw, Michigan
Theodore Grigg practices at Apex Endodontics in Saginaw, Michigan.
Theodore Grigg's NPI, 1063527695, was assigned on August 21, 2006. Theodore Grigg holds Michigan license 2901018520.
- NPI
- 1063527695NPI Registry (opens in a new tab)
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Practice phone
- (989) 792-8888
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Theodore Roberts Grigg practices at Apex Endodontics in Saginaw, Michigan
Theodore Grigg's primary practice is Apex Endodontics, at 5481 Colony Dr N, Saginaw, MI 48638. The practice phone is (989) 792-8888.
- Apex Endodontics5481 Colony Dr N, Saginaw, MI 48638Phone(989) 792-8888
Source: Dmand AI Affiliation Data
Theodore Roberts Grigg is affiliated with 1 site of care
Theodore Grigg's primary practice is Apex Endodontics in Saginaw, Michigan.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Theodore Roberts Grigg's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Theodore Grigg practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Apex Endodontics | Available with a free account |
Source: Dmand AI Technology Install Data
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Theodore Roberts Grigg is one of 92 endodontists in Michigan
Endodontics is Theodore Grigg's primary specialty in the NPI Registry, under taxonomy code 1223E0200X. Theodore Grigg is licensed in Michigan.
Specialties and state licenses
- Endodontist, MichiganPrimary
Endodontists near Theodore Grigg
Counts of endodontists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Theodore Roberts Grigg wrote 65 Medicare Part D claims in 2024
In 2024, Theodore Grigg wrote 65 Medicare Part D claims for 57 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Theodore Grigg's Part D claims, 2024
- Antibiotics89%58 of 65 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
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Theodore Roberts Grigg received $18 in industry payments in 2025
CMS Open Payments shows 1 general payment to Theodore Grigg from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Dentsply Sirona Inc paid the most, $18.
Companies that paid Theodore Grigg the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Theodore Roberts Grigg's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Theodore Roberts Grigg
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What is Theodore Roberts Grigg's NPI number?
Theodore Roberts Grigg's NPI number is 1063527695. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What does Theodore Roberts Grigg specialize in?
Theodore Roberts Grigg is an endodontist in Saginaw, Michigan. The primary specialty in the NPI Registry is Endodontist (taxonomy code 1223E0200X).
Where does Theodore Roberts Grigg practice?
Theodore Grigg practices at 5481 Colony Dr N, Saginaw, MI 48638. Theodore Grigg's primary practice is Apex Endodontics in Saginaw, Michigan.
What is Theodore Roberts Grigg's office phone number?
The practice phone on file for Theodore Grigg is (989) 792-8888.
What is Theodore Roberts Grigg's medical license number?
Theodore Grigg holds Michigan license 2901018520.
Has Theodore Roberts Grigg received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Theodore Grigg from 1 company from 2025 to 2025. The largest total came from Dentsply Sirona Inc.
How long has Theodore Roberts Grigg been practicing?
Theodore Grigg's NPI was assigned in 2006.
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