Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. David Thomas Greco, M.D.
Neurology Physician in Danbury, CT · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1740285204
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Registry record
Entity type Individual (Type 1)
Name Dr. David Thomas Greco
Credential M.D.
Sex Male
Practice address 69 Sand Pit Rd, Ste 300, Danbury, CT, 06810
Phone (203) 748-2551
Fax (203) 790-6375
Enumeration date Jun 20, 2005
Last updated in NPPES Jul 8, 2007
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 |
|---|---|---|---|
| 010040535CT01 | Other | CT | ANTHEM |
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
What is the NPI number for David Greco?
The National Provider Identifier (NPI) for David Greco is 1740285204, a Type 1 (individual) record in the CMS NPPES registry.
Where does David Greco practice?
The practice location on file with NPPES is in Danbury, CT. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Neil Culligan Neurology Physician · Danbury, CT NPI 1649275611 Jan Mashman Neurology Physician · Danbury, CT NPI 1639174618 Samuel Markind Neurology Physician · Danbury, CT NPI 1427053404 Diane Wirz Neurology Physician · Danbury, CT NPI 1922003805 John Murphy Neuromusculoskeletal Medicine & OMM Physician · Danbury, CT NPI 1508861279 Ralph Falkenstein Ophthalmology Physician · Danbury, CT NPI 1730187485 Margaret Marcone Optometrist · Danbury, CT NPI 1427056969 Bruce Altman Glaucoma Specialist (Ophthalmology) Physician · Danbury, CT NPI 1336147784
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.