Cristy Ku, M.D., PH.D.
Ophthalmology Physician · Sacramento, CA
Cristy Ku, M.D., PH.D. is an ophthalmology physician with a practice address in Sacramento, California, and NPI 1235592361, issued on Apr 5, 2016. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cristy Ku
- Credential
- M.D., PH.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- Practice location
- 4860 Y St Ste 2400, Sacramento, CA 95817
- Phone
- (503) 494-8386
- Enumerated
- Apr 5, 2016
- Entity
- Type 1 · individual
Also registered at 4860 Y St Ste 2400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aparna Ajjarapu, MDStudent in an Organized Health Care Education/Training Program1962253070
- James Brandt, M.D.Ophthalmology Physician1578544136
- Evan Chang, MDOphthalmology Physician1457856759
- Nicholas Chartrand, MDStudent in an Organized Health Care Education/Training Program1912712696
- Andrew ChenStudent in an Organized Health Care Education/Training Program1023694981
- David Chu, MDOphthalmology Physician1427190578
Verify Cristy Ku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
90% fewer Medicare Part D claims than the average ophthalmology physician in 2024
147 Medicare Part D claims for 40 beneficiaries, against an average of 1,490 among the 16,109 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.
Most prescribed
- Prednisolone Acetate41 claims
- Moxifloxacin20 claims
- Ketorolac Tromethamine18 claims
- Atropine Sulfate15 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 Medicare quality score for 2023: 84.1 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: $396.01
7 payments, mostly food and beverage; the largest payer was Spark Therapeutics, Inc.. The 12,922 providers of this specialty with any payment received $4,937.17 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.
2 hospital and facility affiliations
- Baylor College OF MedicineHouston, TX
- Baylor College OF MedicineHouston, TX
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ophthalmology Physician providers in California
There are 2,888 ophthalmology physician records in California.
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Thomas Ableman, M.D.San Diego, CA1558415067
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Cristy Ku, M.D., PH.D.'s NPI number?
Cristy Ku, M.D., PH.D.'s National Provider Identifier (NPI) is 1235592361, issued on Apr 5, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Cristy Ku, M.D., PH.D. located?
The NPPES record lists a practice address at 4860 Y St Ste 2400, Sacramento, CA, 95817. Phone: (503) 494-8386. Providers update this record themselves, so call before visiting.
How can I verify Cristy Ku, M.D., PH.D.'s license?
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 Cristy Ku, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Cristy Ku, M.D., PH.D. had 147 Medicare Part D claims for 40 beneficiaries; the average among ophthalmology physician prescribers was 1,490. Part D covers Medicare prescriptions only.
What is Cristy Ku, M.D., PH.D.'s Medicare quality score?
The 2023 MIPS final score is 84.1 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.