Robert J. Peralta, M.D.
Ophthalmology Physician · Oakland, CA
Robert J. Peralta, M.D. is an ophthalmology physician with a practice address in Oakland, California, and NPI 1588869143, issued on Jun 15, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert J. Peralta
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 35.095215 OH
01068178A IN
TP122 KY
242440 NY
Self-reported in NPPES; status is on the state search - Practice location
- 491 30TH St, Oakland, CA 94609
- Phone
- (510) 763-0881
- Enumerated
- Jun 15, 2007
- Record last updated
- Feb 11, 2022
- Fax
- (510) 763-0907
- Medicare enrollment
- Enrolled (PECOS I20120921000225); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 491 30TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia Chiu, M.D.Ophthalmology Physician1306852629
- Christopher Dickens, M.D.Ophthalmology Physician1962560326
- Melanie Hom, M.D.Ophthalmology Physician1508944562
- Erich Horn, MDOphthalmology Physician1932205275
- Susan Link, ODOptometrist1942361712
- Timothy Sanders, ODOptometrist1235115718
Verify Robert J. Peralta 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
86% fewer Medicare Part D claims than the average ophthalmology physician in 2024
207 Medicare Part D claims for 111 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 21 claims were for opioids.
Most prescribed
- Erythromycin71 claims
- Acetaminophen-Codeine16 claims
- Amoxicillin-Clavulanate Potass16 claims
- Neomycin-Polymyxin-Dexameth16 claims
- Latanoprost15 claims
- Lorazepam12 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert J. Peralta among 2,899 ophthalmology physician records in California
Robert J. Peralta, 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 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2005 · median 2001 among the 1,907 with a school on file
- Record last updated2022 · 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 Oakland → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- John Alden, MDOakland, CA 946091013986868
- Daniel Brinton, M.D.Oakland, CA 946091114919495
- Cynthia Chiu, M.D.Oakland, CA 946091306852629
- Christopher Dickens, M.D.Oakland, CA 946091962560326
- Melanie Hom, M.D.Oakland, CA 946091508944562
- Erich Horn, MDOakland, CA 946091932205275
- Ernest Langham, MDOakland, CA 946091659472827
- Soon Lee, M.D.Oakland, CA 946091952394553
Common questions
What is Robert J. Peralta, M.D.'s NPI number?
Robert J. Peralta, M.D.'s National Provider Identifier (NPI) is 1588869143, issued on Jun 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert J. Peralta, M.D. located?
The NPPES record lists a practice address at 491 30TH St, Oakland, CA, 94609. Phone: (510) 763-0881. Providers update this record themselves, so call before visiting.
How can I verify Robert J. Peralta, M.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 Robert J. Peralta, M.D. prescribe under Medicare Part D?
In 2024, Robert J. Peralta, M.D. had 207 Medicare Part D claims for 111 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
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.