NPPES file of Aug 9, 2026

Dennis William Delpaine, MD

Allergy & Immunology Physician · Stockton, CA

Dennis William Delpaine, MD is an allergy & immunology physician with a practice address in Stockton, California, and NPI 1851452213, issued on Dec 12, 2006. Check the license (California G37345, 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
1851452213
Name
Dennis William Delpaine
Credential
MD
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
G37345 CA
Self-reported in NPPES; status is on the state search
Practice location
5309 Carrington Circle, Stockton, CA 95210
Phone
(209) 951-4100
Enumerated
Dec 12, 2006
Record last updated
Mar 13, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(209) 951-2324
Medicaid ID
00G373450 CA
Medicare enrollment
Enrolled (PECOS I20120106000295); 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 William Delpaine in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G37345
    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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7.8 times the Medicare Part D claims of the average allergy & immunology physician in 2024

5,797 Medicare Part D claims for 573 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 637 claims were for opioids.

  1. Dennis Delpaine5,797
  2. Specialty average741

Most prescribed

  1. Hydroxychloroquine Sulfate1,016 claims
  2. Prednisone849 claims
  3. Methotrexate607 claims
  4. Hydrocodone-Acetaminophen291 claims
  5. Mirtazapine209 claims
  6. Gabapentin173 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): 3 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%10.0
  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: $2,350.79

116 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dennis Delpaine$2,350.79
  2. Specialty average$8,321.81

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

Dennis William Delpaine among 444 allergy & immunology physician records in California

Dennis William Delpaine, MD is one of 444 allergy & immunology 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 53% 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 281 with a school on file
  • Record last updated2020 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in California

There are 444 allergy & immunology physician records in California.

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Peter Kao, MDStockton, CA 952101275611188
  2. Michael Wong, MDStockton, CA 952101982782884
  3. Jun Lu, M.D.Stockton, CA 952091043403371
  4. Michael Balduzzi, MDStockton, CA 952071346565934
  5. Judy Del Mundo, M.D.San Jose, CA 951281942203013
  6. Katharine Nelson, MDSan Jose, CA 951281497921811
  7. Jacqueline Tan, PA-CSan Jose, CA 951281811619349
  8. Andrew Lozano, MDSan Jose, CA 951241831234095

Common questions

What is Dennis William Delpaine, MD's NPI number?

Dennis William Delpaine, MD's National Provider Identifier (NPI) is 1851452213, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Dennis William Delpaine, MD located?

The NPPES record lists a practice address at 5309 Carrington Circle, Stockton, CA, 95210. Phone: (209) 951-4100. Providers update this record themselves, so call before visiting.

How can I verify Dennis William Delpaine, MD's license?

NPPES lists California license number G37345, 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 William Delpaine, MD prescribe under Medicare Part D?

In 2024, Dennis William Delpaine, MD had 5,797 Medicare Part D claims for 573 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.

What is Dennis William Delpaine, MD's MIPS final score?

The 2023 MIPS final score is 3 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.