Katherine Hager, MD
Internal Medicine Physician · Summit, NJ
Katherine Hager, MD is an internal medicine physician with a practice address in Summit, New Jersey, and NPI 1316442684, issued on Mar 28, 2018. Check the license (New Jersey 25MA11138700, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Katherine Hager
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA11138700 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 19 Prospect St, Summit, NJ 07901
- Phone
- (908) 522-7000
- Enumerated
- Mar 28, 2018
- Record last updated
- Feb 16, 2024
- Medicare enrollment
- Enrolled (PECOS I20240217000067); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 19 Prospect St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Hager in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA11138700Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
104 Medicare Part D claims for 67 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $239.86
13 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, 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.
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
- Summit Oaks Hospital IncSummit, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Hager among 4,632 internal medicine physician records in New Jersey
Katherine Hager, MD is one of 4,632 internal 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2017 · median 2000 among the 3,132 with a school on file
- Record last updated2024 · 63% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 internal medicine physician records list a practice address in Summit
They are 54 of the 1,151 NPPES records with a practice address in Summit, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Summit → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sharen Anghel, MDSummit, NJ 079011922161546
- Richard Berardi, D.O.Summit, NJ 079011245244987
- Vineesh Bhatnagar, MDSummit, NJ 079011346295227
- Michael Blecker, MDSummit, NJ 079011871551572
- Pramod Goodluck, MDSummit, NJ 079011568439479
- Jon Hershkowitz, MDSummit, NJ 079011811985203
- Thomas Jackson, MDSummit, NJ 079011245330950
- Emily Jeffries, MDSummit, NJ 079011093704934
Common questions
What is Katherine Hager, MD's NPI number?
Katherine Hager, MD's National Provider Identifier (NPI) is 1316442684, issued on Mar 28, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Hager, MD located?
The NPPES record lists a practice address at 19 Prospect St, Summit, NJ, 07901. Phone: (908) 522-7000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Hager, MD's license?
NPPES lists New Jersey license number 25MA11138700, 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 Katherine Hager, MD prescribe under Medicare Part D?
In 2024, Katherine Hager, MD had 104 Medicare Part D claims for 67 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.