Dr. William L Diehl, MD
Surgery, Surgical Oncology in Livingston, New Jersey
1629068457- Practice location
- 75 E Northfield RD, Livingston, NJ 07039-4532
- Phone
- 973-436-1530
- Fax
- 973-422-0414
- Last updated
- February 16, 2026
William L Diehl is a Surgery, Surgical Oncology based in Livingston, NJ. William L Diehl practices in Livingston, NJ and has the professional credentials of MD. The NPI Number for William L Diehl is 1629068457 and holds a License No. 25MA04355800 (NJ). The current practice location address for William L Diehl is 75 E Northfield RD, Livingston, NJ 07039-4532 and can be reached out via phone at 973-436-1530 and via fax at 973-422-0414.
Provider Profile Details
- NPI Number
- 1629068457
- Provider Name
- William L Diehl
- Credential
- MD
- Provider Entity Type
- Individual
- Gender
- Male
- Address
- 75 E Northfield RD, Livingston, NJ 07039-4532
- Phone Number
- 973-436-1530
- Fax Number
- 973-422-0414
- Primary Taxonomy
- Surgery, Surgical Oncology · 2086X0206X
- Sole Proprietor
- No
- Provider Enumeration Date
- October 24, 2005
- Last Update Date
- February 16, 2026
- Certification Date
- February 16, 2026
- NPI Status
- Active
Provider Business Practice Location Address Details
- Address
- 75 E Northfield RD
Livingston, NJ 07039-4532 - City
- Livingston
- State
- New Jersey
- Zip
- 07039-4532
- Phone Number
- 973-436-1530
- Fax Number
- 973-422-0414
Provider Business Mailing Address Details
- Address
- 261 James St
Suite 2G
Morristown, NJ 07960-6392 - City
- Morristown
- State
- NJ
- Zip
- 07960-6392
- Phone Number
- 973-267-6400
- Fax Number
- 973-267-7295
License Information
- License Number (1)
- 25MA04355800
- License State (1)
- NJ
- Taxonomy (1)
- Surgery, Surgical Oncology · 2086X0206X · Primary
- License Number (2)
- 25MA04355800
- License State (2)
- NJ
- Taxonomy (2)
- Surgery · 208600000X
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 L Diehl, MD?
The NPI number of Dr. William L Diehl, MD is 1629068457. It was assigned on October 24, 2005 and is currently active in the NPPES registry.
What is the specialty of Dr. William L Diehl, MD?
Dr. William L Diehl, MD is registered under the primary taxonomy Surgery, Surgical Oncology (code 2086X0206X), licensed in NJ under license number 25MA04355800.
Where does Dr. William L Diehl, MD practice?
The practice location is 75 E Northfield RD, Livingston, NJ 07039-4532. The office can be reached at 973-436-1530 (phone) or 973-422-0414 (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 1629068457 directly on the NPPES registry website.