Dr. Gregory J Faust, M.D.
Dr. Gregory J Faust is a Specialist provider (Specialist) practicing in Springfield, MA, registered in the NPPES registry with NPI 1164417929 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1164417929 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Gregory J Faust |
| Credential | M.D. |
| Sex | Male |
| Practice address | 3640 MAIN ST, SUITE 205, Springfield, MA, 01107 |
| Phone | 4137397367 |
| Fax | 4137372686 |
| Enumeration date | 2005-09-16 |
| Last updated in NPPES | 2014-05-23 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 174400000X | Specialist | Primary | 73286 | MA |
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 |
|---|---|---|---|
| 0115328 | Other | MA | AETNA GROUP NO. |
| 073286 | Other | MA | CONNECTICARE |
| 12304 | Other | MA | HEALTH NEW ENGLAND |
| 150662 | Other | MA | HARVARD PILGRIM |
| 180022615 | Other | MA | RAILROAD MEDICARE |
| 0404677003 | Other | MA | CIGNA |
| 073286 | Other | MA | TUFTS |
| J10344 | Other | MA | MA BLUE SHIELD |
| 010073286MA01 | Other | MA | CONNECTICUT BLUE SHIELD |
| 0804433 | Other | MA | UNITED HEALTH CARE |
| P1503588 | Other | MA | OXFORD HEALTH PLANS |
Copy-ready billing details
Provider: Gregory Faust, M.D. NPI: 1164417929 Taxonomy: 174400000X (Specialist) Address: 3640 MAIN ST, SUITE 205, Springfield, MA, 01107
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1508851411 | Mark Jackowitz | Individual | Specialist | Springfield, MA |
| 1396730172 | Philip Moraitis | Individual | Specialist | Springfield, MA |
| 1104811769 | Ronald Gailun | Individual | Ophthalmology Physician | Springfield, MA |
| 1689660284 | Brian Bredvik | Individual | Specialist | Springfield, MA |
| 1205822293 | David Agahigian | Individual | Ophthalmology Physician | Springfield, MA |
| 1821078296 | Donald Sonn | Individual | Urology Physician | Springfield, MA |
| 1801876271 | Raphael Delima | Individual | Urology Physician | Springfield, MA |
| 1598745978 | Kammille Oborne | Individual | Medical Physician Assistant | Springfield, MA |
Verify this record
Cross-check NPI 1164417929 against the authoritative CMS record: view Dr. Gregory J Faust 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
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-05-23.