Dr. Tanya B. Dorff, MD
- Medicare services, 2024
- 1,356
- Medicare patients, 2024
- 517
- Part D claims, 2024
- 1,464
- Publications
- 100
- Clinical trials
- 10
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Dorff'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. Tanya B. Dorff is a medical oncologist in Duarte, California
Dr. Dorff practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Dorff's NPI, 1508879115, was assigned on August 14, 2006. Dr. Dorff graduated from David Geffen School of Medicine at UCLA in 2000. Dr. Dorff holds California license A82669.
- NPI
- 1508879115NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486658804
- NPI enumeration date
- August 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tanya B. Dorff practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Dorff's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Tanya B. Dorff is affiliated with 4 sites of care and 1 medical group
Dr. Dorff's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Dorff is also affiliated with Eisenhower Health. The medical group on file is City of Hope. Dmand AI also links Dr. Dorff to 1 more home health agency and 1 other site, each named with a free account.
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. Tanya B. Dorff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dorff practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tanya B. Dorff is one of 415 medical oncologists in California
Medical oncology is Dr. Dorff's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Dorff is board certified in medical oncology by the American Board of Internal Medicine. Dr. Dorff is licensed in California.
Specialties and state licenses
- Medical oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic anemia, fluid and electrolyte imbalances, lung cancer, multiple myeloma and prostate cancer among the conditions Dr. Dorff treats.
Medical oncologists near Dr. Dorff
Counts of medical 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. Tanya B. Dorff billed Medicare for 1,356 services in 2024
CMS data shows 1,356 Medicare services from Dr. Dorff across 8 procedure codes in 2024, for 517 Medicare patients. Medicare paid $100,857 for them.
Dr. Dorff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3582024: 1,3094%
- Other services
- 2023: 02024: 47
Where Dr. Dorff's Medicare services took place, 2024
- In an office14411%
- In a facility1,21289%
Dr. Dorff compared with the California median for medical oncologists, 2024
- Dr. Dorff
- California median
- Medicare services
- 1,356vs 4962.7 times
- Medicare patients
- 517vs 1543.4 times
- Part D claims
- 1,242vs 1448.6 times
Medians across 358 medical oncologists in California with Dmand AI profiles that report each measure.
Dr. Dorff'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. Dorff?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dorff and other medical oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tanya B. Dorff treated 517 Medicare patients in 2024, average age 75
CMS counts 517 Medicare patients who saw Dr. Dorff in 2024. The largest group is 65 to 74, with 248 patients. 75% of them have cancer, and 74% have high cholesterol. 15% are also on Medicaid. Their average risk score is 2.28, 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. Dorff's median patient age at 74, with 4% women.
Dr. Dorff's Medicare patients by age, 2024
Dr. Dorff's Medicare patients by sex, 2024
- Women112%
- Men50698%
Chronic conditions among Dr. Dorff's Medicare patients, 2024
- Cancer75%
- High cholesterol74%
- High blood pressure72%
- Ischemic heart disease37%
- Arthritis36%
- Diabetes31%
- Chronic kidney disease27%
- Atrial fibrillation19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dorff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women4%
- Men96%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tanya B. Dorff wrote 1,464 Medicare Part D claims in 2024
In 2024, Dr. Dorff wrote 1,464 Medicare Part D claims for 204 patients. 47% of them were for generic drugs. CMS names the drug for 1,242 of them, across 15 drugs with 11 or more claims each, at $6,518,122 in total drug cost. In 2023, CMS named 1,094 claims across 18 drugs.
Dr. Dorff's Part D claims by kind of drug, 2024
- Generic695 claims47%
- Brand-name769 claims53%
Dr. Dorff'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. Dorff's Part D claims, 2024
- Opioids2%34 of 1,464 claims
- Antibiotics1%12 of 1,464 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: 1,0942024: 1,24214%
Drugs named by CMS: 15 in 2024, 18 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
Dr. Tanya B. Dorff scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Dorff for performance year 2024, reported as part of a group. Dr. Dorff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dorff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Dorff's MIPS scores, performance year 2024
- 93of 100Final score
- 78.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 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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Dr. Tanya B. Dorff has 100 publications on record
Dmand AI links 100 papers to Dr. Dorff, published from 2009 to 2025. 2024 was the busiest year, with 13. The most frequent topics are Prostatic Neoplasms, Androgen Antagonists and Prostatic Neoplasms, Castration-Resistant. Dr. Dorff has published most often in Clin Genitourin Cancer. Dr. Dorff's most frequent co-authors are Sumanta K. Pal, MD, Abhishek Tripathi, MD and Rana Ramzi McKay, MD.
Dr. Dorff's papers by year, 2016 to 2025
Topics Dr. Dorff writes about most
- Prostatic Neoplasms
- Androgen Antagonists
- Prostatic Neoplasms, Castration-Resistant
- Kidney Neoplasms
- Antineoplastic Combined Chemotherapy Protocols
- Neoplasm Metastasis
- Prostate-Specific Antigen
- Carcinoma, Renal Cell
Dr. Dorff's most frequent co-authors
- Sumanta K. Pal, MD27 shared papers
- Abhishek Tripathi, MD16 shared papers
- Rana Ramzi McKay, MD12 shared papers
Recent publications by Dr. Dorff
Curr Treat Options Oncol
See who Dr. Dorff researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dorff works with, so you can find a warm path to the right medical oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Tanya B. Dorff has worked on 10 clinical trials
Dmand AI links Dr. Dorff to 10 clinical trials, 5 of them phase 2 studies. 5 are still active or recruiting. Conditions studied include Prostatic Neoplasms, Prostatic Diseases and Urinary Bladder Neoplasms. University of Southern California sponsors the most, 6.
Clinical trials with Dr. Dorff by phase
- 2Phase 1: 2 trials
- 5Phase 2: 5 trials
- NonePhase 3: no trials
- NonePhase 4: no trials
Conditions in Dr. Dorff's trials
- Prostatic Neoplasms
- Prostatic Diseases
- Urinary Bladder Neoplasms
- Carcinoma, Renal Cell
Investigators on the most trials with Dr. Dorff
Recent clinical trials with Dr. Dorff
Talazoparib With Androgen Deprivation Therapy and Abiraterone for the Treatment of Castration Sensitive Prostate Cancer (opens in a new tab)
PSCA-CAR T Cells in Treating Patients With PSCA+ Metastatic Castration Resistant Prostate Cancer (opens in a new tab)
Enzalutamide With or Without Radium Ra 223 Dichloride in Patients With Metastatic, Castration-Resistant Prostate Cancer (opens in a new tab)
sEphB4-HSA Before Surgery in Treating Patients With Bladder Cancer, Prostate Cancer, or Kidney Cancer (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Tanya B. Dorff received $238,623 in industry payments from 2016 to 2025
CMS Open Payments shows 360 general payments to Dr. Dorff from 37 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 57% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $62,278. It also lists 36 research payments totaling $44,419 from 2020 to 2025.
General payments to Dr. Dorff by program year, 2016 to 2025
General payments to Dr. Dorff by kind, 2016 to 2025
- Consulting fees$135,30257%
- Speaker and faculty fees$57,13024%
- Travel and lodging$21,4239%
- Food and beverage$11,8535%
- Other$12,1215%
Companies that paid Dr. Dorff 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. Tanya B. Dorff has 1 award and honors on record
Dmand AI lists 1 award for Dr. Dorff, most recently Top Doctors:LA Area in 2013.
Awards and honors for Dr. Dorff
- 2013
- Top Doctors:LA Area
Source: Dmand AI Professional Profile Data
Dr. Tanya B. Dorff graduated from David Geffen School of Medicine at UCLA
Dr. Dorff graduated from David Geffen School of Medicine at UCLA in 2000. Dr. Dorff is a member of ASCO.
- Medical school
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Tanya B. Dorff accepts plans from 9 insurance carriers
Dr. Dorff is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- LA Care
- Regence Health Plans
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Dorff accepts, by number of carriers
- Medicare8
- PPO6
- HMO4
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Tanya B. Dorff'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)Clinician Public Reporting: Overall MIPS Performance (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| 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. Tanya B. Dorff
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. Tanya B. Dorff's NPI number?
Dr. Tanya B. Dorff's NPI number is 1508879115. It was assigned on August 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Tanya B. Dorff?
Dr. Tanya B. Dorff is a medical oncologist in Duarte, California. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Tanya B. Dorff practice?
Dr. Dorff practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Dorff's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Dorff to 1 home health agency and 1 other site.
What is Dr. Tanya B. Dorff's office phone number?
The practice phone on file for Dr. Dorff is (800) 826-4673.
What is Dr. Tanya B. Dorff's medical license number?
Dr. Dorff holds California license A82669.
Which hospitals is Dr. Tanya B. Dorff affiliated with?
Dr. Dorff is affiliated with Eisenhower Health.
What medical group is Dr. Tanya B. Dorff part of?
Dr. Dorff is linked to City of Hope.
Does Dr. Tanya B. Dorff accept Medicare?
Yes. CMS data shows Dr. Dorff billed Medicare for 1,356 services in 2024, and Dr. Dorff accepts Medicare assignment.
Does Dr. Tanya B. Dorff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dorff as offering telehealth services.
What is Dr. Tanya B. Dorff's MIPS score?
Dr. Dorff's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Tanya B. Dorff see?
CMS counts 517 Medicare patients who saw Dr. Dorff in 2024, with an average age of 75.
Is Dr. Tanya B. Dorff board certified?
Yes. Dr. Dorff is board certified in medical oncology by the American Board of Internal Medicine.
What services does Dr. Tanya B. Dorff bill to Medicare?
In 2024, Dr. Dorff's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).
Where did Dr. Tanya B. Dorff go to medical school?
Dr. Dorff graduated from David Geffen School of Medicine at UCLA in 2000.
What drugs does Dr. Tanya B. Dorff prescribe most?
In 2024 Medicare Part D data, Dr. Dorff's most prescribed drugs by claims were Orgovyx, Abiraterone Acetate and Nubeqa.
Has Dr. Tanya B. Dorff received payments from drug or device companies?
CMS Open Payments shows $238,623 in general payments to Dr. Dorff from 37 companies from 2016 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Tanya B. Dorff been practicing?
Dr. Dorff graduated from medical school in 2000, 26 years ago.
Does Dr. Tanya B. Dorff do research?
Dmand AI links 100 publications to Dr. Dorff, published from 2009 to 2025. Dr. Dorff has worked on 10 clinical trials.
Who does Dr. Tanya B. Dorff publish with?
Dr. Dorff's most frequent co-authors are Sumanta K. Pal, MD (27 shared papers), Abhishek Tripathi, MD (16 shared papers) and Rana Ramzi McKay, MD (12 shared papers).
What insurance does Dr. Tanya B. Dorff accept?
Dr. Dorff is in network with 9 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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