Dr. Gian P. Nhan, MD
- Medicare services, 2024
- 279
- Medicare patients, 2024
- 334
- MIPS score, 2024
- 93
- Hospital affiliations
- 1
- Industry payments
- $662
- 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. Nhan'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. Gian P. Nhan is an anesthesiologist in Duarte, California
Dr. Nhan practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Nhan's NPI, 1982770657, was assigned on November 27, 2006. Dr. Nhan graduated from Loma Linda University School Of Medicine in 1994. Dr. Nhan holds California license A64288.
- NPI
- 1982770657NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335108380
- NPI enumeration date
- November 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gian P. Nhan practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Nhan'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. Gian P. Nhan is affiliated with 3 sites of care and 3 medical groups
Dr. Nhan's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Nhan is also affiliated with Adventist Health White Memorial. The medical group on file is City of Hope. Dmand AI also links Dr. Nhan to 2 more medical groups 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. Gian P. Nhan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nhan practices, 2 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 |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gian P. Nhan is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Nhan's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Nhan is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Nhan's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Ohio license
Anesthesiologists near Dr. Nhan
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. Gian P. Nhan billed Medicare for 279 services in 2024
CMS data shows 279 Medicare services from Dr. Nhan across 10 procedure codes in 2024, for 334 Medicare patients. Medicare paid $31,195 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Nhan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1712024: 19514%
- Surgery
- 2023: 432024: 5835%
- Imaging
- 2023: 02024: 26
Dr. Nhan compared with the California median for anesthesiologists, 2024
- Dr. Nhan
- California median
- Medicare services
- 279vs 723.9 times
- Medicare patients
- 334vs 1432.3 times
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Nhan'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. Nhan and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gian P. Nhan treated 334 Medicare patients in 2024, average age 70
CMS counts 334 Medicare patients who saw Dr. Nhan in 2024. The largest group is 65 to 74, with 184 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.37, 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. Nhan's median patient age at 64, with 56% women.
Dr. Nhan's Medicare patients by age, 2024
Dr. Nhan's Medicare patients by sex, 2024
- Women17853%
- Men15647%
Chronic conditions among Dr. Nhan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Cancer54%
- Arthritis45%
- Diabetes40%
- Ischemic heart disease37%
- Chronic kidney disease28%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nhan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
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. Gian P. Nhan 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. Nhan for performance year 2024, reported as part of a group. Dr. Nhan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Nhan'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. Gian P. Nhan received $662 in industry payments from 2016 to 2025
CMS Open Payments shows 29 general payments to Dr. Nhan from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Pacira Pharmaceuticals Incorporated paid the most, $207. It also lists 1 research payment totaling $7,400 in 2025.
General payments to Dr. Nhan by program year, 2016 to 2025
General payments to Dr. Nhan by kind, 2016 to 2025
- Food and beverage$65198%
- Education$102%
Companies that paid Dr. Nhan 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. Gian P. Nhan graduated from Loma Linda University School Of Medicine
Dr. Nhan graduated from Loma Linda University School Of Medicine in 1994.
- Medical school
- Board certified in anesthesiology
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Gian P. Nhan accepts plans from 8 insurance carriers
Dr. Nhan is in network with 8 carriers, including Aetna, United Healthcare and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- HCSC
- Molina
Plan types Dr. Nhan accepts, by number of carriers
- Medicare5
- PPO4
- POS3
- EPO2
- HMO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gian P. Nhan'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) |
| 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) |
| 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. Gian P. Nhan
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. Gian P. Nhan's NPI number?
Dr. Gian P. Nhan's NPI number is 1982770657. It was assigned on November 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gian P. Nhan?
Dr. Gian P. Nhan is an anesthesiologist in Duarte, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gian P. Nhan practice?
Dr. Nhan practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Nhan's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Nhan to 2 medical groups and 1 other site.
What is Dr. Gian P. Nhan's office phone number?
The practice phone on file for Dr. Nhan is (800) 826-4673.
What is Dr. Gian P. Nhan's medical license number?
Dr. Nhan holds California license A64288, one of the licenses on file in 2 states.
Which states has Dr. Gian P. Nhan been licensed in?
Dmand AI has state licenses on file for Dr. Nhan in California (1998 to 2026) and Ohio (1995 to 2006).
Which hospitals is Dr. Gian P. Nhan affiliated with?
Dr. Nhan is affiliated with Adventist Health White Memorial.
What medical group is Dr. Gian P. Nhan part of?
Dr. Nhan is linked to City of Hope. Dmand AI links Dr. Nhan to 2 more medical groups.
Does Dr. Gian P. Nhan accept Medicare?
Yes. CMS data shows Dr. Nhan billed Medicare for 279 services in 2024, and Dr. Nhan accepts Medicare assignment.
What is Dr. Gian P. Nhan's MIPS score?
Dr. Nhan's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Gian P. Nhan see?
CMS counts 334 Medicare patients who saw Dr. Nhan in 2024, with an average age of 70.
Is Dr. Gian P. Nhan board certified?
Yes. Dr. Nhan is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Gian P. Nhan bill to Medicare?
In 2024, Dr. Nhan's most billed Medicare services were surgery: heart and blood vessels (36620), anesthesia (00731) and anesthesia (00520).
Where did Dr. Gian P. Nhan go to medical school?
Dr. Nhan graduated from Loma Linda University School Of Medicine in 1994.
Has Dr. Gian P. Nhan received payments from drug or device companies?
CMS Open Payments shows $662 in general payments to Dr. Nhan from 10 companies from 2016 to 2025. The largest total came from Pacira Pharmaceuticals Incorporated.
How long has Dr. Gian P. Nhan been practicing?
Dr. Nhan graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Gian P. Nhan accept?
Dr. Nhan is in network with 8 carriers, including Aetna, United Healthcare and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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