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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MERRILL M KNOPF M.D.
NPI 1841294733
Ophthalmology in Long Beach, CA

Active since June 08, 2005
1045 ATLANTIC AVE, STE 1007, LONG BEACH, CA 90813(562) 436-4558(562) 437-4558 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Merrill M Knopf M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MERRILL M KNOPF M.D. (NPI 1841294733) is an individual ophthalmology provider in Long Beach, California, licensed in California (G16139) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1841294733
Entity TypeIndividualMale
Primary Taxonomy207W00000X
Provider Legal NameMERRILL M KNOPFCredential: M.D.
Location Address1045 ATLANTIC AVE, STE 1007Long Beach, CA 90813-3413
Mailing Address1045 Atlantic Ave, Ste 1007Long Beach, CA 90813-3413 · (562) 436-4558 · Fax (562) 437-4558
Phone(562) 436-4558
Fax(562) 437-4558
Sole ProprietorNo
Enumeration DateJune 8, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1841294733 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
License✔ Licensed in CA · G16139
Definition
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.
1045 ATLANTIC AVE, Long Beach, CA 90813
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Other Identifiers 1

Medicaid00G161390CA

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NEUROMEDICAL DIAGNOSTIC MEDICAL GROUP
Psychiatry & Neurology (Neurology)
1045 ATLANTIC AVE, 719
LONG BEACH, CA 90813
Los Angeles County (562) 591-1324
ST MARYS RADIOLOGY MEDICAL GROUP
Specialist
1045 ATLANTIC AVE, SUITE 105
LONG BEACH, CA 90813
Los Angeles County (562) 437-3833
COREEN MARIE CORREA FNP
Nurse Practitioner (Family)
1045 ATLANTIC AVE, 508
LONG BEACH, CA 90813
Los Angeles County (562) 437-1882
DR. BERTRAM E SOHL M.D.
Specialist
1045 ATLANTIC AVE, SUITE 508
LONG BEACH, CA 90813
Los Angeles County (562) 437-1882
NEILL RAMOS M.D.
Internal Medicine
1045 ATLANTIC AVE, SUITE 708
LONG BEACH, CA 90813
Los Angeles County (562) 491-9045
CARDIOVASCULAR ASSOCIATES, A MEDICAL GROUP, INC.
Internal Medicine (Cardiovascular Disease)
1045 ATLANTIC AVE, SUITE 912
LONG BEACH, CA 90813
Los Angeles County (562) 437-2801
TERRANCE W DUSHENKO PHD
Psychologist
1045 ATLANTIC AVE, #806
LONG BEACH, CA 90813
Los Angeles County (562) 590-5594
DR. CHARLES FRANKLIN BROWN M.D.
Radiology (Diagnostic Radiology)
1045 ATLANTIC AVE, SUITE 105
LONG BEACH, CA 90813
Los Angeles County (562) 437-6982

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Merrill Knopf's NPI number?

The NPI number for Merrill Knopf is 1841294733. It was assigned to this individual provider in the NPPES registry on June 8, 2005.

Where is Merrill Knopf located?

Merrill Knopf practices at 1045 Atlantic Ave Ste 1007, Long Beach, CA 90813. The listed phone number is (562) 436-4558.

What is Merrill Knopf's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

When was this NPI record last updated?

The NPPES record for Merrill Knopf was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.