NPPES file of Aug 9, 2026

Paul Nguyen, D.O.

Surgery Physician · Santa Cruz, CA

Paul Nguyen, D.O. is a surgery physician with a practice address in Santa Cruz, California, and NPI 1184911968, issued on Jun 30, 2011. Check the license (California 20A14554, 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
1184911968
Name
Paul Nguyen
Credential
D.O.
Primary taxonomy
Surgery Physician 208600000X
License numbers
20A14554 CA
5101019363 MI
Self-reported in NPPES; status is on the state search
Practice location
1668 Dominican Way, Santa Cruz, CA 95065
Phone
(831) 464-9962
Enumerated
Jun 30, 2011
Record last updated
May 26, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(831) 464-9933
Medicare enrollment
Enrolled (PECOS I20160713000776); accepts Medicare assignment
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 1668 Dominican Way

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

  1. Zachary Lamm, PA-CPhysician Assistant1619639093
  2. Louis Lee, MDSurgery Physician1093972192
  3. Monika Lin, PASurgical Physician Assistant1841676467
  4. Jessica Santillano, M.D.Surgery Physician1033359211
  5. Tracy Smythe, PASurgical Physician Assistant1083024467
  6. Lawrence Spingola, M.D.Surgery Physician1063581098

Verify Paul Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A14554
    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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42% fewer Medicare Part D claims than the average surgery physician in 2024

85 Medicare Part D claims for 75 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 55 claims were for opioids.

  1. Paul Nguyen85
  2. Specialty average147

Most prescribed

  1. Oxycodone-Acetaminophen47 claims
  2. Gavilyte-G15 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): 89.5 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 score66.7
  2. Costout of 100 · 30%100.0
  3. Promoting interoperabilityout of 100 · 25%78.0
  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: $698.46

5 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Paul Nguyen$698.46
  2. Specialty average$3,513.80

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. Surgical Associates OF Monterey Bay Medical CorporationSanta Cruz, CA

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

Paul Nguyen among 3,118 surgery physician records in California

Paul Nguyen, D.O. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.

  • NPI issued2011 · 70% of these records are older, 27% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2011 · median 2003 among the 1,901 with a school on file
  • Record last updated2016 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. David Albritton, MDSanta Cruz, CA 950651407818248
  2. Isaac Chankai, MDSanta Cruz, CA 950651922259720
  3. Joseph FabrySanta Cruz, CA 950651982684569
  4. Matthew Hansman, MDSanta Cruz, CA 950651831179704
  5. Kathleen Hertzer, M.D.Santa Cruz, CA 950651467778217
  6. Marcus Kwan, M.D.Santa Cruz, CA 950651891788592
  7. Louis Lee, MDSanta Cruz, CA 950651093972192
  8. Rodney Lowe, M.D.Santa Cruz, CA 950651891867560

Common questions

What is Paul Nguyen, D.O.'s NPI number?

Paul Nguyen, D.O.'s National Provider Identifier (NPI) is 1184911968, issued on Jun 30, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Paul Nguyen, D.O. located?

The NPPES record lists a practice address at 1668 Dominican Way, Santa Cruz, CA, 95065. Phone: (831) 464-9962. Providers update this record themselves, so call before visiting.

How can I verify Paul Nguyen, D.O.'s license?

NPPES lists California license number 20A14554, 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 Paul Nguyen, D.O. prescribe under Medicare Part D?

In 2024, Paul Nguyen, D.O. had 85 Medicare Part D claims for 75 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.

What is Paul Nguyen, D.O.'s MIPS final score?

The 2023 MIPS final score is 89.5 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.