DR. KATIE LYNN TOPPING M.D.
NPI 1215203534
Ophthalmology in Stanford, CA
About Dr. Katie Lynn Topping M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KATIE LYNN TOPPING M.D. (NPI 1215203534) is an individual ophthalmology provider in Stanford, California, licensed in California (A143601) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS, is affiliated with Renown Regional Medical Center, and is a graduate of University Of North Dakota School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Dr. Katie Lynn Topping M.d. 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
5Medicare enrollment records show Katie Topping reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Reno, NV 89511
- Reassigned Medicare billing, Nevada enrollment
- Medicare enrollment name: Marcus J Ko MD PLLC
- 3 clinicians in this Medicare group
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Palmdale, CA 93551
- Reassigned Medicare billing, California enrollment
- 2,584 clinicians in this Medicare group
Coronado, CA 92118
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
Chula Vista, CA 91910
- Reassigned Medicare billing, California enrollment
- 14 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Renown Regional Medical Center
Acute Care Hospitals · Reno, NVCarson Valley Health
Critical Access Hospitals · Gardnerville, NVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94305 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Katie Topping's NPI number?
The NPI number for Katie Topping is 1215203534. It was assigned to this individual provider in the NPPES registry on March 30, 2012. The provider is also known as Katie Lynn Wetsch M.D..
Where is Katie Topping located?
Katie Topping practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Katie Topping's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Katie Topping enrolled in Medicare?
Yes. Katie Topping 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 Katie Topping's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katie Topping reassigns Medicare benefits to 5 organizations: Marcus J. Ko, M.D., PLLC (Reno, NV), Southern California Permanente Medical Group (Oxnard, CA), Faculty Physicians And Surgeons Of Llusm (Palmdale, CA), Island Eye Specialists, Apc (Coronado, CA) and Eye Physicians Medical Surgical Center (Chula Vista, CA). 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 Katie Topping's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Katie Topping affiliated with any hospitals?
According to CMS data, Katie Topping is affiliated with Renown Regional Medical Center and Carson Valley Health.
When was this NPI record last updated?
The NPPES record for Katie Topping was last updated on March 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Dr. Katie Lynn Topping, M.D. · NPI 1215203534
Ophthalmology physician in Stanford, California. Individual provider, active in the CMS NPPES registry since March 30, 2012.
## Identity
- **NPI:** 1215203534 (Entity type: Individual)
- **Enumerated:** March 30, 2012
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A143601 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Marcus J. Ko, M.D., PLLC (NPI 1730505736, Reno, NV); Southern California Permanente Medical Group (NPI 1275756652, Oxnard, CA); Faculty Physicians And Surgeons Of Llusm (NPI 1679754634, Palmdale, CA); Island Eye Specialists, Apc (NPI 1154008027, Coronado, CA); Eye Physicians Medical Surgical Center (NPI 1538135694, Chula Vista, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of North Dakota School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** March 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1215203534) · Data from the CMS NPPES public registry.