NPPES file of Aug 9, 2026

Christos Theophanous, M.D.

Ophthalmology Physician · Palo Alto, CA

Christos Theophanous, M.D. is an ophthalmology physician with a practice address in Palo Alto, California, and NPI 1134582356, issued on Apr 4, 2016. Check the license (California A174037, 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
1134582356
Name
Christos Theophanous
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A174037 CA
Self-reported in NPPES; status is on the state search
Practice location
795 EL Camino Real, Palo Alto, CA 94301
Phone
(650) 853-2974
Enumerated
Apr 4, 2016
Record last updated
Sep 29, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20211004002520); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →

Also registered at 795 EL Camino Real

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

  1. Hamza AbbasiInternal Medicine Physician1821545484
  2. Arman Abdalkhani, MDOtolaryngology Physician1356536130
  3. Sara AbrahamsInternal Medicine Physician1952988354
  4. Nana Efua Adabie, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1437647732
  5. Amy Adams, M.D.Dermatology Physician1679643928
  6. William Adams, DPMFoot & Ankle Surgery Podiatrist1447487830

Verify Christos Theophanous in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A174037    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

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25% more Medicare Part D claims than the average ophthalmology physician in 2024

1,897 Medicare Part D claims for 455 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.

  1. Christos Theophanous1,897
  2. Specialty average1,518

Most prescribed

  1. Latanoprost508 claims
  2. Prednisolone Acetate333 claims
  3. Polymyxin B Sul-Trimethoprim243 claims
  4. Diclofenac Sodium123 claims
  5. Timolol Maleate96 claims
  6. Dorzolamide-Timolol88 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: $74.51

3 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. Christos Theophanous$74.51
  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. Sutter Bay Medical FoundationSan Mateo, CA

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

Christos Theophanous among 2,899 ophthalmology physician records in California

Christos Theophanous, 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 2016, is newer than 86% of them.

  • NPI issued2016 · 86% of these records are older, 12% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2016 · median 2001 among the 1,907 with a school on file
  • Record last updated2021 · 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 Palo Alto → Ophthalmology Physician nationwide →

The 8 ophthalmology physician records with the nearest ZIP codes

  1. James Ahn, M.D.Palo Alto, CA 943011902915028
  2. Annie Chan, MDPalo Alto, CA 943011346420221
  3. Susan Connolly, MDPalo Alto, CA 943011861501900
  4. Jocelyn Delcarmen, M.D.Palo Alto, CA 943011144322579
  5. Harvey Fishman, M.D.Palo Alto, CA 943011639166838
  6. Hyunjin Jane Kim, M.D.Palo Alto, CA 943011376765990
  7. Debbie Kuo, M.D.Palo Alto, CA 943011417222050
  8. Marc Levin, MDPalo Alto, CA 943011811123441

Common questions

What is Christos Theophanous, M.D.'s NPI number?

Christos Theophanous, M.D.'s National Provider Identifier (NPI) is 1134582356, issued on Apr 4, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Christos Theophanous, M.D. located?

The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2974. Providers update this record themselves, so call before visiting.

How can I verify Christos Theophanous, M.D.'s license?

NPPES lists California license number A174037, 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 Christos Theophanous, M.D. prescribe under Medicare Part D?

In 2024, Christos Theophanous, M.D. had 1,897 Medicare Part D claims for 455 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.