Diane Tan, PA-C
- Medicare services, 2024
- 204
- Medicare patients, 2024
- 175
- Part D claims, 2024
- 212
- Publications
- 1
- MIPS score, 2024
- 97
- Practice address
- 1115 S Sunset Ave, West Covina, CA 91790
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Queen of the Valley Hospital - Unit
Acute Care Hospital-Unit · West Covina, California
Find Diane Tan's professional email, personal email and mobile number
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Diane Tan is a physician assistant in West Covina, California
Diane Tan practices at Queen of the Valley Hospital - Unit in West Covina, California.
Diane Tan's NPI, 1699144618, was assigned on September 21, 2015. Diane Tan holds California license 52826.
- NPI
- 1699144618NPI Registry (opens in a new tab)
- NPI enumeration date
- September 21, 2015
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Diane Tan practices at Queen of the Valley Hospital - Unit in West Covina, California
Diane Tan's primary practice is Queen of the Valley Hospital - Unit, at 1115 S Sunset Ave, West Covina, CA 91790.
- Queen of the Valley Hospital - Unit1115 S Sunset Ave, West Covina, CA 91790
Source: Dmand AI Affiliation Data
Diane Tan is affiliated with 2 sites of care and 1 medical group
Diane Tan's primary practice is Queen of the Valley Hospital - Unit in West Covina, California. Diane Tan is also affiliated with Emanate Health Inter-Community Hospital. The medical group on file is Vituity.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Diane Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Diane Tan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Queen of the Valley Hospital - Unit | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Diane Tan is one of 11,482 physician assistants in California
Physician assistant is Diane Tan's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Diane Tan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Diane Tan is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists epilepsy among the conditions Diane Tan treats.
Physician assistants near Diane Tan
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
Diane Tan billed Medicare for 204 services in 2024
CMS data shows 204 Medicare services from Diane Tan across 4 procedure codes in 2024, for 175 Medicare patients. Medicare paid $19,008 for them. Every service was in a facility, such as a hospital, rather than an office.
Diane Tan's Medicare services by type, 2024
- Office and hospital visits175
- Tests and treatments29
Diane Tan compared with the California median for physician assistants, 2024
- Diane Tan
- California median
- Medicare services
- 204vs 204Close to median
- Medicare patients
- 175vs 10567% above
- Part D claims
- 80vs 24367% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Diane Tan'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 Diane Tan and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Diane Tan treated 175 Medicare patients in 2024, average age 70
CMS counts 175 Medicare patients who saw Diane Tan in 2024. The largest group is 65 to 74, with 57 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 72% are also on Medicaid. Their average risk score is 2.49, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Diane Tan's median patient age at 39, with 58% women.
Diane Tan's Medicare patients by age, 2024
Diane Tan's Medicare patients by sex, 2024
- Women9655%
- Men7945%
Chronic conditions among Diane Tan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes61%
- Chronic kidney disease47%
- Arthritis42%
- Heart failure35%
- Ischemic heart disease34%
- Mood disorders31%
Share of Medicare patients with each condition. A patient can have several.
Diane Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Diane Tan wrote 212 Medicare Part D claims in 2024
In 2024, Diane Tan wrote 212 Medicare Part D claims for 161 patients. 93% of them were for generic drugs. CMS names the drug for 80 of them, across 6 drugs with 11 or more claims each, at $443 in total drug cost.
Diane Tan's Part D claims by kind of drug, 2024
- Generic198 claims93%
- Brand-name and other14 claims7%
Diane Tan'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.
Drug classes CMS tracks in Diane Tan's Part D claims, 2024
- Opioids9%20 of 212 claims
- Antibiotics38%80 of 212 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Diane Tan scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Diane Tan for performance year 2024, reported as part of a group.
Diane Tan's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 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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Diane Tan has 1 publication on record
Dmand AI links 1 paper to Diane Tan.
Recent publications by Diane Tan
See who Diane Tan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Diane Tan works with, so you can find a warm path to the right physician assistants.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Diane Tan is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Diane Tan'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 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 | Clinician Public Reporting: Overall MIPS Performance (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 |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Diane Tan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Diane Tan's NPI number?
Diane Tan's NPI number is 1699144618. It was assigned on September 21, 2015, and it is active in the NPI Registry.
What does Diane Tan specialize in?
Diane Tan is a physician assistant in West Covina, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Diane Tan practice?
Diane Tan practices at 1115 S Sunset Ave, West Covina, CA 91790. Diane Tan's primary practice is Queen of the Valley Hospital - Unit in West Covina, California.
What is Diane Tan's medical license number?
Diane Tan holds California license 52826.
Which hospitals is Diane Tan affiliated with?
Diane Tan is affiliated with Emanate Health Inter-Community Hospital. Dmand AI links Diane Tan to 1 more hospital.
What medical group is Diane Tan part of?
Diane Tan is linked to Vituity.
Does Diane Tan accept Medicare?
Yes. CMS data shows Diane Tan billed Medicare for 204 services in 2024.
What is Diane Tan's MIPS score?
Diane Tan's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Diane Tan see?
CMS counts 175 Medicare patients who saw Diane Tan in 2024, with an average age of 70.
Is Diane Tan board certified?
Yes. Diane Tan is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 4 more questionsShow fewer questions
What services does Diane Tan bill to Medicare?
In 2024, Diane Tan's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
What drugs does Diane Tan prescribe most?
In 2024 Medicare Part D data, Diane Tan's most prescribed drugs by claims were Cephalexin, Ondansetron ODT and Amoxicillin-Clavulanate Potass.
How long has Diane Tan been practicing?
Diane Tan's NPI was assigned in 2015.
Does Diane Tan do research?
Dmand AI links 1 publication to Diane Tan.
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