Theodore Roberts Grigg, D.M.D.
Endodontics · Saginaw, MI
Theodore Roberts Grigg, D.M.D. is an endodontics with a practice address in Saginaw, Michigan, and NPI 1063527695, issued on Aug 21, 2006. Check the license (Michigan 2901018520, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theodore Roberts Grigg
- Credential
- D.M.D.
- Primary taxonomy
- Endodontics 1223E0200X
- License number
- 2901018520 MI
Self-reported in NPPES; status is on the state search - Practice location
- 5481 Colony Dr N, Saginaw, MI 48638
- Phone
- (989) 791-3636
- Enumerated
- Aug 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (989) 792-4002
- Entity
- Type 1 · individual
8 nearest endodontics records → All 176 in Michigan → Look up another NPI →
Also registered at 5481 Colony Dr N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Davis, D.D.S.General Practice Dentistry1588874010
- Beverly Jarema, D.O.Family Medicine Physician1104834563
- Benjamin Lievense, BS, DDS.General Practice Dentistry1932755295
- Megan Lievense, RDHDental Hygienist1801782149
- Dana Newvine, NPNurse Practitioner1457990269
Verify Theodore Roberts Grigg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 2901018520Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average endodontics in 2024
65 Medicare Part D claims for 57 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin40 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Theodore Roberts Grigg among 176 endodontics records in Michigan
Theodore Roberts Grigg, D.M.D. is one of 176 endodontics records with a practice address in Michigan. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 63% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2007 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endodontics providers in Michigan
There are 176 endodontics records in Michigan.
All 176 in Michigan → Every provider in Saginaw → Endodontics nationwide →
The 8 endodontics records with the nearest ZIP codes
- Jeffrey Dwan, DDS MSSaginaw, MI 486381790881902
- John Galsterer, D.D.S.Saginaw, MI 486381518060326
- John Galsterer, D.M.D.Saginaw, MI 486381386735579
- Kenneth Grove, D.D.S.Midland, MI 486401447374335
- Michael Sulfaro, DDSBay City, MI 487081790908903
- Gail Woolhiser, DDSBay City, MI 487081407079619
- Kenneth Merckel, DDSMayville, MI 487441962514240
- David Dolan, DDS, MSFlint, MI 485071093877391
Common questions
What is Theodore Roberts Grigg, D.M.D.'s NPI number?
Theodore Roberts Grigg, D.M.D.'s National Provider Identifier (NPI) is 1063527695, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Roberts Grigg, D.M.D. located?
The NPPES record lists a practice address at 5481 Colony Dr N, Saginaw, MI, 48638. Phone: (989) 791-3636. Providers update this record themselves, so call before visiting.
How can I verify Theodore Roberts Grigg, D.M.D.'s license?
NPPES lists Michigan license number 2901018520, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Theodore Roberts Grigg, D.M.D. prescribe under Medicare Part D?
In 2024, Theodore Roberts Grigg, D.M.D. had 65 Medicare Part D claims for 57 beneficiaries; the average among endodontics prescribers was 121. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.