NPPES file of Aug 9, 2026

George Tischenko, M.D.

Orthopaedic Surgery Physician · Walnut Creek, CA

George Tischenko, M.D. is an orthopaedic surgery physician with a practice address in Walnut Creek, California, and NPI 1639128572, issued on May 9, 2006. Check the license (California G55232, 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
1639128572
Name
George Tischenko
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
G55232 CA
Self-reported in NPPES; status is on the state search
Practice location
2405 Shadelands Dr Ste 300, Walnut Creek, CA 94598
Phone
(925) 939-8585
Enumerated
May 9, 2006
Record last updated
Nov 12, 2025
Fax
(925) 933-2709
Medicare enrollment
Enrolled (PECOS I20040727000897); accepts Medicare assignment
Medical or professional school
University Of Cincinnati College Of Medicine, 1983
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 2405 Shadelands Dr Ste 300

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

  1. Cherlyn Alferos, FNPFamily Nurse Practitioner1568155430
  2. Petra Cardona, PA-CSurgical Physician Assistant1851996573
  3. Danielle Chapman, NPNurse Practitioner1720930217
  4. Mark Christiansen, MDEndocrinology, Diabetes & Metabolism Physician1821108218
  5. Brian Costello, PHYSICIAN ASSISTANTSurgical Physician Assistant1396833257
  6. Kathleen Grant, PHYSICIAN ASSISTANTSurgical Physician Assistant1700125440

Verify George Tischenko in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G55232
    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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59% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

142 Medicare Part D claims for 95 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 24 claims were for opioids.

  1. George Tischenko142
  2. Specialty average346

Most prescribed

  1. Cephalexin26 claims
  2. Lorazepam18 claims
  3. Gabapentin16 claims
  4. Celecoxib15 claims
  5. Prednisone14 claims
  6. Hydrocodone-Acetaminophen13 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.

No measured MIPS final score for 2023

CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.

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

Industry payments in 2024: $22.58

1 payment: food and beverage; the largest payer was Becton, Dickinson and Company. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. George Tischenko$23
  2. Specialty average$23,023

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. Golden State Orthopedics And SpineWalnut Creek, CA

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

George Tischenko among 2,276 orthopaedic surgery physician records in California

George Tischenko, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1983 · median 2003 among the 1,347 with a school on file
  • Record last updated2025 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in California

There are 2,276 orthopaedic surgery physician records in California.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Afshin AnoushiravaniWalnut Creek, CA 945981003310293
  2. Robert Buckley, M.D.Walnut Creek, CA 945981952351280
  3. Leo Calafi, MDWalnut Creek, CA 945981720079072
  4. David Contreras, M.D.Walnut Creek, CA 945981821048216
  5. Robert Flaig, M.D.Walnut Creek, CA 945981386818102
  6. Sean Griffiths, D.O.Walnut Creek, CA 945981457705667
  7. John Knight, M.D.Walnut Creek, CA 945981558310938
  8. John Kronick, M.D.Walnut Creek, CA 945981639129034

Common questions

What is George Tischenko, M.D.'s NPI number?

George Tischenko, M.D.'s National Provider Identifier (NPI) is 1639128572, issued on May 9, 2006. An NPI identifies a provider in billing; it is not a license.

Where is George Tischenko, M.D. located?

The NPPES record lists a practice address at 2405 Shadelands Dr Ste 300, Walnut Creek, CA, 94598. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.

How can I verify George Tischenko, M.D.'s license?

NPPES lists California license number G55232, 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 George Tischenko, M.D. prescribe under Medicare Part D?

In 2024, George Tischenko, M.D. had 142 Medicare Part D claims for 95 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.

What is George Tischenko, M.D.'s MIPS final score?

CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.

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.