AndrogensGene Expression RegulationInsulin-Like Growth Factor I
Dr. Sienmi Du, MD, PhD
NPI1447711320PAC ID2668889726
- Part D claims, 2024
- 138
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $69
- Medical group
- 1
- Practice address
- 2920 Telegraph Ave, Berkeley, CA 94705
- Practice phone
- Call (510) 724-4435
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Contra Costa Medical Group for Women, Inc.
Berkeley, California
Find Dr. Du'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. Sienmi Du is an OB-GYN in Berkeley, California
Dr. Du practices at Contra Costa Medical Group for Women, Inc. in Berkeley, California.
Dr. Du's NPI, 1447711320, was assigned on March 25, 2019. Dr. Du graduated from University of Central Florida College of Medicine in 2019. Dr. Du holds California license 1447711320.
NPI and contact details
- NPI
- 1447711320NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668889726
- NPI enumeration date
- March 25, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 724-4435
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sienmi Du practices at Contra Costa Medical Group for Women, Inc. in Berkeley, California
Dr. Du's primary practice is Contra Costa Medical Group for Women, Inc., at 2920 Telegraph Ave, Berkeley, CA 94705 in Alameda County. The practice phone is (510) 724-4435.
- Contra Costa Medical Group for Women, Inc.2920 Telegraph Ave, Berkeley, CA 94705 · Alameda CountyPhone(510) 724-4435
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Sienmi Du is affiliated with 3 sites of care and 1 medical group
Dr. Du's primary practice is Contra Costa Medical Group for Women, Inc. in Berkeley, California. Dr. Du is also affiliated with Alta Bates Summit Medical Center | Alta Bates Campus. The medical group on file is UCSF Benioff Children’s Physicians. Dmand AI also links Dr. Du to 1 more group practice or clinic, named with a free account.
Contra Costa Medical Group for Women, Inc.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Sienmi Du's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Du practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Medical Group for Women, Inc. | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sienmi Du is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Du's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dmand AI has Dr. Du's licenses on file in 2 states: California and Louisiana.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- Louisiana license
OB-GYNs near Dr. Du
Counts of OB-GYNs 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. Sienmi Du's patients have a median age of 45
Across all payers, Dmand AI patient panel data puts Dr. Du's median patient age at 45, with 92% women.
Dr. Du'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
- Women92%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Sienmi Du wrote 138 Medicare Part D claims in 2024
In 2024, Dr. Du wrote 138 Medicare Part D claims for 35 patients. 81% of them were for generic drugs. CMS names the drug for 55 of them, across 4 drugs with 11 or more claims each, at $6,515 in total drug cost.
Part D claims, 2024138
Drugs named by CMS4
Total drug cost$6,515
Part D patients35
Dr. Du's Part D claims by kind of drug, 2024
- Generic112 claims81%
- Brand-name and other26 claims19%
Dr. Du'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. Du's Part D claims, 2024
- Opioids9%13 of 138 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Sienmi Du offers telehealth to Medicare patients
Dr. Du accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Du as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of the uterus: 1 to 10 procedures (CMS shows small counts as a range)
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Sienmi Du has 5 publications on record
Dmand AI links 5 papers to Dr. Du, published from 2010 to 2014. 2010 was the busiest year, with 2. Dr. Du's most frequent co-authors are Rhonda Renee Voskuhl, MD and Mario A. Mangiardi, MD.
Papers5
Years published2010 to 2014
Dr. Du's papers by year, 2010 to 2014
Dr. Du's most frequent co-authors
Recent publications by Dr. Du
See who Dr. Du researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Du works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sienmi Du received $69 in industry payments from 2024 to 2025
CMS Open Payments shows 3 general payments to Dr. Du from 3 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Adaptive Biotechnologies Corporation paid the most, $28.
General payments to Dr. Du by program year, 2024 to 2025
Companies that paid Dr. Du the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sienmi Du graduated from University of Central Florida College of Medicine
Dr. Du graduated from University of Central Florida College of Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Sienmi Du'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 |
| 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. Sienmi Du
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. Sienmi Du's NPI number?
Dr. Sienmi Du's NPI number is 1447711320. It was assigned on March 25, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Sienmi Du?
Dr. Sienmi Du is an OB-GYN in Berkeley, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Sienmi Du practice?
Dr. Du practices at 2920 Telegraph Ave, Berkeley, CA 94705. Dr. Du's primary practice is Contra Costa Medical Group for Women, Inc. in Berkeley, California. Dmand AI also links Dr. Du to 1 group practice or clinic.
What is Dr. Sienmi Du's office phone number?
The practice phone on file for Dr. Du is (510) 724-4435.
What is Dr. Sienmi Du's medical license number?
Dr. Du holds California license 1447711320, one of the licenses on file in 2 states.
Which states has Dr. Sienmi Du been licensed in?
Dmand AI has state licenses on file for Dr. Du in California and Louisiana (2024 to 2025).
Which hospitals is Dr. Sienmi Du affiliated with?
Dr. Du is affiliated with Alta Bates Summit Medical Center | Alta Bates Campus.
What medical group is Dr. Sienmi Du part of?
Dr. Du is linked to UCSF Benioff Children’s Physicians.
Does Dr. Sienmi Du accept Medicare?
Yes. CMS lists Dr. Du as accepting Medicare assignment.
Does Dr. Sienmi Du offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Du as offering telehealth services.
Show 6 more questionsShow fewer questions
Where did Dr. Sienmi Du go to medical school?
Dr. Du graduated from University of Central Florida College of Medicine in 2019.
What drugs does Dr. Sienmi Du prescribe most?
In 2024 Medicare Part D data, Dr. Du's most prescribed drugs by claims were Ibuprofen, Premarin and Oxycodone HCl.
Has Dr. Sienmi Du received payments from drug or device companies?
CMS Open Payments shows $69 in general payments to Dr. Du from 3 companies from 2024 to 2025. The largest total came from Adaptive Biotechnologies Corporation.
How long has Dr. Sienmi Du been practicing?
Dr. Du graduated from medical school in 2019, 7 years ago.
Does Dr. Sienmi Du do research?
Dmand AI links 5 publications to Dr. Du, published from 2010 to 2014.
Who does Dr. Sienmi Du publish with?
Dr. Du's most frequent co-authors are Rhonda Renee Voskuhl, MD (4 shared papers) and Mario A. Mangiardi, MD (1 shared paper).
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