Dr. Arthur Chyan, DO
- Medicare services, 2023
- 11
- Medicare patients, 2024
- 85
- MIPS score, 2024
- 99
- Hospital affiliations
- 2
- Medical groups
- 3
- Practice address
- 505 Parnassus Ave, Box 0296, San Francisco, CA 94143
- Practice phone
- Call (415) 353-2733
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Chyan's professional email, personal email and mobile number
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Dr. Arthur Chyan is an anesthesiologist in San Francisco, California
Dr. Chyan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Dr. Chyan's NPI, 1225490378, was assigned on March 27, 2016. Dr. Chyan holds Massachusetts license 283004.
- NPI
- 1225490378NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092126029
- NPI enumeration date
- March 27, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-2733
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Arthur Chyan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Dr. Chyan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Dr. Arthur Chyan is affiliated with 2 sites of care and 3 medical groups
Dr. Chyan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dr. Chyan is also affiliated with Brigham and Women's Hospital. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Chyan to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Arthur Chyan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chyan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Arthur Chyan is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Chyan's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Chyan is licensed in Massachusetts.
Specialties and state licenses
- Anesthesiology, MassachusettsPrimary
Anesthesiologists near Dr. Chyan
Counts of anesthesiologists 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. Arthur Chyan billed Medicare for 11 services in 2023
CMS data shows 11 Medicare services from Dr. Chyan across 1 procedure code in 2023, for 85 Medicare patients. Medicare paid $2,087 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chyan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Anesthesia
- 2022: 152023: 1127%
Dr. Chyan compared with the California median for anesthesiologists, 2023
- Dr. Chyan
- California median
- Medicare services
- 11vs 7285% below
- Medicare patients
- 85vs 14341% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Chyan's most billed Medicare procedure codes, 2023
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Arthur Chyan treated 85 Medicare patients in 2024, average age 71
CMS counts 85 Medicare patients who saw Dr. Chyan in 2024. The largest group is 65 to 74, with 36 patients. 72% of them have high blood pressure, and 66% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chyan's median patient age at 41, with 83% women.
Dr. Chyan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chyan's Medicare patients by sex, 2024
- Women4755%
- Men3845%
Chronic conditions among Dr. Chyan's Medicare patients, 2024
- High blood pressure72%
- High cholesterol66%
- Arthritis46%
- Mood disorders35%
- Chronic kidney disease32%
- Anxiety31%
- Cancer31%
- Depression31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chyan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women83%
- Men17%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Arthur Chyan scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Chyan for performance year 2024, reported as part of a group. Dr. Chyan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chyan's MIPS scores, performance year 2024
- 99of 100Final score
- 95of 100Quality
- 40of 100Improvement Activities
- 81of 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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Sources for Dr. Arthur Chyan'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) |
| 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) |
| 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. Arthur Chyan
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. Arthur Chyan's NPI number?
Dr. Arthur Chyan's NPI number is 1225490378. It was assigned on March 27, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Arthur Chyan?
Dr. Arthur Chyan is an anesthesiologist in San Francisco, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Arthur Chyan practice?
Dr. Chyan practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Chyan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. Chyan to 2 medical groups.
What is Dr. Arthur Chyan's office phone number?
The practice phone on file for Dr. Chyan is (415) 353-2733.
What is Dr. Arthur Chyan's medical license number?
Dr. Chyan holds Massachusetts license 283004.
Which hospitals is Dr. Arthur Chyan affiliated with?
Dr. Chyan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California. Dr. Chyan is also affiliated with Brigham and Women's Hospital.
What medical group is Dr. Arthur Chyan part of?
Dr. Chyan is linked to UCSF Pediatrics. Dmand AI links Dr. Chyan to 2 more medical groups.
Does Dr. Arthur Chyan accept Medicare?
Yes. CMS data shows Dr. Chyan billed Medicare for 11 services in 2023, and Dr. Chyan accepts Medicare assignment.
What is Dr. Arthur Chyan's MIPS score?
Dr. Chyan's MIPS final score for performance year 2024 is 99 out of 100, reported as part of a group.
How many Medicare patients does Dr. Arthur Chyan see?
CMS counts 85 Medicare patients who saw Dr. Chyan in 2024, with an average age of 71.
What services does Dr. Arthur Chyan bill to Medicare?
In 2023, Dr. Chyan's most billed Medicare services were anesthesia (00320).
How long has Dr. Arthur Chyan been practicing?
Dr. Chyan graduated from medical school in 2016, 10 years ago.
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