NPPES file of Aug 9, 2026

Ellen Duveneck, MD

Family Medicine Physician · Califon, NJ

Ellen Duveneck, MD is a family medicine physician with a practice address in Califon, New Jersey, and NPI 1326422643, issued on Jul 16, 2015. Check the license (New Jersey 25MA10228600, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326422643
Name
Ellen Duveneck
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
25MA10228600 NJ
Self-reported in NPPES; status is on the state search
Practice location
384 County Road 513, Califon, NJ 07830
Phone
(908) 832-2125
Enumerated
Jul 16, 2015
Record last updated
Sep 16, 2019 (not updated in 7 years: call before relying on the address or phone)
Fax
(908) 832-6149
Medicare enrollment
Enrolled (PECOS I20180905001327); accepts Medicare assignment
Medical or professional school
Pennsylvania State University College Of Medicine, 2005
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 384 County Road 513

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

  1. Michael BriskiFamily Medicine Physician1427613850
  2. Raymond Byrd, MDFamily Medicine Physician1235127994
  3. Joseph Jaskolski, MDFamily Medicine Physician1295723807
  4. Angela Lee, DOFamily Medicine Physician1053848382
  5. John McGowan, MDFamily Medicine Physician1568450237
  6. Karen Williams, M.D.Family Medicine Physician1710911391

Verify Ellen Duveneck in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license 25MA10228600
    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 New Jersey 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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62% fewer Medicare Part D claims than the average family medicine physician in 2024

1,351 Medicare Part D claims for 239 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 51 claims were for opioids.

  1. Ellen Duveneck1,351
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium92 claims
  2. Levothyroxine Sodium69 claims
  3. Lisinopril48 claims
  4. Amlodipine Besylate42 claims
  5. Losartan Potassium35 claims
  6. Bupropion Xl31 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.

One hospital affiliation

  1. Hunterdon Medical CenterMilford, NJ · Acute Care Hospitals4 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Ellen Duveneck among 2,770 family medicine physician records in New Jersey

Ellen Duveneck, MD is one of 2,770 family medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 74% of them.

  • NPI issued2015 · 74% of these records are older, 23% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2005 · median 2006 among the 1,875 with a school on file
  • Record last updated2019 · 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 207Q00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 family medicine physician records list a practice address in Califon

They are 8 of the 51 NPPES records with a practice address in Califon, and 2,770 family medicine physician records in New Jersey.

The 8 family medicine physician records with the nearest ZIP codes

  1. Michael BriskiCalifon, NJ 078301427613850
  2. Raymond Byrd, MDCalifon, NJ 078301235127994
  3. Joseph Jaskolski, MDCalifon, NJ 078301295723807
  4. Angela Lee, DOCalifon, NJ 078301053848382
  5. David LevyCalifon, NJ 078301740118108
  6. John McGowan, MDCalifon, NJ 078301568450237
  7. Karen Williams, M.D.Califon, NJ 078301710911391
  8. Eugene Cullen, M.D.Columbia, NJ 078321487620407

Common questions

What is Ellen Duveneck, MD's NPI number?

Ellen Duveneck, MD's National Provider Identifier (NPI) is 1326422643, issued on Jul 16, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Ellen Duveneck, MD located?

The NPPES record lists a practice address at 384 County Road 513, Califon, NJ, 07830. Phone: (908) 832-2125. Providers update this record themselves, so call before visiting.

How can I verify Ellen Duveneck, MD's license?

NPPES lists New Jersey license number 25MA10228600, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Ellen Duveneck, MD prescribe under Medicare Part D?

In 2024, Ellen Duveneck, MD had 1,351 Medicare Part D claims for 239 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

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.