Katherine Hertzfeld
- Medicare patients, 2024
- 147
- Part D claims, 2024
- 133
- MIPS score, 2024
- 87
- Industry payments
- $17
- Affiliated sites
- 2
- Practice address
- 1415 Jefferson Avenue, Toledo, OH 43604
- Practice phone
- Call (419) 720-7883
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Nexus Health Care
FQHC - Main Site · Toledo, Ohio
Find Katherine 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.
Katherine Hertzfeld is a family nurse practitioner in Toledo, Ohio
Katherine Hertzfeld practices at Nexus Health Care in Toledo, Ohio.
Katherine Hertzfeld's NPI, 1568039485, was assigned on June 9, 2021. Katherine Hertzfeld holds Ohio license 0028646.
- NPI
- 1568039485NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931501665
- NPI enumeration date
- June 9, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (419) 720-7883
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Katherine Hertzfeld practices at Nexus Health Care in Toledo, Ohio
Katherine Hertzfeld's primary practice is Nexus Health Care, at 1415 Jefferson Avenue, Toledo, OH 43604 in Lucas County. The practice phone is (419) 720-7883.
- Nexus Health Care1415 Jefferson Avenue, Toledo, OH 43604 · Lucas CountyPhone(419) 720-7883
Source: Dmand AI Affiliation Data
Katherine Hertzfeld is affiliated with 2 sites of care and 2 medical groups
Katherine Hertzfeld's primary practice is Nexus Health Care in Toledo, Ohio. The medical group on file is The Little Clinic. Dmand AI also links Katherine Hertzfeld to 1 more group practice or clinic and 1 medical group, each named with a free account. Katherine Hertzfeld's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Katherine Hertzfeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Katherine Hertzfeld practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Nexus Health Care | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Katherine Hertzfeld is one of 7,779 family nurse practitioners in Ohio
Family is Katherine Hertzfeld's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Katherine Hertzfeld is licensed in Ohio.
Specialties and state licenses
- Family nurse practitioner, OhioPrimary
Family nurse practitioners near Katherine Hertzfeld
Counts of family nurse practitioners 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
Katherine Hertzfeld treated 147 Medicare patients in 2024, average age 74
CMS counts 147 Medicare patients who saw Katherine Hertzfeld in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Katherine Hertzfeld's median patient age at 45, with 55% women.
Katherine Hertzfeld's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Katherine Hertzfeld's Medicare patients by sex, 2024
- Women8457%
- Men6343%
Chronic conditions among Katherine Hertzfeld's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis51%
- Anxiety24%
- Diabetes24%
- Chronic kidney disease17%
- Ischemic heart disease17%
- Mood disorders16%
Share of Medicare patients with each condition. A patient can have several.
Katherine 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 45
Patient panel by sex, all payers
- Women55%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Katherine Hertzfeld wrote 133 Medicare Part D claims in 2024
In 2024, Katherine Hertzfeld wrote 133 Medicare Part D claims for 95 patients. 93% of them were for generic drugs.
Katherine Hertzfeld's Part D claims by kind of drug, 2024
- Generic124 claims93%
- Brand-name and other9 claims7%
Drug classes CMS tracks in Katherine Hertzfeld's Part D claims, 2024
- Antibiotics54%72 of 133 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Katherine Hertzfeld scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Katherine Hertzfeld for performance year 2024, reported as part of a group. Katherine Hertzfeld accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Katherine Hertzfeld's MIPS scores, performance year 2024
- 87of 100Final score
- 71.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 84of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Katherine Hertzfeld received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Katherine Hertzfeld from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $17.
Companies that paid Katherine Hertzfeld the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Katherine 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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)Clinician Public Reporting: Overall MIPS Performance (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 Katherine 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 Katherine Hertzfeld's NPI number?
Katherine Hertzfeld's NPI number is 1568039485. It was assigned on June 9, 2021, and it is active in the NPI Registry.
What does Katherine Hertzfeld specialize in?
Katherine Hertzfeld is a family nurse practitioner in Toledo, Ohio. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Katherine Hertzfeld practice?
Katherine Hertzfeld practices at 1415 Jefferson Avenue, Toledo, OH 43604. Katherine Hertzfeld's primary practice is Nexus Health Care in Toledo, Ohio. Dmand AI also links Katherine Hertzfeld to 1 group practice or clinic and 1 medical group.
What is Katherine Hertzfeld's office phone number?
The practice phone on file for Katherine Hertzfeld is (419) 720-7883.
What is Katherine Hertzfeld's medical license number?
Katherine Hertzfeld holds Ohio license 0028646.
What medical group is Katherine Hertzfeld part of?
Katherine Hertzfeld is linked to The Little Clinic. Dmand AI links Katherine Hertzfeld to 1 more medical group.
Does Katherine Hertzfeld accept Medicare?
Yes. CMS lists Katherine Hertzfeld as accepting Medicare assignment.
What is Katherine Hertzfeld's MIPS score?
Katherine Hertzfeld's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Katherine Hertzfeld see?
CMS counts 147 Medicare patients who saw Katherine Hertzfeld in 2024, with an average age of 74.
Has Katherine Hertzfeld received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Katherine Hertzfeld from 1 company from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Katherine Hertzfeld been practicing?
Katherine Hertzfeld graduated from medical school in 2020, 6 years ago.
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