NPPES file of Aug 9, 2026

Timothy Chryssikos, MD

Neurological Surgery Physician · San Francisco, CA

Timothy Chryssikos, MD is a neurological surgery physician with a practice address in San Francisco, California, and NPI 1841673332, issued on Jul 2, 2015. Check the license (California A175606, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1841673332
Name
Timothy Chryssikos
Credential
MD
Primary taxonomy
Neurological Surgery Physician 207T00000X
License number
A175606 CA
Self-reported in NPPES; status is on the state search
Practice location
400 Parnassus Ave # A303, San Francisco, CA 94143
Phone
(415) 353-2739
Enumerated
Jul 2, 2015
Record last updated
Jun 30, 2022
Medicare enrollment
Enrolled (PECOS I20230918000502); accepts Medicare assignment
Medical or professional school
University Of Maryland School Of Medicine, 2015
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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Also registered at 400 Parnassus Ave # A303

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

  1. Tej Azad, MDNeurological Surgery Physician1447711205
  2. John Burke, MDNeurological Surgery Physician1235519935
  3. Nathan Han, MDNeurological Surgery Physician1417484569
  4. Jay Kumar, MDNeurological Surgery Physician1558850503
  5. Vignessh Kumar, MDNeurological Surgery Physician1649730359
  6. Gregory Kuzmik, MDNeurological Surgery Physician1922444371

Verify Timothy Chryssikos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A175606
    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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The practice group's MIPS final score for 2023 (Medicare payment program): 100 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.

  1. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $13,350.91

37 payments; by number, the most common kind was food and beverage; the largest payer was BK Medical Holding Company Inc. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Timothy Chryssikos$13,351
  2. Specialty average$14,926

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Shock Trauma Associates PABaltimore, MD
  2. University OF Maryland Neurosurgery Associates P ABaltimore, MD

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

Timothy Chryssikos among 929 neurological surgery physician records in California

Timothy Chryssikos, MD is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.

  • NPI issued2015 · 80% of these records are older, 15% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2015 · median 2005 among the 612 with a school on file
  • Record last updated2022 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurological Surgery Physician providers in California

There are 929 neurological surgery physician records in California.

The 8 neurological surgery physician records with the nearest ZIP codes

  1. Manish Aghi, MD PHDSan Francisco, CA 941431689647778
  2. Christopher Ames, MDSan Francisco, CA 941431265485155
  3. Mitchel Berger, MDSan Francisco, CA 941431538117981
  4. Nicholas Butowski, MDSan Francisco, CA 941431184681009
  5. Susan Chang, MDSan Francisco, CA 941431346299518
  6. Nalin Gupta, MDSan Francisco, CA 941431811955438
  7. Evren Keles, M.D.San Francisco, CA 941431407872674
  8. Praveen Mummaneni, M.D.San Francisco, CA 941431407960099

Common questions

What is Timothy Chryssikos, MD's NPI number?

Timothy Chryssikos, MD's National Provider Identifier (NPI) is 1841673332, issued on Jul 2, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Timothy Chryssikos, MD located?

The NPPES record lists a practice address at 400 Parnassus Ave # A303, San Francisco, CA, 94143. Phone: (415) 353-2739. Providers update this record themselves, so call before visiting.

How can I verify Timothy Chryssikos, MD's license?

NPPES lists California license number A175606, 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.

What is Timothy Chryssikos, MD's MIPS final score?

The 2023 MIPS final score is 100 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.