NPPES file of Aug 9, 2026

Jonathan Caesar Chou, MD

Ophthalmology Physician · Palo Alto, CA

Jonathan Caesar Chou, MD is an ophthalmology physician with a practice address in Palo Alto, California, and NPI 1043621055, issued on May 13, 2014. Check the license (California A154817, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043621055
Name
Jonathan Caesar Chou
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
A154817 CA
262825 MA
Self-reported in NPPES; status is on the state search
Practice location
2452 Watson CT, Palo Alto, CA 94303
Phone
(650) 723-4000
Enumerated
May 13, 2014
Record last updated
Sep 20, 2023
Medicare enrollment
Enrolled (PECOS I20180529000584); accepts Medicare assignment
Medical or professional school
Northwestern University Feinberg Medical School, 2014
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2452 Watson CT

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alec BernardStudent in an Organized Health Care Education/Training Program1689317315
  2. Natalia Binczyk, MD, FRCSCOphthalmology Physician1013748359
  3. Emily Charlson, MDOphthalmology Physician1609296466
  4. Julie Cho, M.D, PH.DOphthalmology Physician1073993929
  5. Jonathan EntwisleCertified Registered Nurse Anesthetist1972934719
  6. Matthew Fitzgerald, PH.D.Audiologist1770930810

Verify Jonathan Caesar Chou in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A154817
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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1% fewer Medicare Part D claims than the average ophthalmology physician in 2024

1,502 Medicare Part D claims for 474 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Jonathan Chou1,502
  2. Specialty average1,518

Most prescribed

  1. Latanoprost566 claims
  2. Dorzolamide-Timolol244 claims
  3. Prednisolone Acetate157 claims
  4. Timolol Maleate131 claims
  5. Brimonidine Tartrate128 claims
  6. Ketorolac Tromethamine76 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.

Industry payments in 2024: $205.81

4 payments; by number, the most common kind was food and beverage; the largest payer was Sight Sciences, 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.

  1. Jonathan Chou$205.81
  2. Specialty average$4,535.02

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

  1. Permanente Medical Group IncSan Francisco, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jonathan Caesar Chou among 2,899 ophthalmology physician records in California

Jonathan Caesar Chou, MD 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 updated2023 · 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.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Natalia Binczyk, MD, FRCSCPalo Alto, CA 943031013748359
  2. Emily Charlson, MDPalo Alto, CA 943031609296466
  3. Julie Cho, M.D, PH.DPalo Alto, CA 943031073993929
  4. Laura Huang, M.D.Palo Alto, CA 943031043605116
  5. Kirandeep Kaur, MDPalo Alto, CA 943031366618290
  6. Kevin Ma, MDPalo Alto, CA 943031770014219
  7. Anna TothPalo Alto, CA 943031528577046
  8. Filippos Vingopoulos, MDPalo Alto, CA 943031023685781

Common questions

What is Jonathan Caesar Chou, MD's NPI number?

Jonathan Caesar Chou, MD's National Provider Identifier (NPI) is 1043621055, issued on May 13, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan Caesar Chou, MD located?

The NPPES record lists a practice address at 2452 Watson CT, Palo Alto, CA, 94303. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Jonathan Caesar Chou, MD's license?

NPPES lists California license number A154817, 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 Jonathan Caesar Chou, MD prescribe under Medicare Part D?

In 2024, Jonathan Caesar Chou, MD had 1,502 Medicare Part D claims for 474 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.