- Practice location
- 1535 Savannah RD, Lewes, DE 19958-1611
- Phone
- 302-645-3232
- Fax
- 302-645-3198
- Last updated
- February 9, 2026
William M Chasanov is an Internal Medicine, Infectious Disease based in Lewes, DE. William M Chasanov practices in Lewes, DE and has the professional credentials of DO. The NPI Number for William M Chasanov is 1104028919 and holds a License No. C7-0003733 (DE). The current practice location address for William M Chasanov is 1535 Savannah RD, Lewes, DE 19958-1611 and can be reached out via phone at 302-645-3232 and via fax at 302-645-3198.
Provider Profile Details
- NPI Number
- 1104028919
- Provider Name
- William M Chasanov
- Credential
- DO
- Provider Entity Type
- Individual
- Gender
- Male
- Address
- 1535 Savannah RD, Lewes, DE 19958-1611
- Phone Number
- 302-645-3232
- Fax Number
- 302-645-3198
- Primary Taxonomy
- Internal Medicine, Infectious Disease · 207RI0200X
- Sole Proprietor
- No
- Provider Enumeration Date
- June 4, 2007
- Last Update Date
- February 9, 2026
- Certification Date
- February 9, 2026
- NPI Status
- Active
Provider Business Practice Location Address Details
- Address
- 1535 Savannah RD
Lewes, DE 19958-1611 - City
- Lewes
- State
- Delaware
- Zip
- 19958-1611
- Phone Number
- 302-645-3232
- Fax Number
- 302-645-3198
Provider Business Mailing Address Details
- Address
- 1515 Savannah RD
Lewes, DE 19958-1675 - City
- Lewes
- State
- DE
- Zip
- 19958-1675
- Phone Number
- 302-645-3499
- Fax Number
- 302-644-4830
License Information
- License Number (1)
- C7-0003733
- License State (1)
- DE
- Taxonomy (1)
- Internal Medicine, Infectious Disease · 207RI0200X · Primary
- License Number (2)
- C7-0003773
- License State (2)
- DE
- Taxonomy (2)
- Internal Medicine · 207R00000X
- License Number (3)
- 25MB09331000
- License State (3)
- NJ
- Taxonomy (3)
- Internal Medicine, Infectious Disease · 207RI0200X
Legacy Identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| No legacy identifiers (Medicaid, Medicare or plan IDs) are on file for this provider. | |||
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Frequently Asked Questions
What is the NPI number of Dr. William M Chasanov II, DO?
The NPI number of Dr. William M Chasanov II, DO is 1104028919. It was assigned on June 4, 2007 and is currently active in the NPPES registry.
What is the specialty of Dr. William M Chasanov II, DO?
Dr. William M Chasanov II, DO is registered under the primary taxonomy Internal Medicine, Infectious Disease (code 207RI0200X), licensed in DE under license number C7-0003733.
Where does Dr. William M Chasanov II, DO practice?
The practice location is 1535 Savannah RD, Lewes, DE 19958-1611. The office can be reached at 302-645-3232 (phone) or 302-645-3198 (fax).
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). It is used in HIPAA standard transactions.
How do I verify this NPI record?
This record is sourced from the public NPPES NPI Registry maintained by CMS. You can confirm it by searching NPI 1104028919 directly on the NPPES registry website.