Dr. Katherine A. Hager, MD
- Medicare services, 2024
- 132
- Medicare patients, 2024
- 125
- Part D claims, 2024
- 104
- Hospital affiliations
- 1
- Industry payments
- $332
- Practice address
- 19 Prospect St, Summit, NJ 07901
- Practice phone
- Call (908) 522-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Katherine A. Hager is an internist in Summit, New Jersey
Dr. Hager practices at Summit Oaks Hospital in Summit, New Jersey, part of Universal Health Services.
Dr. Hager's NPI, 1316442684, was assigned on March 28, 2018. Dr. Hager holds New Jersey license 25MA11138700.
- NPI
- 1316442684NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082058052
- NPI enumeration date
- March 28, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (908) 522-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katherine A. Hager practices at Summit Oaks Hospital in Summit, New Jersey
Dr. Hager's primary practice is Summit Oaks Hospital, at 19 Prospect St, Summit, NJ 07901 in Union County. The practice phone is (908) 522-7000.
- Summit Oaks Hospital19 Prospect St, Summit, NJ 07901 · Union CountyPhone(908) 522-7000
Source: Dmand AI Affiliation Data
Dr. Katherine A. Hager is affiliated with 1 site of care and 1 medical group
Dr. Hager's primary practice is Summit Oaks Hospital in Summit, New Jersey, part of Universal Health Services. The medical group on file is Summit Oaks Hospital. Dr. Hager's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Katherine A. Hager's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hager practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Summit Oaks Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katherine A. Hager is one of 4,226 internists in New Jersey
Internal medicine is Dr. Hager's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hager is licensed in New Jersey.
Specialties and state licenses
- Internal medicine, New JerseyPrimary
Internists near Dr. Hager
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Katherine A. Hager billed Medicare for 132 services in 2024
CMS data shows 132 Medicare services from Dr. Hager across 1 procedure code in 2024, for 125 Medicare patients. Medicare paid $9,160 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hager compared with the New Jersey median for internists, 2024
- Dr. Hager
- New Jersey median
- Medicare services
- 132vs 72382% below
- Medicare patients
- 125vs 23146% below
- Part D claims
- 51vs 83094% below
Medians across 4,086 internists in New Jersey with Dmand AI profiles that report each measure.
Dr. Hager's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katherine A. Hager treated 125 Medicare patients in 2024, average age 55
CMS counts 125 Medicare patients who saw Dr. Hager in 2024. The largest group is under 65, with 84 patients. 75% of them have alcohol and drug use disorders, and 75% have anxiety. 51% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hager's median patient age at 56, with 39% women.
Dr. Hager's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hager's Medicare patients by sex, 2024
- Women6149%
- Men6451%
Chronic conditions among Dr. Hager's Medicare patients, 2024
- Alcohol and drug use disorders75%
- Anxiety75%
- Depression75%
- Mood disorders75%
- High blood pressure70%
- Bipolar disorder64%
- Tobacco use62%
- High cholesterol58%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hager's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women39%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Katherine A. Hager wrote 104 Medicare Part D claims in 2024
In 2024, Dr. Hager wrote 104 Medicare Part D claims for 67 patients. 66% of them were for generic drugs. CMS names the drug for 51 of them, across 4 drugs with 11 or more claims each, at $193,359 in total drug cost. In 2022, CMS named 64 claims across 4 drugs.
Dr. Hager's Part D claims by kind of drug, 2024
- Generic69 claims66%
- Brand-name and other35 claims34%
Dr. Hager's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hager's Part D claims, 2024
- Antibiotics15%16 of 104 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 642023: 5120%
Drugs named by CMS: 4 in 2023, 4 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Katherine A. Hager takes part in Medicare
Dr. Hager accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Katherine A. Hager received $332 in industry payments from 2024 to 2025
CMS Open Payments shows 18 general payments to Dr. Hager from 11 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $87.
General payments to Dr. Hager by program year, 2024 to 2025
Companies that paid Dr. Hager the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Katherine A. Hager's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Katherine A. Hager
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Katherine A. Hager's NPI number?
Dr. Katherine A. Hager's NPI number is 1316442684. It was assigned on March 28, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Katherine A. Hager?
Dr. Katherine A. Hager is an internist in Summit, New Jersey. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Katherine A. Hager practice?
Dr. Hager practices at 19 Prospect St, Summit, NJ 07901. Dr. Hager's primary practice is Summit Oaks Hospital in Summit, New Jersey, part of Universal Health Services.
What is Dr. Katherine A. Hager's office phone number?
The practice phone on file for Dr. Hager is (908) 522-7000.
What is Dr. Katherine A. Hager's medical license number?
Dr. Hager holds New Jersey license 25MA11138700.
Which hospitals is Dr. Katherine A. Hager affiliated with?
Dr. Hager practices at Summit Oaks Hospital in Summit, New Jersey.
What medical group is Dr. Katherine A. Hager part of?
Dr. Hager is linked to Summit Oaks Hospital.
Does Dr. Katherine A. Hager accept Medicare?
Yes. CMS data shows Dr. Hager billed Medicare for 132 services in 2024, and Dr. Hager accepts Medicare assignment.
How many Medicare patients does Dr. Katherine A. Hager see?
CMS counts 125 Medicare patients who saw Dr. Hager in 2024, with an average age of 55.
What services does Dr. Katherine A. Hager bill to Medicare?
In 2024, Dr. Hager's most billed Medicare services were hospital inpatient care (99221).
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What drugs does Dr. Katherine A. Hager prescribe most?
In 2023 Medicare Part D data, Dr. Hager's most prescribed drugs by claims were Biktarvy, Cabenuva and Atorvastatin Calcium.
Has Dr. Katherine A. Hager received payments from drug or device companies?
CMS Open Payments shows $332 in general payments to Dr. Hager from 11 companies from 2024 to 2025. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Katherine A. Hager been practicing?
Dr. Hager graduated from medical school in 2017, 9 years ago.
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