Mallorie Gretchen Gregg, DC
Chiropractor · Rockville, IN
Mallorie Gretchen Gregg, DC is a chiropractor with a practice address in Rockville, Indiana, and NPI 1447041611, issued on May 15, 2025. Check the license (Indiana 08003515A, as entered in NPPES) with the Indiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mallorie Gretchen Gregg
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- 08003515A IN
Self-reported in NPPES; status is on the state search - Practice location
- 393 W US Highway 36, Rockville, IN 47872
- Phone
- (765) 569-3440
- Enumerated
- May 15, 2025
- Record last updated
- Jun 23, 2026
- Fax
- (765) 569-3362
- Medicare enrollment
- Enrolled (PECOS I20250924003098); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 1,406 in Indiana → Look up another NPI →
Verify Mallorie Gretchen Gregg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Indiana board licenses this profession
Search for license 08003515ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Dr Larry J Russell IncCrawfordsville, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mallorie Gretchen Gregg among 1,406 chiropractor records in Indiana
Mallorie Gretchen Gregg, DC is one of 1,406 chiropractor records with a practice address in Indiana. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 96% of them.
- NPI issued2025 · 96% of these records are older, 1% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2025 · median 2007 among the 706 with a school on file
- Record last updated2026 · 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 111N00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 chiropractor records list a practice address in Rockville
They are 3 of the 47 NPPES records with a practice address in Rockville, and 1,406 chiropractor records in Indiana.
All 1,406 in Indiana → Every provider in Rockville → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Jon Ferguson, D.C.Rockville, IN 478721801965751
- Donna Smith, DCRockville, IN 478721528024437
- Ryan Bachman, DCSullivan, IN 478821710700265
- Brian Grindstaff, DCSullivan, IN 478821780717637
- Thomas Newbauer, D.C.Sullivan, IN 478821013903186
- Carson Sandy, DCSullivan, IN 478821770300188
- Sara Tripps, D.C.Sullivan, IN 478821114942141
- Sheila Harmon, DCJasper, IN 478461346254901
Common questions
What is Mallorie Gretchen Gregg, DC's NPI number?
Mallorie Gretchen Gregg, DC's National Provider Identifier (NPI) is 1447041611, issued on May 15, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Mallorie Gretchen Gregg, DC located?
The NPPES record lists a practice address at 393 W US Highway 36, Rockville, IN, 47872. Phone: (765) 569-3440. Providers update this record themselves, so call before visiting.
How can I verify Mallorie Gretchen Gregg, DC's license?
NPPES lists Indiana license number 08003515A, as entered by the provider. Search the Indiana board that licenses this profession; the NPPES record confirms identity 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.