Dr. Douglas Chung-Ou Tong, MD
- Medicare services, 2024
- 449
- Medicare patients, 2024
- 225
- Part D claims, 2024
- 2,305
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 7225 Rainbow Dr, San Jose, CA 95129-4552
- Practice phone
- Call (408) 739-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Palo Alto Medial Foundation
Multi-specialty group site · San Jose, California
Find Dr. Tong'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. Douglas Chung-Ou Tong is an internist in San Jose, California
Dr. Tong practices at Palo Alto Medial Foundation in San Jose, California.
Dr. Tong's NPI, 1811905094, was assigned on August 4, 2006. Dr. Tong graduated from Feinberg School of Medicine in 1999. Dr. Tong holds California license A73050.
- NPI
- 1811905094NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4183722416
- NPI enumeration date
- August 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (408) 739-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Douglas Chung-Ou Tong practices at Palo Alto Medial Foundation in San Jose, California
Dr. Tong's primary practice is Palo Alto Medial Foundation, at 7225 Rainbow Dr, San Jose, CA 95129-4552. The practice phone is (408) 739-6000.
- Palo Alto Medial Foundation7225 Rainbow Dr, San Jose, CA 95129-4552Phone(408) 739-6000
Source: Dmand AI Affiliation Data
Dr. Douglas Chung-Ou Tong is affiliated with 3 sites of care and 1 medical group
Dr. Tong's primary practice is Palo Alto Medial Foundation in San Jose, California. Dr. Tong 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. Tong to 1 more home health agency, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Douglas Chung-Ou Tong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tong practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Palo Alto Medial Foundation | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Douglas Chung-Ou Tong is one of 16,751 internists in California
Internal medicine is Dr. Tong's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tong is board certified in internal medicine by the American Board of Internal Medicine. Dr. Tong is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute sinusitis, acute skin infection, arteritis, arthritis, asthma, atrial fibrillation and flutter, chest wall injury and chronic anemia among the conditions Dr. Tong treats.
Internists near Dr. Tong
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. Douglas Chung-Ou Tong billed Medicare for 449 services in 2024
CMS data shows 449 Medicare services from Dr. Tong across 8 procedure codes in 2024, for 225 Medicare patients. Medicare paid $42,064 for them.
Dr. Tong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2352024: 27718%
- Other services
- 2023: 1042024: 16054%
- Tests and treatments
- 2023: 02024: 12
Where Dr. Tong's Medicare services took place, 2024
- In an office42996%
- In a facility204%
Dr. Tong compared with the California median for internists, 2024
- Dr. Tong
- California median
- Medicare services
- 449vs 36124% above
- Medicare patients
- 225vs 15149% above
- Part D claims
- 1,758vs 4214.2 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Tong'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. Tong?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tong and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Douglas Chung-Ou Tong treated 225 Medicare patients in 2024, average age 75
CMS counts 225 Medicare patients who saw Dr. Tong in 2024. The largest group is 65 to 74, with 115 patients. 71% of them have high cholesterol, and 64% have high blood pressure. 6% are also on Medicaid. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tong's median patient age at 58, with 34% women.
Dr. Tong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tong's Medicare patients by sex, 2024
- Women8437%
- Men14163%
Chronic conditions among Dr. Tong's Medicare patients, 2024
- High cholesterol71%
- High blood pressure64%
- Arthritis26%
- Diabetes24%
- Chronic kidney disease22%
- Ischemic heart disease22%
- Atrial fibrillation21%
- Cancer18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tong'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
- Women34%
- Men65%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Douglas Chung-Ou Tong wrote 2,305 Medicare Part D claims in 2024
In 2024, Dr. Tong wrote 2,305 Medicare Part D claims for 245 patients. 89% of them were for generic drugs. CMS names the drug for 1,758 of them, across 40 drugs with 11 or more claims each, at $152,846 in total drug cost. In 2023, CMS named 1,839 claims across 46 drugs.
Dr. Tong's Part D claims by kind of drug, 2024
- Generic2,059 claims89%
- Brand-name232 claims10%
- Other14 claims1%
Dr. Tong'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. Tong's Part D claims, 2024
- Opioids1%12 of 2,305 claims
- Antibiotics2%48 of 2,305 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: 1,8392024: 1,7584%
Drugs named by CMS: 40 in 2024, 46 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. Douglas Chung-Ou Tong offers telehealth to Medicare patients
Dr. Tong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Douglas Chung-Ou Tong has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tong, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Tong
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Douglas Chung-Ou Tong graduated from Feinberg School of Medicine
Dr. Tong graduated from Feinberg School of Medicine in 1999. Dr. Tong is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Douglas Chung-Ou Tong accepts plans from 11 insurance carriers
Dr. Tong is in network with 11 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +3 more carriersWith a free account
Plan types Dr. Tong accepts, by number of carriers
- PPO7
- HMO6
- EPO4
- Medicare4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Douglas Chung-Ou Tong'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 | Doctors and Clinicians National Downloadable File (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. Douglas Chung-Ou Tong
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. Douglas Chung-Ou Tong's NPI number?
Dr. Douglas Chung-Ou Tong's NPI number is 1811905094. It was assigned on August 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Douglas Chung-Ou Tong?
Dr. Douglas Chung-Ou Tong is an internist in San Jose, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Douglas Chung-Ou Tong practice?
Dr. Tong practices at 7225 Rainbow Dr, San Jose, CA 95129-4552. Dr. Tong's primary practice is Palo Alto Medial Foundation in San Jose, California. Dmand AI also links Dr. Tong to 1 home health agency.
What is Dr. Douglas Chung-Ou Tong's office phone number?
The practice phone on file for Dr. Tong is (408) 739-6000.
What is Dr. Douglas Chung-Ou Tong's medical license number?
Dr. Tong holds California license A73050.
Which hospitals is Dr. Douglas Chung-Ou Tong affiliated with?
Dr. Tong is affiliated with El Camino Health - Mountain View Hospital.
What medical group is Dr. Douglas Chung-Ou Tong part of?
Dr. Tong is linked to Palo Alto Foundation Medical Group.
Does Dr. Douglas Chung-Ou Tong accept Medicare?
Yes. CMS data shows Dr. Tong billed Medicare for 449 services in 2024, and Dr. Tong accepts Medicare assignment.
Does Dr. Douglas Chung-Ou Tong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tong as offering telehealth services.
How many Medicare patients does Dr. Douglas Chung-Ou Tong see?
CMS counts 225 Medicare patients who saw Dr. Tong in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
Is Dr. Douglas Chung-Ou Tong board certified?
Yes. Dr. Tong is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Douglas Chung-Ou Tong bill to Medicare?
In 2024, Dr. Tong's most billed Medicare services were office visit, established patient (99213), medicare service (G0439) and office visit, established patient (99214).
Where did Dr. Douglas Chung-Ou Tong go to medical school?
Dr. Tong graduated from Feinberg School of Medicine in 1999.
What drugs does Dr. Douglas Chung-Ou Tong prescribe most?
In 2024 Medicare Part D data, Dr. Tong's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Losartan Potassium.
How long has Dr. Douglas Chung-Ou Tong been practicing?
Dr. Tong graduated from medical school in 1999, 27 years ago.
What insurance does Dr. Douglas Chung-Ou Tong accept?
Dr. Tong is in network with 11 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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