Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. James R. Stelling, M.D.
Specialist in Commack, NY · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1427034933
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Registry record
Entity type Individual (Type 1)
Name Dr. James R. Stelling
Credential M.D.
Sex Male
Practice address 500 Commack Rd Unit 202, Commack, NY, 11725
Phone (631) 638-4600
Fax (631) 638-4601
Enumeration date Dec 16, 2005
Last updated in NPPES Mar 29, 2019
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
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
Where does James Stelling practice?
The practice location on file with NPPES is in Commack, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for James Stelling?
The National Provider Identifier (NPI) for James Stelling is 1427034933, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Avner Hershlag Reproductive Endocrinology Physician · Commack, NY NPI 1518027663 Susan Marfoglio Nurse Practitioner · Commack, NY NPI 1437371374 Lauren Safier Reproductive Endocrinology Physician · Commack, NY NPI 1134445919 Chantae Sullivan-Pyke Reproductive Endocrinology Physician · Commack, NY NPI 1053601971 Eileen Corrado Women's Health Nurse Practitioner · Commack, NY NPI 1932971728
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-29.