Dr. Douglas Klein, DDS

Dr. Douglas Klein is a General Practice Dentistry provider (Dentist) practicing in South Plainfield, NJ, registered in the NPPES registry with NPI 1356492821 since 2007. The credential DDS stands for Doctor of Dental Surgery. Practices at Harold Arlen MD PA (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1356492821
Entity type	Individual (Type 1)
Name	Dr. Douglas Klein
Credential	DDS
Sex	Male
Practice address	South Plainfield, NJ, 07080
Phone	9087576677
Fax	9087530584
Enumeration date	2007-01-13
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
1223G0001X	General Practice Dentistry	Primary	DI17132	NJ

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: Douglas Klein, DDS
NPI: 1356492821
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: South Plainfield, NJ, 07080

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1467513119	Jilma Dicarlo	Individual	Medical Specialty Clinic/Center	South Plainfield, NJ
1720277783	Harold Arlen MD PA	Organization	Specialist	South Plainfield, NJ

Verify this record

Cross-check NPI 1356492821 against the authoritative CMS record: view Dr. Douglas Klein 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 Douglas Klein?

Douglas Klein is registered in NPPES with the primary taxonomy of General Practice Dentistry. 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 2007-07-08.