Dr. Peter K. Tothy, MD
- Medicare services, 2024
- 154,078
- Medicare patients, 2024
- 798
- Part D claims, 2024
- 485
- Hospital affiliations
- 6
- Industry payments
- $39,013
- Practice address
- 1001 Calumet Ave, Dyer, IN 46311
- Practice phone
- Call (219) 924-8178
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwest Cancer Centers
Dyer, Indiana
Find Dr. Tothy'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. Peter K. Tothy is a hematologist and oncologist in Dyer, Indiana
Dr. Tothy practices at Northwest Cancer Centers in Dyer, Indiana.
Dr. Tothy's NPI, 1023157278, was assigned on February 5, 2007. Dr. Tothy graduated from Icahn School of Medicine at Mount Sinai in 1999. Dr. Tothy holds Indiana license 01065693A.
- NPI
- 1023157278NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698705242
- NPI enumeration date
- February 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (219) 924-8178
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Peter K. Tothy practices at Northwest Cancer Centers in Dyer, Indiana
Dr. Tothy's primary practice is Northwest Cancer Centers, at 1001 Calumet Ave, Dyer, IN 46311 in Lake County. The practice phone is (219) 924-8178.
- Northwest Cancer Centers1001 Calumet Ave, Dyer, IN 46311 · Lake CountyPhone(219) 924-8178
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Peter K. Tothy is affiliated with 9 sites of care and 2 medical groups
Dr. Tothy's primary practice is Northwest Cancer Centers in Dyer, Indiana. Dr. Tothy is also affiliated with Community Hospital. The medical group on file is Northwest Cancer Centers. Dmand AI also links Dr. Tothy to 5 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Peter K. Tothy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tothy practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Cancer Centers | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Peter K. Tothy is one of 224 hematologists and oncologists in Indiana
Hematology and oncology is Dr. Tothy's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Tothy is licensed in Indiana.
Specialties and state licenses
- Hematology and oncology, IndianaPrimary
Hematologists and oncologists near Dr. Tothy
Counts of hematologists and 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. Peter K. Tothy billed Medicare for 154,078 services in 2024
CMS data shows 154,078 Medicare services from Dr. Tothy across 71 procedure codes in 2024, for 798 Medicare patients. Medicare paid $2,351,125 for them.
Dr. Tothy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 90,2842024: 110,81523%
- Lab and pathology
- 2023: 29,9182024: 31,9737%
- Tests and treatments
- 2023: 3,5862024: 3,6532%
- Office and hospital visits
- 2023: 2,9032024: 3,27813%
- Surgery
- 2023: 2,6252024: 2,7746%
- Other services
- 2023: 6012024: 1,585164%
Where Dr. Tothy's Medicare services took place, 2024
- In an office153,731100%
- In a facility3470%
Dr. Tothy compared with the Indiana median for hematologists and oncologists, 2024
- Dr. Tothy
- Indiana median
- Medicare services
- 154,078vs 760202.7 times
- Medicare patients
- 798vs 2643.0 times
- Part D claims
- 275vs 42335% below
Medians across 215 hematologists and oncologists in Indiana with Dmand AI profiles that report each measure.
Dr. Tothy'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. Tothy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tothy and other hematologists and oncologists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Peter K. Tothy treated 798 Medicare patients in 2024, average age 75
CMS counts 798 Medicare patients who saw Dr. Tothy in 2024. The largest group is 65 to 74, with 348 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.82, 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. Tothy's median patient age at 70, with 63% women.
Dr. Tothy's Medicare patients by age, 2024
Dr. Tothy's Medicare patients by sex, 2024
- Women49862%
- Men30038%
Chronic conditions among Dr. Tothy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Cancer52%
- Diabetes33%
- Ischemic heart disease33%
- COPD28%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tothy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women63%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Peter K. Tothy wrote 485 Medicare Part D claims in 2024
In 2024, Dr. Tothy wrote 485 Medicare Part D claims for 193 patients. 68% of them were for generic drugs. CMS names the drug for 275 of them, across 7 drugs with 11 or more claims each, at $54,618 in total drug cost. In 2023, CMS named 404 claims across 15 drugs.
Dr. Tothy's Part D claims by kind of drug, 2024
- Generic331 claims68%
- Brand-name154 claims32%
Dr. Tothy'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4042024: 27532%
Drugs named by CMS: 7 in 2024, 15 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. Peter K. Tothy takes part in Medicare
Dr. Tothy 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. Peter K. Tothy received $39,013 in industry payments from 2016 to 2025
CMS Open Payments shows 1,383 general payments to Dr. Tothy from 94 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 67% of the total. AstraZeneca Pharmaceuticals LP paid the most, $3,583.
General payments to Dr. Tothy by program year, 2016 to 2025
General payments to Dr. Tothy by kind, 2016 to 2025
- Food and beverage$25,98067%
- Consulting fees$11,50630%
- Gifts$9482%
- Education$2981%
- Other$2551%
Companies that paid Dr. Tothy the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Peter K. Tothy graduated from Icahn School of Medicine at Mount Sinai
Dr. Tothy graduated from Icahn School of Medicine at Mount Sinai in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Peter K. Tothy'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 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) |
| 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. Peter K. Tothy
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. Peter K. Tothy's NPI number?
Dr. Peter K. Tothy's NPI number is 1023157278. It was assigned on February 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Peter K. Tothy?
Dr. Peter K. Tothy is a hematologist and oncologist in Dyer, Indiana. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Peter K. Tothy practice?
Dr. Tothy practices at 1001 Calumet Ave, Dyer, IN 46311. Dr. Tothy's primary practice is Northwest Cancer Centers in Dyer, Indiana. Dmand AI also links Dr. Tothy to 5 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Peter K. Tothy's office phone number?
The practice phone on file for Dr. Tothy is (219) 924-8178.
What is Dr. Peter K. Tothy's medical license number?
Dr. Tothy holds Indiana license 01065693A.
Which hospitals is Dr. Peter K. Tothy affiliated with?
Dr. Tothy is affiliated with Community Hospital. Dmand AI links Dr. Tothy to 5 more hospitals.
What medical group is Dr. Peter K. Tothy part of?
Dr. Tothy is linked to Northwest Cancer Centers. Dmand AI links Dr. Tothy to 1 more medical group.
Does Dr. Peter K. Tothy accept Medicare?
Yes. CMS data shows Dr. Tothy billed Medicare for 154,078 services in 2024, and Dr. Tothy accepts Medicare assignment.
How many Medicare patients does Dr. Peter K. Tothy see?
CMS counts 798 Medicare patients who saw Dr. Tothy in 2024, with an average age of 75.
What services does Dr. Peter K. Tothy bill to Medicare?
In 2024, Dr. Tothy's most billed Medicare services were injected or infused drug (J9271), injected or infused drug (J0185) and injected or infused drug (J9263).
Show 4 more questionsShow fewer questions
Where did Dr. Peter K. Tothy go to medical school?
Dr. Tothy graduated from Icahn School of Medicine at Mount Sinai in 1999.
What drugs does Dr. Peter K. Tothy prescribe most?
In 2024 Medicare Part D data, Dr. Tothy's most prescribed drugs by claims were Anastrozole, Tamoxifen Citrate and Eliquis.
Has Dr. Peter K. Tothy received payments from drug or device companies?
CMS Open Payments shows $39,013 in general payments to Dr. Tothy from 94 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Peter K. Tothy been practicing?
Dr. Tothy graduated from medical school in 1999, 27 years ago.
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