Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. WILLIAM JAMES GIESEN, M.D.
Active Sole ProprietorDR. WILLIAM JAMES GIESEN, M.D. is a Internal Medicine healthcare provider located in DARIEN, Connecticut. NPI 1124104724 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · DARIEN, CT
Registration Details
- NPI Number
- 1124104724
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Oct 27, 2006 (19.813472748697 yrs)
- Last Updated
- May 9, 2016
- License
-
CT023721 (CT)
- Sole Proprietor
- Yes
Practice Information
- Address
-
1500 POST RD.DARIEN, CT, 06820Browse CT providers · Browse ZIP 06820
- Phone
- 2036552516
- Fax
- 2036563665
- Primary Specialty
-
Internal Medicine
207R00000X
Other Internal Medicine Providers in DARIEN, CT
| Name | Credential | NPI |
|---|---|---|
| MARGARET BARAN | — | 1285623843 |
| DR. SUSAN M COLLINS | M.D. | 1306877626 |
| DR. CHARLES MINER III | M.D. | 1487689170 |
| PHILIP E NEGUS | M.D. | 1629003413 |
| DR. MARK DAM | M.D | 1720005507 |
| DR. AMANDA C COLLINS- BAINE | M.D. | 1154340040 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.