NPPES file of Aug 9, 2026

Dennis James Verducci, MD

Internal Medicine Physician · Sonoma, CA

Dennis James Verducci, MD is an internal medicine physician with a practice address in Sonoma, California, and NPI 1437265360, issued on Aug 22, 2006. Check the license (California G37110, 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
1437265360
Name
Dennis James Verducci
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
G37110 CA
Self-reported in NPPES; status is on the state search
Practice location
670 3RD St W, Sonoma, CA 95476
Phone
(707) 938-5916
Enumerated
Aug 22, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
GR0083820 CA
Medicare enrollment
Enrolled (PECOS I20090422000332); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 1977
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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Verify Dennis James Verducci in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G37110
    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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17% more Medicare Part D claims than the average internal medicine physician in 2024

3,720 Medicare Part D claims for 316 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 36 claims were for opioids.

  1. Dennis Verducci3,720
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium293 claims
  2. Losartan Potassium173 claims
  3. Amlodipine Besylate159 claims
  4. Eliquis130 claims
  5. Levothyroxine Sodium117 claims
  6. Metoprolol Succinate111 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): 12.8 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 score0.0
  2. Costout of 100 · 30%42.5
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

Industry payments in 2024: $142.86

6 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dennis Verducci$142.86
  2. Specialty average$1,303.06

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

Bills Medicare through 3 group practices

  1. Campbell And VerducciSonoma, CA
  2. Sonoma Valley Health Care DistrictSonoma, CA
  3. SV Hospitalist Medical Group IncSonoma, CA

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

Dennis James Verducci among 17,696 internal medicine physician records in California

Dennis James Verducci, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 56% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1977 · median 2004 among the 11,065 with a school on file
  • Record last updated2007 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

12 internal medicine physician records list a practice address in Sonoma

They are 12 of the 395 NPPES records with a practice address in Sonoma, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. John Boyce-Smith, MDSonoma, CA 954761255925590
  2. S Campbell, MDSonoma, CA 954761053427989
  3. Guy Delorefice, M.D.Sonoma, CA 954761952426421
  4. Lawrence Huan, MDSonoma, CA 954761881986206
  5. Victor Iacovoni, M.D.Sonoma, CA 954761619985348
  6. Clinton Lane, M.D.Sonoma, CA 954761679564611
  7. Yong Liu, M.D.Sonoma, CA 954761568424919
  8. Walter Prehn, MDSonoma, CA 954761225042088

Common questions

What is Dennis James Verducci, MD's NPI number?

Dennis James Verducci, MD's National Provider Identifier (NPI) is 1437265360, issued on Aug 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Dennis James Verducci, MD located?

The NPPES record lists a practice address at 670 3RD St W, Sonoma, CA, 95476. Phone: (707) 938-5916. Providers update this record themselves, so call before visiting.

How can I verify Dennis James Verducci, MD's license?

NPPES lists California license number G37110, 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 Dennis James Verducci, MD prescribe under Medicare Part D?

In 2024, Dennis James Verducci, MD had 3,720 Medicare Part D claims for 316 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Dennis James Verducci, MD's MIPS final score?

The 2023 MIPS final score is 12.8 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.