NPPES file of Aug 9, 2026

Scott A. Derkum, MD

Hospitalist Physician · Irvine, CA

Scott A. Derkum, MD is a hospitalist physician with a practice address in Irvine, California, and NPI 1588660849, issued on Jun 22, 2005. Check the license (California C54344, 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
1588660849
Name
Scott A. Derkum
Credential
MD
Primary taxonomy
Hospitalist Physician 208M00000X
License numbers
C54344 CA
ME74898 FL
Self-reported in NPPES; status is on the state search
Practice location
16200 Sand Canyon Ave, Irvine, CA 92618
Phone
(949) 610-7245
Enumerated
Jun 22, 2005
Record last updated
May 30, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(657) 241-7720
Medicaid ID
254121100 FL
Medicare enrollment
Enrolled (PECOS I20101221000375); accepts Medicare assignment
Medical or professional school
Eastern Virginia Medical School, 1995
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 16200 Sand Canyon Ave

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

  1. Christine AyalaNurse Practitioner1831879154
  2. Nicholas Bove, MDEmergency Medicine Physician1255837837
  3. David Calica, M.D.Anesthesiology Physician1780787606
  4. Danielle CarlsonRegistered Nurse1710850409
  5. John Chien, M.D.Hospitalist Physician1790043651
  6. Michael Cho, M.D.Hospitalist Physician1184915001

Verify Scott A. Derkum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C54344
    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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30% fewer Medicare Part D claims than the average hospitalist physician in 2024

363 Medicare Part D claims for 155 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Scott Derkum363
  2. Specialty average521

Most prescribed

  1. Amoxicillin-Clavulanate Potass22 claims
  2. Ertapenem18 claims
  3. Furosemide17 claims
  4. Levofloxacin17 claims
  5. Amlodipine Besylate15 claims
  6. Cefuroxime11 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): 76.3 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 score62.7
  2. Costout of 100 · 30%59.3
  3. Promoting interoperabilitynot scored (reweighted)
  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. Pih Health PhysiciansWhittier, CA

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

Scott A. Derkum among 3,099 hospitalist physician records in California

Scott A. Derkum, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% 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, 98% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated1995 · median 2010 among the 2,505 with a school on file
  • Record last updated2017 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in California

There are 3,099 hospitalist physician records in California.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Ali Ahoui, MDIrvine, CA 926181093964769
  2. Robert Cho, M.D.Irvine, CA 926181760578512
  3. John Dieckhoff, M.D.Irvine, CA 926181700068152
  4. Veejay Geria, M.D.Irvine, CA 926181821193467
  5. Derrick Hong, M.DIrvine, CA 926181124040696
  6. Nam Kim, MDIrvine, CA 926181861572513
  7. Ewa Kontny, M.D.Irvine, CA 926181598916587
  8. Meenu Kwatra, MDIrvine, CA 926181265510028

Common questions

What is Scott A. Derkum, MD's NPI number?

Scott A. Derkum, MD's National Provider Identifier (NPI) is 1588660849, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Scott A. Derkum, MD located?

The NPPES record lists a practice address at 16200 Sand Canyon Ave, Irvine, CA, 92618. Phone: (949) 610-7245. Providers update this record themselves, so call before visiting.

How can I verify Scott A. Derkum, MD's license?

NPPES lists California license number C54344, 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 Scott A. Derkum, MD prescribe under Medicare Part D?

In 2024, Scott A. Derkum, MD had 363 Medicare Part D claims for 155 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.

What is Scott A. Derkum, MD's MIPS final score?

The 2023 MIPS final score is 76.3 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.