Michael S Kaplan, DO

Michael S Kaplan is a Internal Medicine Physician provider (Internal Medicine) practicing in Smithtown, NY, registered in the NPPES registry with NPI 1841298593 since 2005. The credential DO stands for Doctor of Osteopathic Medicine. Practices at Dr Michael Kaplan Do PC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1841298593
Entity type	Individual (Type 1)
Name	Michael S Kaplan
Credential	DO
Sex	Male
Practice address	329 E MAIN ST, BOX 9, Smithtown, NY, 11787
Phone	6313662333
Fax	6313661211
Enumeration date	2005-07-07
Last updated in NPPES	2007-07-26

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207R00000X	Internal Medicine Physician	Primary	208149	NY

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
01916605	Medicaid	NY	—

Copy-ready billing details

Provider: Michael Kaplan, DO
NPI: 1841298593
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: 329 E MAIN ST, BOX 9, Smithtown, NY, 11787

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1497854897	Jadie Shing-De Tolla	Individual	Dentist	Smithtown, NY
1912086000	Dr Michael Kaplan Do PC	Organization	Internal Medicine Physician	Smithtown, NY
1326198441	William Schwing	Individual	Prosthetic/Orthotic Supplier	Smithtown, NY
1336287051	Deborah Adams	Individual	General Practice Dentistry	Smithtown, NY
1720242514	Ilana Forchheimer	Individual	Ophthalmology Physician	Smithtown, NY

Verify this record

Cross-check NPI 1841298593 against the authoritative CMS record: view Michael S Kaplan 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 Michael Kaplan?

Michael Kaplan is registered in NPPES with the primary taxonomy of Internal Medicine Physician. 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 2007-07-26.