Aaron Greenspan, M.D.
Aaron Greenspan, M.D. is a healthcare organization registered as Family Medicine Physician in Chicago, IL, holding Type 2 (organization) NPI 1699897199 since 2007. The authorized official on file is Aaron Greenspan, Medical Director.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1699897199 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Aaron Greenspan, M.D. |
| Practice address | 850 W IRVING PARK RD, Chicago, IL, 60613 |
| Phone | 7735256780 |
| Enumeration date | 2007-04-04 |
| Last updated in NPPES | 2008-12-02 |
Authorized official
| Name | Aaron Greenspan |
|---|---|
| Title | Medical Director |
| Phone | 8478975995 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207Q00000X | Family Medicine Physician | Primary | 036101234 | IL |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 036101234 | Medicaid | IL | — |
Copy-ready billing details
Provider: Aaron Greenspan, M.D. NPI: 1699897199 Taxonomy: 207Q00000X (Family Medicine Physician) Address: 850 W IRVING PARK RD, Chicago, IL, 60613
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1033193883 | Amy Allegretti | Individual | Emergency Medicine Physician | Chicago, IL |
| 1184677643 | Monique A Anawis MD PC | Organization | Ophthalmology Physician | Chicago, IL |
| 1932154614 | Quality Cancer Treatment | Organization | Therapeutic Radiology Physician | Chicago, IL |
| 1982643961 | Thorek Memorial Hospital | Organization | General Acute Care Hospital | Chicago, IL |
| 1881619286 | Richard Urgo | Individual | Emergency Medicine Physician | Chicago, IL |
| 1083639405 | Brinda Krishnan | Individual | Emergency Medicine Physician | Chicago, IL |
| 1225053655 | Barbara Monroe | Individual | Emergency Medicine Physician | Chicago, IL |
| 1467479097 | Steven Press | Individual | Emergency Medicine Physician | Chicago, IL |
Verify this record
Cross-check NPI 1699897199 against the authoritative CMS record: view Aaron Greenspan, M.D. 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
What type of organization is Aaron Greenspan, M.D.?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-12-02.