Dr. Peter B Markert, D.C.

Dr. Peter B Markert is a Chiropractor provider (Chiropractor) practicing in Holden, MA, registered in the NPPES registry with NPI 1639226368 since 2007. The credential DC stands for Doctor of Chiropractic. Practices at Holden Chiropractic, Inc. (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1639226368
Entity type	Individual (Type 1)
Name	Dr. Peter B Markert
Credential	D.C.
Sex	Male
Practice address	Holden, MA, 01520
Phone	5088292219
Fax	5088292219
Enumeration date	2007-01-04
Last updated in NPPES	2007-07-08

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	562	MA

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

Copy-ready billing details

Provider: Peter Markert, D.C.
NPI: 1639226368
Taxonomy: 111N00000X (Chiropractor)
Address: Holden, MA, 01520

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1083018733	Holden Chiropractic, Inc.	Organization	Chiropractor	Holden, MA

Verify this record

Cross-check NPI 1639226368 against the authoritative CMS record: view Dr. Peter B Markert 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

What specialty is Peter Markert?

Peter Markert 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.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.