Ann Ni, PA-C
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 120
- MIPS score, 2024
- 100
- Hospital affiliations
- 2
- Industry payments
- $761
- 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 Ann Ni'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.
Ann Ni is a physician assistant in Stanford, California
Ann Ni practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Ann Ni's NPI, 1871112607, was assigned on April 12, 2020. Ann Ni holds California license 66355.
- NPI
- 1871112607NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042630329
- NPI enumeration date
- April 12, 2020
- 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
- 32
- Medical school graduation
- 2020
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Ann Ni practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Ann Ni'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
Ann Ni is affiliated with 2 sites of care and 2 medical groups
Ann Ni'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 Ann Ni to 1 more hospital and 1 medical group, each named with a free account. Ann Ni'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 Ann Ni's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ann Ni 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
For health IT teams
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Ann Ni is one of 11,482 physician assistants in California
Physician assistant is Ann Ni's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Ann Ni is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Ann Ni
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
Ann Ni treated 12 Medicare patients in 2024, average age 71
CMS counts 12 Medicare patients who saw Ann Ni in 2024. The largest group is under 65, with 0 patients. 75% of them have arthritis. Their average risk score is 0.88, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ann Ni's median patient age at 59, with 34% women.
Ann Ni's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Ann Ni's Medicare patients, 2024
- Arthritis75%
Share of Medicare patients with each condition. A patient can have several.
Ann Ni's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women34%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ann Ni wrote 120 Medicare Part D claims in 2024
In 2024, Ann Ni wrote 120 Medicare Part D claims for 35 patients. 98% of them were for generic drugs.
Ann Ni's Part D claims by kind of drug, 2024
- Generic118 claims98%
- Brand-name and other2 claims2%
Drug classes CMS tracks in Ann Ni's Part D claims, 2024
- Opioids21%25 of 120 claims
- Antibiotics33%39 of 120 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
Ann Ni scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Ann Ni for performance year 2024, reported through an alternative payment model (APM). Ann Ni accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ann Ni as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Ann Ni's MIPS scores, performance year 2024
- 100of 100Final score
- 85.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Ann Ni received $761 in industry payments in 2025
CMS Open Payments shows 6 general payments to Ann Ni from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Davol Inc. paid the most, $385.
Companies that paid Ann Ni 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 Ann Ni'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | 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) |
| 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 Ann Ni
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ann Ni's NPI number?
Ann Ni's NPI number is 1871112607. It was assigned on April 12, 2020, and it is active in the NPI Registry.
What does Ann Ni specialize in?
Ann Ni is a physician assistant in Stanford, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Ann Ni practice?
Ann Ni practices at 300 Pasteur Drive, Stanford, CA 94305. Ann Ni's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Ann Ni to 1 hospital and 1 medical group.
What is Ann Ni's office phone number?
The practice phone on file for Ann Ni is (650) 723-4000.
What is Ann Ni's medical license number?
Ann Ni holds California license 66355, one of 2 state licenses on file.
Which hospitals is Ann Ni affiliated with?
Ann Ni practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Ann Ni to 1 more hospital.
What medical group is Ann Ni part of?
Ann Ni is linked to Stanford Health Care. Dmand AI links Ann Ni to 1 more medical group.
Does Ann Ni accept Medicare?
Yes. CMS lists Ann Ni as accepting Medicare assignment.
Does Ann Ni offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Ann Ni as offering telehealth services.
What is Ann Ni's MIPS score?
Ann Ni's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Ann Ni see?
CMS counts 12 Medicare patients who saw Ann Ni in 2024, with an average age of 71.
Has Ann Ni received payments from drug or device companies?
CMS Open Payments shows $761 in general payments to Ann Ni from 3 companies from 2025 to 2025. The largest total came from Davol Inc.
How long has Ann Ni been practicing?
Ann Ni graduated from medical school in 2020, 6 years ago.
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