BreastContinuity of Patient CareDelivery of Health Care
Dr. Megumi Tomita, MD
NPI1740354331
- Part D claims, 2024
- 78
- Publications
- 3
- Industry payments
- $106
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
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Dr. Megumi Tomita is a hematologist and oncologist in Stockton, California
Dr. Tomita practices at Permanente Medical Group Inc in Stockton, California.
Dr. Tomita's NPI, 1740354331, was assigned on November 17, 2006. Dr. Tomita graduated from Other in 1998. Dr. Tomita's California license number on file is A85397.
NPI and contact details
- NPI
- 1740354331NPI Registry (opens in a new tab)
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Megumi Tomita practices at Permanente Medical Group Inc in Stockton, California
Dr. Tomita's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Megumi Tomita is affiliated with 2 sites of care and 1 medical group
Dr. Tomita's primary practice is Permanente Medical Group Inc in Stockton, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Tomita to 1 more group practice or clinic, named with a free account.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Megumi Tomita's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tomita practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Megumi Tomita is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Tomita's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Tomita is board certified in medical oncology by the American Board of Internal Medicine. Dmand AI has Dr. Tomita's licenses on file in 3 states: California, Connecticut and North Carolina.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Connecticut license
- North Carolina license
Hematologists and oncologists near Dr. Tomita
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. Megumi Tomita's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Tomita's median patient age at 64, with 98% women.
Dr. Tomita's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women98%
- Men2%
Source: Dmand AI Patient Panel Data
Dr. Megumi Tomita wrote 78 Medicare Part D claims in 2024
In 2024, Dr. Tomita wrote 78 Medicare Part D claims for 26 patients. 97% of them were for generic drugs. CMS names the drug for 30 of them, across 2 drugs with 11 or more claims each, at $832 in total drug cost. In 2023, CMS named 70 claims across 4 drugs.
Part D claims, 202478
Drugs named by CMS2
Total drug cost$832
Part D patients26
Dr. Tomita's Part D claims by kind of drug, 2024
- Generic76 claims97%
- Brand-name and other2 claims3%
Dr. Tomita'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: 702024: 3057%
Drugs named by CMS: 2 in 2024, 4 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
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Dr. Megumi Tomita has 3 publications on record
Dmand AI links 3 papers to Dr. Tomita, published from 2015 to 2022. Dr. Tomita's most frequent co-authors are Raymond W. Liu, MD, Raymond Liu, MD and Chun Fai Ng, MD.
Papers3
Years published2015 to 2022
Dr. Tomita's most frequent co-authors
Recent publications by Dr. Tomita
Amino Acid SubstitutionChick EmbryoChickens
See who Dr. Tomita researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tomita works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Megumi Tomita received $106 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Tomita from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Dompe US, Inc. paid the most, $106.
Companies that paid Dr. Tomita the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Megumi Tomita graduated from Other
Dr. Tomita graduated from Other in 1998.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Megumi Tomita accepts plans from 2 insurance carriers
Dr. Tomita is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Tomita accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Megumi Tomita'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Megumi Tomita
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. Megumi Tomita's NPI number?
Dr. Megumi Tomita's NPI number is 1740354331. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Megumi Tomita?
Dr. Megumi Tomita is a hematologist and oncologist in Stockton, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Megumi Tomita practice?
Dr. Tomita practices at 7373 West Ln, Stockton, CA 95210. Dr. Tomita's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Tomita to 1 group practice or clinic.
What is Dr. Megumi Tomita's office phone number?
The practice phone on file for Dr. Tomita is (209) 476-2000.
What is Dr. Megumi Tomita's medical license number?
Dr. Tomita's California license number on file is A85397, one of the licenses on file in 3 states.
Which states has Dr. Megumi Tomita been licensed in?
Dmand AI has state licenses on file for Dr. Tomita in California (2003 to 2025), Connecticut (2003 to 2006) and North Carolina (2001 to 2004).
What medical group is Dr. Megumi Tomita part of?
Dr. Tomita is linked to The Permanente Medical Group, Inc.
Is Dr. Megumi Tomita board certified?
Yes. Dr. Tomita is board certified in medical oncology by the American Board of Internal Medicine.
Where did Dr. Megumi Tomita go to medical school?
Dr. Tomita graduated from Other in 1998.
What drugs does Dr. Megumi Tomita prescribe most?
In 2024 Medicare Part D data, Dr. Tomita's most prescribed drugs by claims were Anastrozole and Tamoxifen Citrate.
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Has Dr. Megumi Tomita received payments from drug or device companies?
CMS Open Payments shows $106 in general payments to Dr. Tomita from 1 company from 2021 to 2021. The largest total came from Dompe US, Inc.
How long has Dr. Megumi Tomita been practicing?
Dr. Tomita graduated from medical school in 1998, 28 years ago.
Does Dr. Megumi Tomita do research?
Dmand AI links 3 publications to Dr. Tomita, published from 2015 to 2022.
Who does Dr. Megumi Tomita publish with?
Dr. Tomita's most frequent co-authors are Raymond W. Liu, MD (1 shared paper), Raymond Liu, MD (1 shared paper) and Chun Fai Ng, MD (1 shared paper).
What insurance does Dr. Megumi Tomita accept?
Dr. Tomita is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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