Clin Rev Allergy Immunol
Granuloma, Respiratory TractHypertension, PulmonaryIllicit Drugs
Dr. Will Tseng, MD
NPI1013176213PAC ID7810011103
- Medicare services, 2024
- 1,735
- Medicare patients, 2024
- 361
- Part D claims, 2024
- 851
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2506 Samaritan Court, San Jose, CA 95124
- Practice phone
- Call (408) 524-5770
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sutter Health Ambulatory Care Center and Surgery Center - San Jose
Surgery Center - Medicare-Certified · San Jose, California
Find Dr. Tseng'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. Will Tseng is a critical care medicine (internal medicine) physician in San Jose, California
Dr. Tseng practices at Sutter Health Ambulatory Care Center and Surgery Center - San Jose in San Jose, California.
Dr. Tseng's NPI, 1013176213, was assigned on June 3, 2008. Dr. Tseng graduated from Geisel School Of Medicine At Dartmouth in 2007. Dr. Tseng holds California license A105896.
NPI and contact details
- NPI
- 1013176213NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810011103
- NPI enumeration date
- June 3, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (408) 524-5770
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Will Tseng practices at Sutter Health Ambulatory Care Center and Surgery Center - San Jose in San Jose, California
Dr. Tseng's primary practice is Sutter Health Ambulatory Care Center and Surgery Center - San Jose, at 2506 Samaritan Court, San Jose, CA 95124. The practice phone is (408) 524-5770.
- Sutter Health Ambulatory Care Center and Surgery Center - San Jose2506 Samaritan Court, San Jose, CA 95124Phone(408) 524-5770
Source: Dmand AI Affiliation Data
Dr. Will Tseng is affiliated with 4 sites of care and 2 medical groups
Dr. Tseng's primary practice is Sutter Health Ambulatory Care Center and Surgery Center - San Jose in San Jose, California. Dr. Tseng is also affiliated with El Camino Health - Mountain View Hospital. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Tseng to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sutter Health Ambulatory Care Center and Surgery Center - San JosePrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Will Tseng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tseng practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Health Ambulatory Care Center and Surgery Center - San Jose | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Tseng practices
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. Will Tseng is one of 666 critical care medicine (internal medicine) physicians in California
Critical care medicine is Dr. Tseng's primary specialty in the NPI Registry, under taxonomy code 207RC0200X. Dr. Tseng is board certified in critical care medicine by the American Board of Internal Medicine. Dr. Tseng is licensed in California.
Specialties and state licenses
- Critical care medicine (internal medicine), CaliforniaPrimary
Critical care medicine (internal medicine) physicians near Dr. Tseng
Counts of critical care medicine (internal medicine) physicians with a Dmand AI profile, by place and practice. Each opens the list.
666critical care medicine (internal medicine) physicians in California19critical care medicine (internal medicine) physicians in San Jose
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Will Tseng billed Medicare for 1,735 services in 2024
CMS data shows 1,735 Medicare services from Dr. Tseng across 13 procedure codes in 2024, for 361 Medicare patients. Medicare paid $156,925 for them.
Medicare services, 20241,735
Medicare patients361
Paid by Medicare$156,925
Procedure codes13
Dr. Tseng's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 8492024: 8713%
- Tests and treatments
- 2023: 4552024: 4754%
- Other services
- 2023: 02024: 389
Where Dr. Tseng's Medicare services took place, 2024
- In an office1,55390%
- In a facility18210%
Dr. Tseng compared with the California median for critical care medicine (internal medicine) physicians, 2024
- Dr. Tseng
- California median
- Medicare services
- 1,735vs 3305.3 times
- Medicare patients
- 361vs 1652.2 times
- Part D claims
- 748vs 1106.8 times
Medians across 632 critical care medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Tseng'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.
Need commercial claims for Dr. Tseng?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tseng and other critical care medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Will Tseng treated 361 Medicare patients in 2024, average age 79
CMS counts 361 Medicare patients who saw Dr. Tseng in 2024. The largest group is 75 to 84, with 173 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.78, 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. Tseng's median patient age at 67, with 63% women.
Medicare patients, 2024361
Average age79
Average risk score1.78
Also on Medicaid11%
Dr. Tseng's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tseng's Medicare patients by sex, 2024
- Women20055%
- Men16145%
Chronic conditions among Dr. Tseng's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- COPD46%
- Ischemic heart disease44%
- Diabetes34%
- Atrial fibrillation33%
- Heart failure32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tseng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Will Tseng wrote 851 Medicare Part D claims in 2024
In 2024, Dr. Tseng wrote 851 Medicare Part D claims for 177 patients. 28% of them were for generic drugs. CMS names the drug for 748 of them, across 21 drugs with 11 or more claims each, at $383,456 in total drug cost. In 2023, CMS named 727 claims across 16 drugs.
Part D claims, 2024851
Drugs named by CMS21
Total drug cost$383,456
Part D patients177
Dr. Tseng's Part D claims by kind of drug, 2024
- Generic242 claims28%
- Brand-name609 claims72%
Dr. Tseng'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. Tseng's Part D claims, 2024
- Antibiotics4%38 of 851 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: 7272024: 7483%
Drugs named by CMS: 21 in 2024, 16 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
Dr. Will Tseng offers telehealth to Medicare patients
Dr. Tseng accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tseng as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find critical care medicine (internal medicine) physicians like Dr. Tseng by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Will Tseng has 1 publication on record
Dmand AI links 1 paper to Dr. Tseng. Dr. Tseng's most frequent co-author is Timothy Eugene Albertson, MD, MPH, PhD.
Papers1
Dr. Tseng's most frequent co-authors
Recent publications by Dr. Tseng
See who Dr. Tseng researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tseng works with, so you can find a warm path to the right critical care medicine (internal medicine) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Will Tseng received $3,247 in industry payments from 2016 to 2025
CMS Open Payments shows 132 general payments to Dr. Tseng from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. AstraZeneca Pharmaceuticals LP paid the most, $949.
General payments to Dr. Tseng by program year, 2016 to 2025
General payments to Dr. Tseng by kind, 2016 to 2025
$3.2Kin total
- Food and beverage$3,18698%
- Education$612%
Companies that paid Dr. Tseng 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. Will Tseng graduated from Geisel School Of Medicine At Dartmouth
Dr. Tseng graduated from Geisel School Of Medicine At Dartmouth in 2007.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Dr. Will Tseng accepts plans from 14 insurance carriers
Dr. Tseng is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Excellus BlueCross BlueShield
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +6 more carriersWith a free account
Plan types Dr. Tseng accepts, by number of carriers
- PPO10
- Medicare8
- HMO6
- EPO5
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Will Tseng'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) |
| 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 | Doctors and Clinicians National Downloadable File (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 |
| 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. Will Tseng
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. Will Tseng's NPI number?
Dr. Will Tseng's NPI number is 1013176213. It was assigned on June 3, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Will Tseng?
Dr. Will Tseng is a critical care medicine (internal medicine) physician in San Jose, California. The primary specialty in the NPI Registry is Critical Care Medicine (Internal Medicine) Physician (taxonomy code 207RC0200X).
Where does Dr. Will Tseng practice?
Dr. Tseng practices at 2506 Samaritan Court, San Jose, CA 95124. Dr. Tseng's primary practice is Sutter Health Ambulatory Care Center and Surgery Center - San Jose in San Jose, California. Dmand AI also links Dr. Tseng to 2 group practices and clinics and 1 medical group.
What is Dr. Will Tseng's office phone number?
The practice phone on file for Dr. Tseng is (408) 524-5770.
What is Dr. Will Tseng's medical license number?
Dr. Tseng holds California license A105896.
Which hospitals is Dr. Will Tseng affiliated with?
Dr. Tseng is affiliated with El Camino Health - Mountain View Hospital.
What medical group is Dr. Will Tseng part of?
Dr. Tseng is linked to Palo Alto Foundation Medical Group. Dmand AI links Dr. Tseng to 1 more medical group.
Does Dr. Will Tseng accept Medicare?
Yes. CMS data shows Dr. Tseng billed Medicare for 1,735 services in 2024, and Dr. Tseng accepts Medicare assignment.
Does Dr. Will Tseng offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tseng as offering telehealth services.
How many Medicare patients does Dr. Will Tseng see?
CMS counts 361 Medicare patients who saw Dr. Tseng in 2024, with an average age of 79.
Show 9 more questionsShow fewer questions
Is Dr. Will Tseng board certified?
Yes. Dr. Tseng is board certified in critical care medicine by the American Board of Internal Medicine.
What services does Dr. Will Tseng bill to Medicare?
In 2024, Dr. Tseng's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and office visit, established patient (99214).
Where did Dr. Will Tseng go to medical school?
Dr. Tseng graduated from Geisel School Of Medicine At Dartmouth in 2007.
What drugs does Dr. Will Tseng prescribe most?
In 2024 Medicare Part D data, Dr. Tseng's most prescribed drugs by claims were Trelegy Ellipta, Albuterol Sulfate Hfa and Anoro Ellipta.
Has Dr. Will Tseng received payments from drug or device companies?
CMS Open Payments shows $3,247 in general payments to Dr. Tseng from 14 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Will Tseng been practicing?
Dr. Tseng graduated from medical school in 2007, 19 years ago.
Does Dr. Will Tseng do research?
Dmand AI links 1 publication to Dr. Tseng.
Who does Dr. Will Tseng publish with?
Dr. Tseng's most frequent co-authors are Timothy Eugene Albertson, MD, MPH, PhD (1 shared paper).
What insurance does Dr. Will Tseng accept?
Dr. Tseng is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
Selling to critical care medicine practices?
See critical care medicine (internal medicine) physicians 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