Mark Boyd Groff, D.C.

Mark Boyd Groff is a Chiropractor provider (Chiropractor) practicing in Gallatin, TN, registered in the NPPES registry with NPI 1336233683 since 2006. The credential DC stands for Doctor of Chiropractic.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1336233683
Entity type	Individual (Type 1)
Name	Mark Boyd Groff
Credential	D.C.
Sex	Male
Practice address	Gallatin, TN, 37066
Phone	6154513400
Fax	6154513544
Enumeration date	2006-10-03
Last updated in NPPES	2018-07-25

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
111N00000X	Chiropractor	Primary	DC1343	TN

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
2052943	Other	TN	AETNA
5651996	Other	TN	CIGNA
3092896	Other	TN	BCBS OF TN
44-40329	Other	TN	UHC

Copy-ready billing details

Provider: Mark Groff, D.C.
NPI: 1336233683
Taxonomy: 111N00000X (Chiropractor)
Address: Gallatin, TN, 37066

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1225534514	Gallatin Chiropractic Clinic	Organization	Chiropractor	Gallatin, TN
1346877990	Gallatin Chiropractic Clinic LLC	Organization	Chiropractor	Gallatin, TN

Verify this record

Cross-check NPI 1336233683 against the authoritative CMS record: view Mark Boyd Groff on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Groff?

Mark Groff is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2018-07-25.