Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John F Zimmerman, M.D.

Internal Medicine Physician in Lewes, DE · enumerated 2006.

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

National Provider Identifier

1215974894

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Registry record

Entity type Individual (Type 1)

Name Dr. John F Zimmerman

Credential M.D.

Sex Male

Practice address 301 Ocean View Blvd, Lewes, DE, 19958

Phone (410) 548-2343

Fax (844) 332-3891

Enumeration date Jun 1, 2006

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D83821 (MD) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101233779 (VA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License C1-0012226 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
465493	Other	VA	ANTHEM
4478445	Other	VA	AETNA
325908	Other	VA	SOUTHERN HEALTH
1215974894	Medicaid	VA	-
1060654	Other	VA	CIGNA
110248478	Other	VA	RAILROAD MEDICARE

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

What is the NPI number for John Zimmerman?

The National Provider Identifier (NPI) for John Zimmerman is 1215974894, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Zimmerman practice?

The practice location on file with NPPES is in Lewes, DE. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Delaware Health Corporation Skilled Nursing Facility · Lewes, DE NPI 1366442667 Nicole Lee Family Nurse Practitioner · Lewes, DE NPI 1730302233 Jill Stewart Specialist · Lewes, DE NPI 1285076133 Stephanie Duarte Skilled Nursing Facility · Lewes, DE NPI 1346607207 Erica Drayton Occupational Therapy Assistant · Lewes, DE NPI 1023558665 Elisa Carlino Physical Therapy Assistant · Lewes, DE NPI 1558827501 Shannon Deck Occupational Therapist · Lewes, DE NPI 1205393774 Jason Peltz Physical Therapy Assistant · Lewes, DE NPI 1376000893

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.