NPPES file of Aug 9, 2026

Christopher J. Chen, MD

Adult Reconstructive Orthopaedic Surgery Physician · Berkeley, CA

Christopher J. Chen, MD is an adult reconstructive orthopaedic surgery physician with a practice address in Berkeley, California, and NPI 1396734505, issued on Oct 19, 2005. Check the license (California A75341, 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
1396734505
Name
Christopher J. Chen
Credential
MD
Primary taxonomy
Adult Reconstructive Orthopaedic Surgery Physician 207XS0114X
License number
A75341 CA
Self-reported in NPPES; status is on the state search
Practice location
3000 Colby St, Berkeley, CA 94705
Phone
(510) 647-1200
Enumerated
Oct 19, 2005
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(510) 647-1205
Medicare enrollment
Enrolled (PECOS I20040621000785); accepts Medicare assignment
Medical or professional school
Washington University School Of Medicine, 1996
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 3000 Colby St

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

  1. Suzanne Bodor-Billings, M.D.Internal Medicine Physician1356491724
  2. Mark Carlisle, M.D.Anesthesiology Physician1831313378
  3. Kathryn Drinkard, MDInternal Medicine Physician1487740437
  4. Broheen Elias, PA-CPhysician Assistant1164586681
  5. Daniel Fazio, M.D.Anesthesiology Physician1891823340
  6. Roxanne Fiscella, MDFamily Medicine Physician1598866170

Verify Christopher J. Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A75341
    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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3% more Medicare Part D claims than the average adult reconstructive orthopaedic surgery physician in 2024

596 Medicare Part D claims for 219 beneficiaries, against an average of 579 among the 1,112 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 184 claims were for opioids.

  1. Christopher Chen596
  2. Specialty average579

Most prescribed

  1. Meloxicam218 claims
  2. Oxycodone-Acetaminophen154 claims
  3. Amoxicillin87 claims
  4. Eliquis23 claims
  5. Celecoxib21 claims
  6. Cephalexin18 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): 77.1 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 score54.3
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Industry payments in 2024: $7,161.60

3 payments; by number, the most common kind was consulting fee; the largest payer was Pharmacosmos Therapeutics Inc. The 1,060 providers of this specialty with any payment received $68,015.27 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Christopher Chen$7,162
  2. Specialty average$68,015

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

Christopher J. Chen among 147 adult reconstructive orthopaedic surgery physician records in California

Christopher J. Chen, MD is one of 147 adult reconstructive orthopaedic surgery physician records with a practice address in California. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 95% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated1996 · median 2009 among the 112 with a school on file
  • Record last updated2007 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XS0114X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Reconstructive Orthopaedic Surgery Physician providers in California

There are 147 adult reconstructive orthopaedic surgery physician records in California.

The 8 adult reconstructive orthopaedic surgery physician records with the nearest ZIP codes

  1. Wendy Wong, M.D.Walnut Creek, CA 945981356584007
  2. Joseph Buck, M.D.Walnut Creek, CA 945961366837304
  3. Stefan Jibodh, M.D.Walnut Creek, CA 945961508875642
  4. Vincent Yamamoto, M.D.Walnut Creek, CA 945961629192240
  5. Ryan Moore, MDSaint Helena, CA 945741528266202
  6. Alexander Bradley, MDDublin, CA 945681194259077
  7. Aaron Salyapongse, MDDublin, CA 945681598711681
  8. John Diana, M.D.Napa, CA 945581649297540

Common questions

What is Christopher J. Chen, MD's NPI number?

Christopher J. Chen, MD's National Provider Identifier (NPI) is 1396734505, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Christopher J. Chen, MD located?

The NPPES record lists a practice address at 3000 Colby St, Berkeley, CA, 94705. Phone: (510) 647-1200. Providers update this record themselves, so call before visiting.

How can I verify Christopher J. Chen, MD's license?

NPPES lists California license number A75341, 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 J. Chen, MD prescribe under Medicare Part D?

In 2024, Christopher J. Chen, MD had 596 Medicare Part D claims for 219 beneficiaries; the average among adult reconstructive orthopaedic surgery physician prescribers was 579. Part D covers Medicare prescriptions only.

What is Christopher J. Chen, MD's MIPS final score?

The 2023 MIPS final score is 77.1 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.