Kelsi Leigh Greider-Sideris, M.D.
Ophthalmology Physician · Vista, CA
Kelsi Leigh Greider-Sideris, M.D. is an ophthalmology physician with a practice address in Vista, California, and NPI 1851771497, issued on Jun 8, 2015. Check the license (California A147131, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kelsi Leigh Greider-Sideris
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- A147131 CA
298489 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2067 W Vista Way Ste 120, Vista, CA 92083
- Phone
- (760) 758-2020
- Enumerated
- Jun 8, 2015
- Record last updated
- Dec 17, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (760) 758-1410
- Medicare enrollment
- Enrolled (PECOS I20191125000538); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Medicine And Surgery, 2015
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 2067 W Vista Way Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brandyn Chen, ODOptometrist1053096685
- Heather Chen, MDOphthalmology Physician1164881603
- Krista Gardner, ODOptometrist1336663681
- Benjamin Stephens, M.D.Ophthalmology Physician1043624448
- Ashley Tang, ODOptometrist1043798622
- Maulik Zaveri, M.D.Cornea and External Diseases Specialist Physician1780848937
Verify Kelsi Leigh Greider-Sideris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A147131Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average ophthalmology physician in 2024
2,238 Medicare Part D claims for 626 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 50% of claims.
Most prescribed
- Latanoprost477 claims
- Lumigan309 claims
- Timolol Maleate264 claims
- Erythromycin193 claims
- Dorzolamide-Timolol175 claims
- Prednisolone Acetate94 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 96.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $748.77
23 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bradley W Greider M D IncVista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kelsi Leigh Greider-Sideris among 2,899 ophthalmology physician records in California
Kelsi Leigh Greider-Sideris, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 84% of them.
- NPI issued2015 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2001 among the 1,907 with a school on file
- Record last updated2019 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Vista → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Heather Chen, MDVista, CA 920831164881603
- Steven Fish, MDVista, CA 920831760877120
- Iga Gray, MD, PHDVista, CA 920831033538350
- Bradley Greider, MDVista, CA 920831508979006
- Mark SoontornvachrinVista, CA 920831609987585
- Benjamin Stephens, M.D.Vista, CA 920831043624448
- Dan Yoon, M.D.Solana Beach, CA 920751033529748
- Natalie Afshari, M.D.La Jolla, CA 920931538126735
Common questions
What is Kelsi Leigh Greider-Sideris, M.D.'s NPI number?
Kelsi Leigh Greider-Sideris, M.D.'s National Provider Identifier (NPI) is 1851771497, issued on Jun 8, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Kelsi Leigh Greider-Sideris, M.D. located?
The NPPES record lists a practice address at 2067 W Vista Way Ste 120, Vista, CA, 92083. Phone: (760) 758-2020. Providers update this record themselves, so call before visiting.
How can I verify Kelsi Leigh Greider-Sideris, M.D.'s license?
NPPES lists California license number A147131, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kelsi Leigh Greider-Sideris, M.D. prescribe under Medicare Part D?
In 2024, Kelsi Leigh Greider-Sideris, M.D. had 2,238 Medicare Part D claims for 626 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Kelsi Leigh Greider-Sideris, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.