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John H Shackelford Jr., DO

Internal Medicine Physician in Harwich, MA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598724072

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Registry record

Entity type Individual (Type 1)
Name John H Shackelford Jr.
Credential DO
Sex Male
Practice address 1421 Orleans Rd, Harwich, MA, 02645
Phone (508) 778-4777
Fax (508) 771-9555
Enumeration date Mar 22, 2006
Last updated in NPPES Jun 17, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 220500 (MA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
2104296 Medicaid MA -
J28724 Other MA BCBS
AA35717 Other MA HPHC

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.

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Frequently asked questions

What is the NPI number for John Shackelford?
The National Provider Identifier (NPI) for John Shackelford is 1598724072, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Shackelford practice?
The practice location on file with NPPES is in Harwich, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-17.