Dr. Joshua C.h. Tan, MD
- Medicare services, 2024
- 840
- Medicare patients, 2024
- 141
- Part D claims, 2024
- 11,809
- Hospital affiliations
- 2
- Industry payments
- $118,493
- Practice address
- 550 S Beretania St, Honolulu, HI 96813-2414
- Practice phone
- Call (808) 949-8988
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Joshua Ch Tan MD Inc
Physician office · Honolulu, Hawaii
Find Dr. Tan'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. Joshua C.h. Tan is an internist in Honolulu, Hawaii
Dr. Tan practices at Joshua Ch Tan MD Inc in Honolulu, Hawaii.
Dr. Tan's NPI, 1922297845, was assigned on October 16, 2007. Dr. Tan graduated from Oral Roberts University School of Medicine in 1990. Dr. Tan holds Hawaii license 7552.
- NPI
- 1922297845NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2163491994
- NPI enumeration date
- October 16, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (808) 949-8988
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joshua C.h. Tan practices at Joshua Ch Tan MD Inc in Honolulu, Hawaii
Dr. Tan's primary practice is Joshua Ch Tan MD Inc, at 550 S Beretania St, Honolulu, HI 96813-2414. The practice phone is (808) 949-8988.
- Joshua Ch Tan MD Inc550 S Beretania St, Honolulu, HI 96813-2414Phone(808) 949-8988
Source: Dmand AI Affiliation Data
Dr. Joshua C.h. Tan is affiliated with 3 sites of care
Dr. Tan's primary practice is Joshua Ch Tan MD Inc in Honolulu, Hawaii. Dr. Tan is also affiliated with The Queen's Medical Center. Dmand AI also links Dr. Tan to 1 more hospital, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Joshua C.h. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Joshua Ch Tan MD Inc | 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. Joshua C.h. Tan is one of 771 internists in Hawaii
Internal medicine is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tan is licensed in Hawaii.
Specialties and state licenses
- Internal medicine, HawaiiPrimary
Internists near Dr. Tan
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. Joshua C.h. Tan billed Medicare for 840 services in 2024
CMS data shows 840 Medicare services from Dr. Tan across 4 procedure codes in 2024, for 141 Medicare patients. Medicare paid $74,597 for them. Every service was in an office.
Dr. Tan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7152024: 7383%
- Other services
- 2023: 1192024: 10214%
- Tests and treatments
- 2023: 142024: 0100%
Dr. Tan compared with the Hawaii median for internists, 2024
- Dr. Tan
- Hawaii median
- Medicare services
- 840vs 3422.5 times
- Medicare patients
- 141vs 12810% above
- Part D claims
- 11,231vs 67016.8 times
Medians across 699 internists in Hawaii with Dmand AI profiles that report each measure.
Dr. 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 Dr. Tan and other internists in Hawaii.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joshua C.h. Tan treated 141 Medicare patients in 2024, average age 75
CMS counts 141 Medicare patients who saw Dr. Tan in 2024. The largest group is 65 to 74, with 70 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.35, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 74, with 52% women.
Dr. Tan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tan's Medicare patients by sex, 2024
- Women7352%
- Men6848%
Chronic conditions among Dr. Tan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes50%
- Arthritis29%
- Chronic kidney disease21%
- COPD19%
- Ischemic heart disease14%
- Asthma13%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 74
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joshua C.h. Tan wrote 11,809 Medicare Part D claims in 2024
In 2024, Dr. Tan wrote 11,809 Medicare Part D claims for 503 patients. 75% of them were for generic drugs. CMS names the drug for 11,231 of them, across 156 drugs with 11 or more claims each, at $2,657,840 in total drug cost. In 2023, CMS named 11,058 claims across 151 drugs.
Dr. Tan's Part D claims by kind of drug, 2024
- Generic8,863 claims75%
- Brand-name2,818 claims24%
- Other128 claims1%
Dr. 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 Dr. Tan's Part D claims, 2024
- Opioids3%332 of 11,809 claims
- Antibiotics4%478 of 11,809 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: 11,0582024: 11,2312%
Drugs named by CMS: 156 in 2024, 151 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
How Dr. Joshua C.h. Tan takes part in Medicare
Dr. Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Joshua C.h. Tan received $118,493 in industry payments from 2016 to 2025
CMS Open Payments shows 4,208 general payments to Dr. Tan from 66 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $20,552.
General payments to Dr. Tan by program year, 2016 to 2025
General payments to Dr. Tan by kind, 2016 to 2025
- Food and beverage$117,65999%
- Education$8341%
Companies that paid Dr. Tan 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. Joshua C.h. Tan graduated from Oral Roberts University School of Medicine
Dr. Tan graduated from Oral Roberts University School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joshua C.h. 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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Dr. Joshua C.h. 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 Dr. Joshua C.h. Tan's NPI number?
Dr. Joshua C.h. Tan's NPI number is 1922297845. It was assigned on October 16, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Joshua C.h. Tan?
Dr. Joshua C.h. Tan is an internist in Honolulu, Hawaii. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Joshua C.h. Tan practice?
Dr. Tan practices at 550 S Beretania St, Honolulu, HI 96813-2414. Dr. Tan's primary practice is Joshua Ch Tan MD Inc in Honolulu, Hawaii. Dmand AI also links Dr. Tan to 1 hospital.
What is Dr. Joshua C.h. Tan's office phone number?
The practice phone on file for Dr. Tan is (808) 949-8988.
What is Dr. Joshua C.h. Tan's medical license number?
Dr. Tan holds Hawaii license 7552.
Which hospitals is Dr. Joshua C.h. Tan affiliated with?
Dr. Tan is affiliated with The Queen's Medical Center. Dmand AI links Dr. Tan to 1 more hospital.
Does Dr. Joshua C.h. Tan accept Medicare?
Yes. CMS data shows Dr. Tan billed Medicare for 840 services in 2024, and Dr. Tan accepts Medicare assignment.
How many Medicare patients does Dr. Joshua C.h. Tan see?
CMS counts 141 Medicare patients who saw Dr. Tan in 2024, with an average age of 75.
What services does Dr. Joshua C.h. Tan bill to Medicare?
In 2024, Dr. Tan's most billed Medicare services were office visit, established patient (99214), medicare service (G0439) and office visit, established patient (99213).
Where did Dr. Joshua C.h. Tan go to medical school?
Dr. Tan graduated from Oral Roberts University School of Medicine in 1990.
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What drugs does Dr. Joshua C.h. Tan prescribe most?
In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Vascepa.
Has Dr. Joshua C.h. Tan received payments from drug or device companies?
CMS Open Payments shows $118,493 in general payments to Dr. Tan from 66 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Joshua C.h. Tan been practicing?
Dr. Tan graduated from medical school in 1990, 36 years ago.
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