Ethan K. Sim, PA-C
- Part D claims, 2024
- 147
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Industry payments
- $52
- Medical groups
- 2
- 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 Ethan Sim'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.
Ethan K. Sim is a physician assistant in Stanford, California
Ethan Sim practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Ethan Sim's NPI, 1114546488, was assigned on April 15, 2020. Ethan Sim holds California license 59743.
- NPI
- 1114546488NPI Registry (opens in a new tab)
- NPI enumeration date
- April 15, 2020
- NPI status
- Active
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Ethan K. Sim practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Ethan Sim'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
Ethan K. Sim is affiliated with 2 sites of care and 2 medical groups
Ethan Sim'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 Ethan Sim to 1 more hospital and 1 medical group, each named with a free account. Ethan Sim'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 Ethan K. Sim's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ethan Sim 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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Ethan K. Sim is one of 11,482 physician assistants in California
Physician assistant is Ethan Sim's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Ethan Sim is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Ethan Sim
Counts of physician assistants 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
Ethan K. Sim's patients have a median age of 62
Across all payers, Dmand AI patient panel data puts Ethan Sim's median patient age at 62, with 27% women.
Ethan Sim's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women27%
- Men73%
Source: Dmand AI Patient Panel Data
Ethan K. Sim wrote 147 Medicare Part D claims in 2024
In 2024, Ethan Sim wrote 147 Medicare Part D claims for 37 patients. 95% of them were for generic drugs.
Ethan Sim's Part D claims by kind of drug, 2024
- Generic140 claims95%
- Brand-name and other7 claims5%
Drug classes CMS tracks in Ethan Sim's Part D claims, 2024
- Antibiotics10%15 of 147 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Ethan K. Sim 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 Ethan Sim for performance year 2024, reported as part of a group.
Ethan Sim'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.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Ethan K. Sim received $52 in industry payments in 2025
CMS Open Payments shows 2 general payments to Ethan Sim from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $28.
Companies that paid Ethan Sim the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Ethan K. Sim'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Ethan K. Sim
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ethan K. Sim's NPI number?
Ethan K. Sim's NPI number is 1114546488. It was assigned on April 15, 2020, and it is active in the NPI Registry.
What does Ethan K. Sim specialize in?
Ethan K. Sim is a physician assistant in Stanford, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Ethan K. Sim practice?
Ethan Sim practices at 300 Pasteur Drive, Stanford, CA 94305. Ethan Sim's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Ethan Sim to 1 hospital and 1 medical group.
What is Ethan K. Sim's office phone number?
The practice phone on file for Ethan Sim is (650) 723-4000.
What is Ethan K. Sim's medical license number?
Ethan Sim holds California license 59743.
Which hospitals is Ethan K. Sim affiliated with?
Ethan Sim practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Ethan Sim to 1 more hospital.
What medical group is Ethan K. Sim part of?
Ethan Sim is linked to Stanford Health Care. Dmand AI links Ethan Sim to 1 more medical group.
What is Ethan K. Sim's MIPS score?
Ethan Sim's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Has Ethan K. Sim received payments from drug or device companies?
CMS Open Payments shows $52 in general payments to Ethan Sim from 2 companies from 2025 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Ethan K. Sim been practicing?
Ethan Sim graduated from medical school in 2021, 5 years ago.
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