Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John J Croke, MD

Dermatology Physician in Boston, MA · enumerated 2005.

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

National Provider Identifier

1013994649

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. John J Croke

Credential MD

Sex Male

Practice address 725 Albany St, Shapiro 8, Boston, MA, 02118

Phone (617) 638-7420

Fax (617) 638-7289

Enumeration date Dec 23, 2005

Last updated in NPPES May 20, 2014

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 59427 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
110056889A	Medicaid	MA	-

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 → Validate an NPI →

Frequently asked questions

Is NPI 1013994649 active?

Yes, as of the latest NPPES snapshot, NPI 1013994649 is active (record last updated 2014-05-20).

How do I verify John Croke's NPI record?

Cross-check NPI 1013994649 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-05-20.