Giovanni Henry St. Orville Greaves, M.D.
Ophthalmology Physician · Los Angeles, CA
Giovanni Henry St. Orville Greaves, M.D. is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1700206844, issued on Apr 16, 2014. Check the license (California A156664, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Giovanni Henry St. Orville Greaves
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A156664 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Stein Plaza 1-340, Los Angeles, CA 90095
- Phone
- (310) 825-5000
- Enumerated
- Apr 16, 2014
- Record last updated
- Aug 9, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180726001160); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2014
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 200 Stein Plaza 1-340
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Laura Robbins, O.D.Ophthalmology Physician1508111709
- Aleksandr Yelenskiy, M.D.Ophthalmology Physician1578981395
- Victoria Yom, MDOphthalmology Physician1194088401
Verify Giovanni Henry St. Orville Greaves in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A156664Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average ophthalmology physician in 2024
2,262 Medicare Part D claims for 592 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Latanoprost663 claims
- Prednisolone Acetate293 claims
- Ketorolac Tromethamine267 claims
- Moxifloxacin206 claims
- Dorzolamide-Timolol154 claims
- Restasis133 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): 76.3 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).
Bills Medicare through one group practice
- Pih Health PhysiciansLa Habra, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Giovanni Henry St. Orville Greaves among 2,899 ophthalmology physician records in California
Giovanni Henry St. Orville Greaves, 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 2014, is newer than 82% of them.
- NPI issued2014 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2001 among the 1,907 with a school on file
- Record last updated2018 · 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 Los Angeles → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Reginald Ariyasu, MDLos Angeles, CA 900951285654939
- Anthony Arnold, MDLos Angeles, CA 900951629098314
- William Astle, MDLos Angeles, CA 900951700808276
- John Bartlett, MDLos Angeles, CA 900951144242611
- Katherine Bergwerk, MDLos Angeles, CA 900951952323941
- Joseph Caprioli, MDLos Angeles, CA 900951417979584
- Sophie Deng, M.D.Los Angeles, CA 900951194775890
- Michael Gorin, MDLos Angeles, CA 900951578536462
Common questions
What is Giovanni Henry St. Orville Greaves, M.D.'s NPI number?
Giovanni Henry St. Orville Greaves, M.D.'s National Provider Identifier (NPI) is 1700206844, issued on Apr 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Giovanni Henry St. Orville Greaves, M.D. located?
The NPPES record lists a practice address at 200 Stein Plaza 1-340, Los Angeles, CA, 90095. Phone: (310) 825-5000. Providers update this record themselves, so call before visiting.
How can I verify Giovanni Henry St. Orville Greaves, M.D.'s license?
NPPES lists California license number A156664, 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 Giovanni Henry St. Orville Greaves, M.D. prescribe under Medicare Part D?
In 2024, Giovanni Henry St. Orville Greaves, M.D. had 2,262 Medicare Part D claims for 592 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Giovanni Henry St. Orville Greaves, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.3 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.