DIANA KATSMAN MD
NPI 1306003132
Ophthalmology in Torrance, CA
About Diana Katsman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA KATSMAN MD (NPI 1306003132) is an individual ophthalmology provider in Torrance, California, licensed in California (A112485) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Diana Katsman Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Diana Katsman reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Long Beach, CA 90804
- Reassigned Medicare billing, California enrollment
- 36 clinicians in this Medicare group
Los Alamitos, CA 90720
- Reassigned Medicare billing, California enrollment
- 488 clinicians in this Medicare group
Santa Monica, CA 90404
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
West Hollywood, CA 90069
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Encino, CA 91436
- Reassigned Medicare billing, California enrollment
Encino, CA 91436
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 19
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90509 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TORRANCE, CA 90509
TORRANCE, CA 90509
TORRANCE, CA 90509
TORRANCE, CA 90509
TORRANCE, CA 90509
TORRANCE, CA 90509
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 Diana Katsman's NPI number?
The NPI number for Diana Katsman is 1306003132. It was assigned to this individual provider in the NPPES registry on May 20, 2008.
Where is Diana Katsman located?
Diana Katsman practices at 1000 West Carson Street, Torrance, CA 90509. The listed phone number is (310) 222-2409.
What is Diana Katsman's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Diana Katsman enrolled in Medicare?
Yes. Diana Katsman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Diana Katsman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Katsman reassigns Medicare benefits to 6 organizations: De La Pena Eye Clinic, A Medical Group, Inc. (Long Beach, CA), First Choice Physician Partners (Los Alamitos, CA), Santa Monica Medical Institute Inc (Santa Monica, CA), Arthur Benjamin, M.D. A Prof. Med. Corp (West Hollywood, CA), Diana Katsman MD Phd Inc (Encino, CA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Katsman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Diana Katsman was last updated on April 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.
# Diana Katsman, MD · NPI 1306003132
Ophthalmology physician in Torrance, California. Individual provider, active in the CMS NPPES registry since May 20, 2008.
## Identity
- **NPI:** 1306003132 (Entity type: Individual)
- **Enumerated:** May 20, 2008
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A112485 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1000 WEST CARSON STREET, Torrance, CA 90509
- **Phone:** (310) 222-2409
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): De La Pena Eye Clinic, A Medical Group, Inc. (NPI 1285412007, Long Beach, CA); First Choice Physician Partners (NPI 1427479203, Los Alamitos, CA); Santa Monica Medical Institute Inc (NPI 1538351283, Santa Monica, CA); Arthur Benjamin, M.D. A Prof. Med. Corp (NPI 1487843280, West Hollywood, CA); Diana Katsman MD Phd Inc (NPI 1740807080, Encino, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 2008
## Record status
- **NPPES last updated:** April 4, 2018
---
Source: [NPI Profile](https://npiprofile.com/npi/1306003132) · Data from the CMS NPPES public registry.