Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Harold I. Rodman, M.D. & Joel M. Engelstein. M.D.

Ophthalmology Physician in Silver Spring, MD · enumerated 2006 · authorized official Elizabeth Bonny, Office Manager.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164594453

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Registry record

Entity type Organization (Type 2)

Legal business name Harold I. Rodman, M.D. & Joel M. Engelstein. M.D.

Practice address 8630 Fenton St, Suite 130, Silver Spring, MD, 20910

Phone (301) 588-1177

Fax (301) 589-5245

Enumeration date Nov 14, 2006

Last updated in NPPES Oct 22, 2007

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Elizabeth Bonny

Title Office Manager

Phone (301) 588-1177

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 → Validate an NPI →

Frequently asked questions

Who is the authorized official for Harold I. Rodman, M.D. & Joel M. Engelstein. M.D.?

NPPES lists Elizabeth Bonny (Office Manager) as the authorized official for this organization.

What is the NPI number for Harold I. Rodman, M.D. & Joel M. Engelstein. M.D.?

The NPI for Harold I. Rodman, M.D. & Joel M. Engelstein. M.D. is 1164594453, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-22.