Dr. Daniel W. Chyu, MD
- Part D claims, 2024
- 4,241
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State license
- 1
- Practice address
- 710 Lawrence Expy, Santa Clara, CA 95051
- Practice phone
- Call (408) 851-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Santa Clara, California
Find Dr. Chyu'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. Daniel W. Chyu is an internist in Santa Clara, California
Dr. Chyu practices at Permanente Medical Group Inc in Santa Clara, California.
Dr. Chyu's NPI, 1043398548, was assigned on November 1, 2006. Dr. Chyu graduated from New York University School of Medicine in 2000. Dr. Chyu holds California license A76590.
- NPI
- 1043398548NPI Registry (opens in a new tab)
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (408) 851-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Daniel W. Chyu practices at Permanente Medical Group Inc in Santa Clara, California
Dr. Chyu's primary practice is Permanente Medical Group Inc, at 710 Lawrence Expy, Santa Clara, CA 95051 in Santa Clara County. The practice phone is (408) 851-1000.
- Permanente Medical Group Inc710 Lawrence Expy, Santa Clara, CA 95051 · Santa Clara CountyPhone(408) 851-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daniel W. Chyu is affiliated with 3 sites of care and 1 medical group
Dr. Chyu's primary practice is Permanente Medical Group Inc in Santa Clara, California. Dr. Chyu is also affiliated with San Jose Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chyu to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Daniel W. Chyu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chyu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Daniel W. Chyu is one of 16,751 internists in California
Internal medicine is Dr. Chyu's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chyu is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chyu is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists contact dermatitis among the conditions Dr. Chyu treats.
Internists near Dr. Chyu
Counts of internists 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. Daniel W. Chyu's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Chyu's median patient age at 58, with 27% women.
Dr. Chyu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women27%
- Men72%
Source: Dmand AI Patient Panel Data
Dr. Daniel W. Chyu wrote 4,241 Medicare Part D claims in 2024
In 2024, Dr. Chyu wrote 4,241 Medicare Part D claims for 680 patients. 93% of them were for generic drugs. CMS names the drug for 3,774 of them, across 65 drugs with 11 or more claims each, at $94,133 in total drug cost. In 2023, CMS named 3,125 claims across 58 drugs.
Dr. Chyu's Part D claims by kind of drug, 2024
- Generic3,939 claims93%
- Brand-name269 claims6%
- Other33 claims1%
Dr. Chyu'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 Dr. Chyu's Part D claims, 2024
- Opioids1%60 of 4,241 claims
- Antibiotics1%58 of 4,241 claims
- Antipsychotics, patients 65 and over0%15 of 4,241 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,1252024: 3,77421%
Drugs named by CMS: 65 in 2024, 58 in 2023.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Daniel W. Chyu has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chyu, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Chyu
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Daniel W. Chyu graduated from New York University School of Medicine
Dr. Chyu graduated from New York University School of Medicine in 2000.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Daniel W. Chyu accepts plans from 2 insurance carriers
Dr. Chyu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chyu accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Daniel W. Chyu'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Daniel W. Chyu
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. Daniel W. Chyu's NPI number?
Dr. Daniel W. Chyu's NPI number is 1043398548. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel W. Chyu?
Dr. Daniel W. Chyu is an internist in Santa Clara, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel W. Chyu practice?
Dr. Chyu practices at 710 Lawrence Expy, Santa Clara, CA 95051. Dr. Chyu's primary practice is Permanente Medical Group Inc in Santa Clara, California. Dmand AI also links Dr. Chyu to 1 group practice or clinic.
What is Dr. Daniel W. Chyu's office phone number?
The practice phone on file for Dr. Chyu is (408) 851-1000.
What is Dr. Daniel W. Chyu's medical license number?
Dr. Chyu holds California license A76590.
Which hospitals is Dr. Daniel W. Chyu affiliated with?
Dr. Chyu is affiliated with San Jose Medical Center.
What medical group is Dr. Daniel W. Chyu part of?
Dr. Chyu is linked to The Permanente Medical Group, Inc.
Is Dr. Daniel W. Chyu board certified?
Yes. Dr. Chyu is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Daniel W. Chyu go to medical school?
Dr. Chyu graduated from New York University School of Medicine in 2000.
What drugs does Dr. Daniel W. Chyu prescribe most?
In 2024 Medicare Part D data, Dr. Chyu's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
How long has Dr. Daniel W. Chyu been practicing?
Dr. Chyu graduated from medical school in 2000, 26 years ago.
What insurance does Dr. Daniel W. Chyu accept?
Dr. Chyu is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to internal medicine practices?
See internists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card