NPPES file of Aug 9, 2026

Julia Arzeno, M.D. (06/2017)

Dermatology Physician · San Jose, CA

Julia Arzeno, M.D. (06/2017) is a dermatology physician with a practice address in San Jose, California, and NPI 1578094785, issued on Mar 21, 2017. Check the license (California A160666, 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
1578094785
Name
Julia Arzeno
Credential
M.D. (06/2017)
Primary taxonomy
Dermatology Physician 207N00000X
License number
A160666 CA
Self-reported in NPPES; status is on the state search
Practice location
2420 Samaritan Dr, San Jose, CA 95124
Phone
(408) 369-5600
Enumerated
Mar 21, 2017
Record last updated
Oct 16, 2025
Fax
(408) 369-5625
Medicare enrollment
Enrolled (PECOS I20220722000632); accepts Medicare assignment
Medical or professional school
University Of California, Geffen School Of Medicine, 2017
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 2420 Samaritan Dr

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

  1. Joseph Cirone, MDPediatrics Physician1457319022
  2. Sebastien De Feraudy, MD-PHDAnatomic Pathology Physician1982913844
  3. Bryan Gammon, M.D.Dermatopathology Physician1518134154
  4. Joe Gorelick, N.PNurse Practitioner1811061369

Verify Julia Arzeno in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A160666
    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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14% more Medicare Part D claims than the average dermatology physician in 2024

910 Medicare Part D claims for 500 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 25 claims were for opioids.

  1. Julia Arzeno910
  2. Specialty average797

Most prescribed

  1. Mupirocin455 claims
  2. Doxycycline Monohydrate221 claims
  3. Doxycycline Hyclate76 claims
  4. Cephalexin44 claims
  5. Gentamicin Sulfate26 claims
  6. Hydrocodone-Acetaminophen22 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): 98.3 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. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%98.0
  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).

Industry payments in 2024: $627.17

28 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Julia Arzeno$627.17
  2. Specialty average$8,544.61

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. Csi Medical GroupSan Jose, CA

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

Julia Arzeno among 2,083 dermatology physician records in California

Julia Arzeno, M.D. (06/2017) is one of 2,083 dermatology 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 2017, is newer than 83% of them.

  • NPI issued2017 · 83% of these records are older, 14% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2017 · median 2006 among the 1,450 with a school on file
  • Record last updated2025 · 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 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in California

There are 2,083 dermatology physician records in California.

The 8 dermatology physician records with the nearest ZIP codes

  1. Michele Mak-Fung, M.D.San Jose, CA 951241174661086
  2. Anthony Matukas, MDSan Jose, CA 951241669469003
  3. Mina Ally, M.D.San Jose, CA 951231528467099
  4. Michelle ChengSan Jose, CA 951231467871590
  5. Kathryn Martires, M.D.San Jose, CA 951231033485461
  6. Yi Yang, MDSan Jose, CA 951231487141792
  7. Hong Do, M.D.San Jose, CA 951221720181399
  8. Anthony Badame, M.D.San Jose, CA 951281285676551

Common questions

What is Julia Arzeno, M.D. (06/2017)'s NPI number?

Julia Arzeno, M.D. (06/2017)'s National Provider Identifier (NPI) is 1578094785, issued on Mar 21, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Julia Arzeno, M.D. (06/2017) located?

The NPPES record lists a practice address at 2420 Samaritan Dr, San Jose, CA, 95124. Phone: (408) 369-5600. Providers update this record themselves, so call before visiting.

How can I verify Julia Arzeno, M.D. (06/2017)'s license?

NPPES lists California license number A160666, 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 Julia Arzeno, M.D. (06/2017) prescribe under Medicare Part D?

In 2024, Julia Arzeno, M.D. (06/2017) had 910 Medicare Part D claims for 500 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is Julia Arzeno, M.D. (06/2017)'s MIPS final score?

The 2023 MIPS final score is 98.3 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.