Marki J Knox, M.D.
Obstetrics & Gynecology · Santa Monica, CA
At a glance
2121 Wilshire Blvd, Santa Monica, CA 90403-5720
Published activity: Removal of the uterus. View counts and coverage
NPPES record updated Aug 8, 2007. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
2121 Wilshire Blvd Suite 303Santa Monica, CA 90403-5720
Education & affiliations
- Medical / professional school
- University Of Washington School Of Medicine
- Graduation year
- 1979
- CMS specialties
- Obstetrics/Gynecology
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Reported hospital affiliations
- Cedars-Sinai Medical Center Los Angeles, CA
- Saint John's Health Center Santa Monica, CA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Removal of the uterus | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $154.16 |
Reporting companies
| Company | Amount |
|---|---|
| SMITH+NEPHEW, INC. | $52.86 |
| ASTELLAS PHARMA US INC | $33.50 |
| SUPERNUS PHARMACEUTICALS, INC. | $20.55 |
| SAGE THERAPEUTICS, LLC | $20.55 |
| EXACT SCIENCES CORPORATION | $16.61 |
| MAYNE PHARMA COMMERCIAL LLC | $10.09 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Obstetrics & Gynecology
- Taxonomy code
- 207V00000X
- Enumeration date
- Feb 6, 2007
- Record updated
- Aug 8, 2007
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207V00000X · Primary
License reported: G50150 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
2121 Wilshire BlvdSuite 303
Santa Monica, CA 90403-5720
- Phone
- (310) 264-1777
- Fax
- (310) 264-1787
Mailing address
2121 WILSHIRE BLVDSUITE 303
SANTA MONICA, CA 904035720
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue