Daniel A. Greenberg, DDS PC
Periodontists (Periodontics)
25 E Washington, Suite 2033
Chicago, IL 60602
Who else practices at this address →
Cook County includes primary care (3% of residents) and mental health (4% of residents) shortage areas. About shortage areas
At a glance
- In the NPI registry since
- 2006
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
- Periodontics primary
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 2 companies reported 3 payments worth $195 in total to this clinician.
| Coloplast Corp | $145 |
|---|---|
| Zimvie Inc. | $50.00 |
| Food and Beverage | $145 |
|---|---|
| Education | $50.00 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Zimvie Inc. Sep 16, 2025 | Education BELLATEK · Dental | $50.00 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.