Dr. Margaret Jiemin Zhou, MD
- Medicare services, 2024
- 97
- Medicare patients, 2024
- 112
- Part D claims, 2024
- 94
- Publications
- 27
- MIPS score, 2024
- 89
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zhou's professional email, personal email and mobile number
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Dr. Margaret Jiemin Zhou is a gastroenterologist in Stanford, California
Dr. Zhou practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Zhou's NPI, 1184157992, was assigned on April 7, 2017. Dr. Zhou graduated from UCSF School of Medicine in 2017. Dr. Zhou holds California license A169235.
- NPI
- 1184157992NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2365804267
- NPI enumeration date
- April 7, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margaret Jiemin Zhou practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Zhou's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Margaret Jiemin Zhou is affiliated with 2 sites of care and 2 medical groups
Dr. Zhou's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Zhou to 1 more hospital and 1 medical group, each named with a free account. Dr. Zhou's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Margaret Jiemin Zhou's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zhou practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret Jiemin Zhou is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Zhou's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Zhou is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Zhou is licensed in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Zhou
Counts of gastroenterologists 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. Margaret Jiemin Zhou billed Medicare for 97 services in 2024
CMS data shows 97 Medicare services from Dr. Zhou across 5 procedure codes in 2024, for 112 Medicare patients. Medicare paid $13,917 for them.
Dr. Zhou's Medicare services by type, 2024
- Office and hospital visits49
- Surgery48
Where Dr. Zhou's Medicare services took place, 2024
- In an office7072%
- In a facility2728%
Dr. Zhou compared with the California median for gastroenterologists, 2024
- Dr. Zhou
- California median
- Medicare services
- 97vs 58683% below
- Medicare patients
- 112vs 30263% below
- Part D claims
- 57vs 38085% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Zhou'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Zhou and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margaret Jiemin Zhou treated 112 Medicare patients in 2024, average age 72
CMS counts 112 Medicare patients who saw Dr. Zhou in 2024. The largest group is 65 to 74, with 52 patients. 73% of them have high blood pressure, and 71% have high cholesterol. 30% are also on Medicaid. Their average risk score is 1.67, 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. Zhou's median patient age at 55, with 56% women.
Dr. Zhou's Medicare patients by age, 2024
Dr. Zhou's Medicare patients by sex, 2024
- Women5246%
- Men6054%
Chronic conditions among Dr. Zhou's Medicare patients, 2024
- High blood pressure73%
- High cholesterol71%
- Arthritis40%
- Diabetes38%
- Chronic kidney disease33%
- Anxiety29%
- Ischemic heart disease27%
- Mood disorders26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zhou's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margaret Jiemin Zhou wrote 94 Medicare Part D claims in 2024
In 2024, Dr. Zhou wrote 94 Medicare Part D claims for 63 patients. 89% of them were for generic drugs. CMS names the drug for 57 of them, across 3 drugs with 11 or more claims each, at $943 in total drug cost. In 2020, CMS named 343 claims across 13 drugs.
Dr. Zhou's Part D claims by kind of drug, 2024
- Generic84 claims89%
- Brand-name and other10 claims11%
Dr. Zhou'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, 2020 to 2024
- 2020
- 2024
- Claims for drugs CMS names
- 2020: 3432024: 5783%
Drugs named by CMS: 3 in 2024, 13 in 2020.
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. Margaret Jiemin Zhou scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Zhou for performance year 2024, reported as part of a group. Dr. Zhou accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zhou as offering telehealth. CMS counts 172 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Zhou, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Zhou's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 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.
Where Dr. Zhou ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 88th percentile172 procedures
- Colonoscopy
- 56th percentile34 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Margaret Jiemin Zhou has 27 publications on record
Dmand AI links 27 papers to Dr. Zhou, published from 2012 to 2024. 2020 was the busiest year, with 5. The most frequent topics are Colonoscopy, Colorectal Neoplasms and Early Detection of Cancer. Dr. Zhou has published most often in Clin Gastroenterol Hepatol. Dr. Zhou's most frequent co-authors are John O'Brien Clarke, MD, Daniel Ezra Freedberg, MD and Uri Ladabaum, MD.
Dr. Zhou's papers by year, 2012 to 2024
Topics Dr. Zhou writes about most
- Colonoscopy
- Colorectal Neoplasms
- Early Detection of Cancer
- Esophageal Neoplasms
- Adenocarcinoma
- Adenoma
- Barrett Esophagus
- Helicobacter Infections
Dr. Zhou's most frequent co-authors
- John O'Brien Clarke, MD4 shared papers
- Daniel Ezra Freedberg, MD4 shared papers
- Uri Ladabaum, MD4 shared papers
Recent publications by Dr. Zhou
Clin Gastroenterol Hepatol
Clin Transl Gastroenterol
Clin Gastroenterol Hepatol
See who Dr. Zhou researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zhou works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Margaret Jiemin Zhou received $287,404 in industry payments from 2021 to 2025
CMS Open Payments shows 76 general payments to Dr. Zhou from 10 drug and device companies from 2021 to 2025. Consulting fees make up the largest share, 84% of the total. CapsoVision, Inc. paid the most, $241,601.
General payments to Dr. Zhou by program year, 2021 to 2025
General payments to Dr. Zhou by kind, 2021 to 2025
- Consulting fees$241,60184%
- Grants$37,50013%
- Travel and lodging$5,7802%
- Food and beverage$2,2851%
- Education$2390%
Companies that paid Dr. Zhou the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Margaret Jiemin Zhou graduated from UCSF School of Medicine
Dr. Zhou graduated from UCSF School of Medicine in 2017.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Margaret Jiemin Zhou accepts plans from 7 insurance carriers
Dr. Zhou is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
Plan types Dr. Zhou accepts, by number of carriers
- Medicare4
- PPO4
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Margaret Jiemin Zhou'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand 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)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 |
| 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. Margaret Jiemin Zhou
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. Margaret Jiemin Zhou's NPI number?
Dr. Margaret Jiemin Zhou's NPI number is 1184157992. It was assigned on April 7, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret Jiemin Zhou?
Dr. Margaret Jiemin Zhou is a gastroenterologist in Stanford, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Margaret Jiemin Zhou practice?
Dr. Zhou practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Zhou's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Zhou to 1 hospital and 1 medical group.
What is Dr. Margaret Jiemin Zhou's office phone number?
The practice phone on file for Dr. Zhou is (650) 723-4000.
What is Dr. Margaret Jiemin Zhou's medical license number?
Dr. Zhou holds California license A169235.
Which hospitals is Dr. Margaret Jiemin Zhou affiliated with?
Dr. Zhou practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Zhou to 1 more hospital.
What medical group is Dr. Margaret Jiemin Zhou part of?
Dr. Zhou is linked to Stanford Health Care. Dmand AI links Dr. Zhou to 1 more medical group.
Does Dr. Margaret Jiemin Zhou accept Medicare?
Yes. CMS data shows Dr. Zhou billed Medicare for 97 services in 2024, and Dr. Zhou accepts Medicare assignment.
Does Dr. Margaret Jiemin Zhou offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zhou as offering telehealth services.
What is Dr. Margaret Jiemin Zhou's MIPS score?
Dr. Zhou's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Margaret Jiemin Zhou see?
CMS counts 112 Medicare patients who saw Dr. Zhou in 2024, with an average age of 72.
Is Dr. Margaret Jiemin Zhou board certified?
Yes. Dr. Zhou is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Margaret Jiemin Zhou bill to Medicare?
In 2024, Dr. Zhou's most billed Medicare services were surgery: digestive system (43239), office visit, new patient (99205) and surgery: digestive system (45385).
Where did Dr. Margaret Jiemin Zhou go to medical school?
Dr. Zhou graduated from UCSF School of Medicine in 2017.
What drugs does Dr. Margaret Jiemin Zhou prescribe most?
In 2024 Medicare Part D data, Dr. Zhou's most prescribed drugs by claims were Peg 3350-Electrolyte, Omeprazole and Gavilyte-G.
Has Dr. Margaret Jiemin Zhou received payments from drug or device companies?
CMS Open Payments shows $287,404 in general payments to Dr. Zhou from 10 companies from 2021 to 2025. The largest total came from CapsoVision, Inc.
How long has Dr. Margaret Jiemin Zhou been practicing?
Dr. Zhou graduated from medical school in 2017, 9 years ago.
Does Dr. Margaret Jiemin Zhou do research?
Dmand AI links 27 publications to Dr. Zhou, published from 2012 to 2024.
Who does Dr. Margaret Jiemin Zhou publish with?
Dr. Zhou's most frequent co-authors are John O'Brien Clarke, MD (4 shared papers), Daniel Ezra Freedberg, MD (4 shared papers) and Uri Ladabaum, MD (4 shared papers).
What insurance does Dr. Margaret Jiemin Zhou accept?
Dr. Zhou is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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