NPPES file of Aug 9, 2026

Nishan Tchekmedyian, MD

Hematology & Oncology Physician · Huntington Beach, CA

Nishan Tchekmedyian, MD is a hematology & oncology physician with a practice address in Huntington Beach, California, and NPI 1235450305, issued on Jun 11, 2010. Check the license (California A137047, 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
1235450305
Name
Nishan Tchekmedyian
Credential
MD
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A137047 CA
Self-reported in NPPES; status is on the state search
Practice location
2100 Main St Ste 300, Huntington Beach, CA 92648
Phone
(714) 252-9415
Enumerated
Jun 11, 2010
Record last updated
May 30, 2024
Fax
(714) 963-8407
Medicare enrollment
Enrolled (PECOS I20160922001357); 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 2100 Main St Ste 300

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

  1. Luke Chen, M.D.Hematology & Oncology Physician1265451736
  2. Katherine Cunha, NPFamily Nurse Practitioner1699242776
  3. Paula Dithomas, FNP-CFamily Nurse Practitioner1740623453
  4. Danny Nguyen, M.D.Hematology & Oncology Physician1386960334
  5. Sharon Westerberg, PA-CPhysician Assistant1629097191
  6. Alexander Zhu, DOUrology Physician1427615376

Verify Nishan Tchekmedyian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A137047
    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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35% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

568 Medicare Part D claims for 117 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 31% of claims. 29 claims were for opioids.

  1. Nishan Tchekmedyian568
  2. Specialty average877

Most prescribed

  1. Dexamethasone38 claims
  2. Prednisone33 claims
  3. Abiraterone Acetate26 claims
  4. Prochlorperazine Maleate23 claims
  5. Tagrisso23 claims
  6. Ondansetron Hcl20 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 practice group's MIPS final score for 2023 (Medicare payment program): 99.1 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. Qualityout of 100 · 30% of the final score85.2
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  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).

Bills Medicare through one group practice

  1. City OF Hope Medical FoundationIrvine, CA

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

Nishan Tchekmedyian among 1,583 hematology & oncology physician records in California

Nishan Tchekmedyian, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 70% of them.

  • NPI issued2010 · 70% of these records are older, 28% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2010 · median 2003 among the 1,124 with a school on file
  • Record last updated2024 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Mohamad BarakatHuntington Beach, CA 926481558534131
  2. David Burtzo, M.D.Huntington Beach, CA 926481336168814
  3. Luke Chen, M.D.Huntington Beach, CA 926481265451736
  4. Umair Ghani, M.D.Huntington Beach, CA 926481619266228
  5. Yaser Homsi, M.D.Huntington Beach, CA 926481790943983
  6. An Nguyen, M.D.Huntington Beach, CA 926481023011384
  7. Danny Nguyen, M.D.Huntington Beach, CA 926481386960334
  8. Karlos Oregel, M.D.Huntington Beach, CA 926481184913006

Common questions

What is Nishan Tchekmedyian, MD's NPI number?

Nishan Tchekmedyian, MD's National Provider Identifier (NPI) is 1235450305, issued on Jun 11, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Nishan Tchekmedyian, MD located?

The NPPES record lists a practice address at 2100 Main St Ste 300, Huntington Beach, CA, 92648. Phone: (714) 252-9415. Providers update this record themselves, so call before visiting.

How can I verify Nishan Tchekmedyian, MD's license?

NPPES lists California license number A137047, 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 Nishan Tchekmedyian, MD prescribe under Medicare Part D?

In 2024, Nishan Tchekmedyian, MD had 568 Medicare Part D claims for 117 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

What is Nishan Tchekmedyian, MD's MIPS final score?

The 2023 MIPS final score is 99.1 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.