Am J Clin Oncol
Biomarkers, TumorBrachytherapyImmunocompromised Host
Dr. Kara Hertzfeld, MD
NPI1174742472PAC ID5698968592
- Medicare services, 2024
- 1,826
- Medicare patients, 2024
- 148
- Part D claims, 2024
- 175
- Publications
- 1
- Hospital affiliations
- 3
- Practice address
- 2142 N Cove Blvd, Toledo, OH 43606
- Practice phone
- Call (419) 593-0214
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
ProMedica Toledo Hospital Emergency Center
Toledo, Ohio
Find Dr. Hertzfeld's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Kara Hertzfeld is a radiation oncologist in Toledo, Ohio
Dr. Hertzfeld practices at ProMedica Toledo Hospital Emergency Center in Toledo, Ohio.
Dr. Hertzfeld's NPI, 1174742472, was assigned on April 25, 2007. Dr. Hertzfeld graduated from University of Cincinnati College of Medicine in 2005. Dr. Hertzfeld holds Ohio license 35095467.
NPI and contact details
- NPI
- 1174742472NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698968592
- NPI enumeration date
- April 25, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 593-0214
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kara Hertzfeld practices at ProMedica Toledo Hospital Emergency Center in Toledo, Ohio
Dr. Hertzfeld's primary practice is ProMedica Toledo Hospital Emergency Center, at 2142 N Cove Blvd, Toledo, OH 43606 in Lucas County. The practice phone is (419) 593-0214.
- ProMedica Toledo Hospital Emergency Center2142 N Cove Blvd, Toledo, OH 43606 · Lucas CountyPhone(419) 593-0214
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kara Hertzfeld is affiliated with 4 sites of care and 2 medical groups
Dr. Hertzfeld's primary practice is ProMedica Toledo Hospital Emergency Center in Toledo, Ohio. Dr. Hertzfeld is also affiliated with ProMedica Toledo Hospital. The medical group on file is ProMedica Physicians. Dmand AI also links Dr. Hertzfeld to 2 more hospitals and 1 medical group, each named with a free account.
ProMedica Toledo Hospital Emergency CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kara Hertzfeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hertzfeld practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ProMedica Toledo Hospital Emergency Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Kara Hertzfeld is one of 267 radiation oncologists in Ohio
Radiation oncology is Dr. Hertzfeld's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Hertzfeld's licenses on file in 2 states: Ohio and Michigan.
Specialties and state licenses
- Radiation oncology, OhioPrimary
- Michigan license
Radiation oncologists near Dr. Hertzfeld
Counts of radiation oncologists 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. Kara Hertzfeld billed Medicare for 1,826 services in 2024
CMS data shows 1,826 Medicare services from Dr. Hertzfeld across 17 procedure codes in 2024, for 148 Medicare patients. Medicare paid $127,830 for them.
Medicare services, 20241,826
Medicare patients148
Paid by Medicare$127,830
Procedure codes17
Dr. Hertzfeld's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,0422024: 1,49543%
- Other services
- 2023: 1702024: 1869%
- Office and hospital visits
- 2023: 1122024: 14529%
Where Dr. Hertzfeld's Medicare services took place, 2024
- In an office1,80999%
- In a facility171%
Dr. Hertzfeld compared with the Ohio median for radiation oncologists, 2024
- Dr. Hertzfeld
- Ohio median
- Medicare services
- 1,826vs 1,12063% above
- Medicare patients
- 148vs 1576% below
- Part D claims
- 83vs 312.7 times
Medians across 262 radiation oncologists in Ohio with Dmand AI profiles that report each measure.
Dr. Hertzfeld'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.
Need commercial claims for Dr. Hertzfeld?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hertzfeld and other radiation oncologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kara Hertzfeld treated 148 Medicare patients in 2024, average age 73
CMS counts 148 Medicare patients who saw Dr. Hertzfeld in 2024. The largest group is 65 to 74, with 77 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.55, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hertzfeld's median patient age at 73, with 49% women.
Medicare patients, 2024148
Average age73
Average risk score1.55
Dr. Hertzfeld's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hertzfeld's Medicare patients by sex, 2024
- Women6846%
- Men8054%
Chronic conditions among Dr. Hertzfeld's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer72%
- Arthritis49%
- Ischemic heart disease36%
- Diabetes32%
- Anxiety31%
- Mood disorders29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hertzfeld's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kara Hertzfeld wrote 175 Medicare Part D claims in 2024
In 2024, Dr. Hertzfeld wrote 175 Medicare Part D claims for 86 patients. 86% of them were for generic drugs. CMS names the drug for 83 of them, across 2 drugs with 11 or more claims each, at $2,656 in total drug cost. In 2023, CMS named 74 claims across 3 drugs.
Part D claims, 2024175
Drugs named by CMS2
Total drug cost$2,656
Part D patients86
Dr. Hertzfeld's Part D claims by kind of drug, 2024
- Generic151 claims86%
- Brand-name24 claims14%
Dr. Hertzfeld's most prescribed drugs by claims, 2024
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. Hertzfeld's Part D claims, 2024
- Antibiotics6%11 of 175 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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 742024: 8312%
Drugs named by CMS: 2 in 2024, 3 in 2023.
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. Kara Hertzfeld takes part in Medicare
Dr. Hertzfeld 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. Kara Hertzfeld has 1 publication on record
Dmand AI links 1 paper to Dr. Hertzfeld. Dr. Hertzfeld's most frequent co-authors are William L. Barrett, MD and Catherine C. Coombs, MD.
Papers1
Dr. Hertzfeld's most frequent co-authors
Recent publications by Dr. Hertzfeld
See who Dr. Hertzfeld researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hertzfeld works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Kara Hertzfeld received $92 in industry payments from 2016 to 2023
CMS Open Payments shows 4 general payments to Dr. Hertzfeld from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $46.
General payments to Dr. Hertzfeld by program year, 2016 to 2023
Companies that paid Dr. Hertzfeld the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kara Hertzfeld graduated from University of Cincinnati College of Medicine
Dr. Hertzfeld graduated from University of Cincinnati College of Medicine in 2005.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Kara Hertzfeld'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. Kara Hertzfeld
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. Kara Hertzfeld's NPI number?
Dr. Kara Hertzfeld's NPI number is 1174742472. It was assigned on April 25, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Kara Hertzfeld?
Dr. Kara Hertzfeld is a radiation oncologist in Toledo, Ohio. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Kara Hertzfeld practice?
Dr. Hertzfeld practices at 2142 N Cove Blvd, Toledo, OH 43606. Dr. Hertzfeld's primary practice is ProMedica Toledo Hospital Emergency Center in Toledo, Ohio. Dmand AI also links Dr. Hertzfeld to 2 hospitals and 1 medical group.
What is Dr. Kara Hertzfeld's office phone number?
The practice phone on file for Dr. Hertzfeld is (419) 593-0214.
What is Dr. Kara Hertzfeld's medical license number?
Dr. Hertzfeld holds Ohio license 35095467, one of the licenses on file in 2 states.
Which states has Dr. Kara Hertzfeld been licensed in?
Dmand AI has state licenses on file for Dr. Hertzfeld in Ohio and Michigan.
Which hospitals is Dr. Kara Hertzfeld affiliated with?
Dr. Hertzfeld is affiliated with ProMedica Toledo Hospital. Dmand AI links Dr. Hertzfeld to 2 more hospitals.
What medical group is Dr. Kara Hertzfeld part of?
Dr. Hertzfeld is linked to ProMedica Physicians. Dmand AI links Dr. Hertzfeld to 1 more medical group.
Does Dr. Kara Hertzfeld accept Medicare?
Yes. CMS data shows Dr. Hertzfeld billed Medicare for 1,826 services in 2024, and Dr. Hertzfeld accepts Medicare assignment.
How many Medicare patients does Dr. Kara Hertzfeld see?
CMS counts 148 Medicare patients who saw Dr. Hertzfeld in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. Kara Hertzfeld bill to Medicare?
In 2024, Dr. Hertzfeld's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and radiation oncology (77300).
Where did Dr. Kara Hertzfeld go to medical school?
Dr. Hertzfeld graduated from University of Cincinnati College of Medicine in 2005.
What drugs does Dr. Kara Hertzfeld prescribe most?
In 2024 Medicare Part D data, Dr. Hertzfeld's most prescribed drugs by claims were Mometasone Furoate and Ssd.
Has Dr. Kara Hertzfeld received payments from drug or device companies?
CMS Open Payments shows $92 in general payments to Dr. Hertzfeld from 3 companies from 2016 to 2023. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Kara Hertzfeld been practicing?
Dr. Hertzfeld graduated from medical school in 2005, 21 years ago.
Does Dr. Kara Hertzfeld do research?
Dmand AI links 1 publication to Dr. Hertzfeld.
Who does Dr. Kara Hertzfeld publish with?
Dr. Hertzfeld's most frequent co-authors are William L. Barrett, MD (1 shared paper) and Catherine C. Coombs, MD (1 shared paper).
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