Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Morton L Glaser, MD
Specialist in Port Jefferson, NY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487657755
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Registry record
Entity type Individual (Type 1)
Name Dr. Morton L Glaser
Credential MD
Sex Male
Practice address 60 N Country Rd, Ste 203, Port Jefferson, NY, 11777
Phone (631) 509-1888
Fax (877) 434-7939
Enumeration date May 31, 2005
Last updated in NPPES Dec 6, 2013
Taxonomy & licenses
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 |
|---|---|---|---|
| 00653576 | Medicaid | NY | - |
| 50A65EC831 | Other | NY | MEDICARE OTHER PIN |
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.
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 Morton Glaser?
Morton Glaser is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Kenneth Sorkin Pediatric Optometrist · Port Jefferson, NY NPI 1518940279 Joan Rubinstein Psychiatry Physician · Port Jefferson, NY NPI 1780650341 Richard Koty Ophthalmology Physician · Port Jefferson, NY NPI 1003923038 Eric Roberts Ophthalmology Physician · Port Jefferson, NY NPI 1265549265 Maury Marmor Pediatric Ophthalmology and Strabismus Specialist Physician · Port Jefferson, NY NPI 1417064569 Dennis Dubey Clinical Child & Adolescent Psychologist · Port Jefferson, NY NPI 1497812564 Long Island Pediatric Ophthalmology & Strabismus, P.C. Ophthalmology Physician · Port Jefferson, NY NPI 1467589861 Sameh Wahba Psychiatry Physician · Port Jefferson, NY NPI 1154544567
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-06.