NPPES file of Aug 9, 2026

Christopher Nicholas Tymchuk, MD

Infectious Disease Physician · Los Angeles, CA

Christopher Nicholas Tymchuk, MD is an infectious disease physician with a practice address in Los Angeles, California, and NPI 1104118561, issued on May 4, 2011. Check the license (California A96133, 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
1104118561
Name
Christopher Nicholas Tymchuk
Credential
MD
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
A96133 CA
Self-reported in NPPES; status is on the state search
Practice location
757 Westwood Plz Ste 7501, Los Angeles, CA 90095
Phone
(310) 267-9643
Enumerated
May 4, 2011
Record last updated
Apr 23, 2024
Medicaid ID
1104118561 CA
Medicare enrollment
Enrolled (PECOS I20110610000670); 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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Also registered at 757 Westwood Plz Ste 7501

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

  1. Bardia Adibmoradi, M.D.Hospitalist Physician1578267209
  2. Nawal Ahmed, DOHospitalist Physician1669092623
  3. Olumuyiwa Akinrimisi, MDStudent in an Organized Health Care Education/Training Program1730716614
  4. Saleem Alameh, MDInternal Medicine Physician1902591860
  5. Mesrop Aleksanyan, MDHospitalist Physician1629712427
  6. Mohammad Alghussein, M.DHospitalist Physician1255780185

Verify Christopher Nicholas Tymchuk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A96133
    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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54% fewer Medicare Part D claims than the average infectious disease physician in 2024

316 Medicare Part D claims for 84 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.

  1. Christopher Tymchuk316
  2. Specialty average689

Most prescribed

  1. Doxycycline Hyclate26 claims
  2. Amoxicillin17 claims
  3. Doxycycline Monohydrate16 claims
  4. Cefadroxil15 claims
  5. Penicillin V Potassium13 claims
  6. Amoxicillin-Clavulanate Potass11 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 MIPS final score for 2023 (Medicare payment program): 87.1 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score95.7
  2. Costout of 100 · 30%81.6
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Bills Medicare through one group practice

  1. The Regents OF The University OF CaliforniaSanta Monica, CA

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

Christopher Nicholas Tymchuk among 1,119 infectious disease physician records in California

Christopher Nicholas Tymchuk, MD is one of 1,119 infectious disease 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 2011, is newer than 72% of them.

  • NPI issued2011 · 72% of these records are older, 26% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2004 · median 2003 among the 735 with a school on file
  • Record last updated2024 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in California

There are 1,119 infectious disease physician records in California.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Oladunni Adeyiga, MDLos Angeles, CA 900951801809751
  2. Timothy Brewer, MDLos Angeles, CA 900951174523245
  3. Judith Currier, MDLos Angeles, CA 900951508882614
  4. Milan Fiala, MDLos Angeles, CA 900951730270737
  5. Aric Gregson, MDLos Angeles, CA 900951588683007
  6. Bernard Kubak, MDLos Angeles, CA 900951831118876
  7. Michael Lovett, MDLos Angeles, CA 900951053330902
  8. Glenn Mathisen, MDLos Angeles, CA 900951376564948

Common questions

What is Christopher Nicholas Tymchuk, MD's NPI number?

Christopher Nicholas Tymchuk, MD's National Provider Identifier (NPI) is 1104118561, issued on May 4, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Christopher Nicholas Tymchuk, MD located?

The NPPES record lists a practice address at 757 Westwood Plz Ste 7501, Los Angeles, CA, 90095. Phone: (310) 267-9643. Providers update this record themselves, so call before visiting.

How can I verify Christopher Nicholas Tymchuk, MD's license?

NPPES lists California license number A96133, 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 Christopher Nicholas Tymchuk, MD prescribe under Medicare Part D?

In 2024, Christopher Nicholas Tymchuk, MD had 316 Medicare Part D claims for 84 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.

What is Christopher Nicholas Tymchuk, MD's MIPS final score?

The 2023 MIPS final score is 87.1 of 100. 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.