Int J Radiat Oncol Biol Phys
AdenocarcinomaAnalysis of VarianceBrachytherapy
Dr. Rachel H. Chou, MD
NPI1740244094
- Medicare services, 2017
- 11
- Part D claims, 2024
- 183
- Publications
- 8
- Industry payments
- $743
- Affiliated sites
- 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
Find Dr. Chou's professional email, personal email and mobile number
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Dr. Rachel H. Chou is a radiation oncologist in Stockton, California
Dr. Chou practices at Permanente Medical Group Inc in Stockton, California.
Dr. Chou's NPI, 1740244094, was assigned on April 13, 2006. Dr. Chou graduated from Tufts University School Of Medicine in 1992. Dr. Chou holds California license G77213.
NPI and contact details
- NPI
- 1740244094NPI Registry (opens in a new tab)
- NPI enumeration date
- April 13, 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
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Rachel H. Chou practices at Permanente Medical Group Inc in Stockton, California
Dr. Chou'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. Rachel H. Chou is affiliated with 2 sites of care and 1 medical group
Dr. Chou'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. Chou 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. Rachel H. Chou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chou 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. Rachel H. Chou is one of 685 radiation oncologists in California
Radiation oncology is Dr. Chou's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Chou is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Chou's licenses on file in 4 states: California, Massachusetts, North Carolina and Virginia.
Specialties and state licenses
- Radiation oncology, CaliforniaPrimary
- Massachusetts license
- North Carolina license
- Virginia license
Radiation oncologists near Dr. Chou
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. Rachel H. Chou billed Medicare for 11 services in 2017
CMS data shows 11 Medicare services from Dr. Chou across 1 procedure code in 2017. Medicare paid $4,663 for them. Every service was in an office.
Medicare services, 201711
Paid by Medicare$4,663
Procedure codes1
Dr. Chou's Medicare services by type, 2016 to 2017
- 2016
- 2017
- Imaging
- 2016: 1522017: 1193%
- Other services
- 2016: 1442017: 0100%
Dr. Chou compared with the California median for radiation oncologists, 2017
- Dr. Chou
- California median
- Medicare services
- 11vs 1,44499% below
- Part D claims
- 89vs 322.8 times
Medians across 633 radiation oncologists in California with Dmand AI profiles that report each measure.
Dr. Chou's most billed Medicare procedure codes, 2017
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. Chou?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chou and other radiation oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Rachel H. Chou's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Chou's median patient age at 67, with 55% women.
Dr. Chou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women55%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Rachel H. Chou wrote 183 Medicare Part D claims in 2024
In 2024, Dr. Chou wrote 183 Medicare Part D claims for 75 patients. 82% of them were for generic drugs. CMS names the drug for 89 of them, across 4 drugs with 11 or more claims each, at $2,768 in total drug cost. In 2023, CMS named 55 claims across 3 drugs.
Part D claims, 2024183
Drugs named by CMS4
Total drug cost$2,768
Part D patients75
Dr. Chou's Part D claims by kind of drug, 2024
- Generic150 claims82%
- Brand-name and other33 claims18%
Dr. Chou'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. Chou's Part D claims, 2024
- Opioids9%16 of 183 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: 552024: 8962%
Drugs named by CMS: 4 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
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Dr. Rachel H. Chou has 8 publications on record
Dmand AI links 8 papers to Dr. Chou. The most frequent topics are Brachytherapy, Prostatic Neoplasms and Adenocarcinoma. Dr. Chou has published most often in Int J Radiat Oncol Biol Phys. Dr. Chou's most frequent co-authors are Allan Chen, MD, Derick Hon Man Lau, MD, PhD and Richard Barry Wilder, MD.
Papers8
Topics Dr. Chou writes about most
- Brachytherapy
- Prostatic Neoplasms
- Adenocarcinoma
- Antineoplastic Agents, Phytogenic
- Camptothecin
- Iodine Radioisotopes
- Palladium
- Prostate-Specific Antigen
Dr. Chou's most frequent co-authors
- Allan Chen, MD3 shared papers
- Derick Hon Man Lau, MD, PhD2 shared papers
- Richard Barry Wilder, MD2 shared papers
Recent publications by Dr. Chou
Dose Fractionation, RadiationHead and Neck NeoplasmsRadiotherapy
Crit Rev Oncol Hematol
Antineoplastic Agents, PhytogenicCamptothecinDNA Topoisomerases, Type I
Int J Radiat Oncol Biol Phys
Bone Marrow TransplantationChediak-Higashi SyndromeCognition Disorders
See who Dr. Chou researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chou 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. Rachel H. Chou received $743 in industry payments from 2016 to 2023
CMS Open Payments shows 30 general payments to Dr. Chou from 15 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, $171.
General payments to Dr. Chou by program year, 2016 to 2023
Companies that paid Dr. Chou 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. Rachel H. Chou has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chou, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Chou
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Rachel H. Chou graduated from Tufts University School Of Medicine
Dr. Chou graduated from Tufts University School Of Medicine in 1992. Dr. Chou is a member of ASCO and ASTRO.
- Medical school
- Board certified in radiation oncology
Source: Dmand AI Professional Profile Data
Dr. Rachel H. Chou accepts plans from 6 insurance carriers
Dr. Chou is in network with 6 carriers, including Elevance, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Elevance
- Kaiser Permanente
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- CMS Medicare
Plan types Dr. Chou accepts, by number of carriers
- Medicare5
- PPO4
- HMO2
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Rachel H. Chou'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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Rachel H. Chou
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. Rachel H. Chou's NPI number?
Dr. Rachel H. Chou's NPI number is 1740244094. It was assigned on April 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Rachel H. Chou?
Dr. Rachel H. Chou is a radiation oncologist in Stockton, California. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Rachel H. Chou practice?
Dr. Chou practices at 7373 West Ln, Stockton, CA 95210. Dr. Chou's primary practice is Permanente Medical Group Inc in Stockton, California. Dmand AI also links Dr. Chou to 1 group practice or clinic.
What is Dr. Rachel H. Chou's office phone number?
The practice phone on file for Dr. Chou is (209) 476-2000.
What is Dr. Rachel H. Chou's medical license number?
Dr. Chou holds California license G77213, one of the licenses on file in 4 states.
Which states has Dr. Rachel H. Chou been licensed in?
Dmand AI has state licenses on file for Dr. Chou in California (1993 to 2027), Massachusetts (1996 to 2007), North Carolina (1999 to 2003) and Virginia (1999 to 2002).
What medical group is Dr. Rachel H. Chou part of?
Dr. Chou is linked to The Permanente Medical Group, Inc.
Does Dr. Rachel H. Chou accept Medicare?
Yes. CMS data shows Dr. Chou billed Medicare for 11 services in 2017.
Is Dr. Rachel H. Chou board certified?
Yes. Dr. Chou is board certified in radiation oncology by the American Board of Radiology.
What services does Dr. Rachel H. Chou bill to Medicare?
In 2017, Dr. Chou's most billed Medicare services were radiation oncology (77290).
Show 7 more questionsShow fewer questions
Where did Dr. Rachel H. Chou go to medical school?
Dr. Chou graduated from Tufts University School Of Medicine in 1992.
What drugs does Dr. Rachel H. Chou prescribe most?
In 2024 Medicare Part D data, Dr. Chou's most prescribed drugs by claims were Ssd, Mometasone Furoate and Tamsulosin HCl.
Has Dr. Rachel H. Chou received payments from drug or device companies?
CMS Open Payments shows $743 in general payments to Dr. Chou from 15 companies from 2016 to 2023. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Rachel H. Chou been practicing?
Dr. Chou graduated from medical school in 1992, 34 years ago.
Does Dr. Rachel H. Chou do research?
Dmand AI links 8 publications to Dr. Chou.
Who does Dr. Rachel H. Chou publish with?
Dr. Chou's most frequent co-authors are Allan Chen, MD (3 shared papers), Derick Hon Man Lau, MD, PhD (2 shared papers) and Richard Barry Wilder, MD (2 shared papers).
What insurance does Dr. Rachel H. Chou accept?
Dr. Chou is in network with 6 carriers, including Elevance, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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