Dr. Joanna Ai Wan Tan, MD
- Medicare services, 2018
- 28
- Part D claims, 2024
- 610
- Hospital affiliations
- 1
- Industry payments
- $431
- Medical group
- 1
- Practice address
- 2801 Atlantic Ave, Long Beach, CA 90806
- Practice phone
- Call (562) 933-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tan's professional email, personal email and mobile number
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Dr. Joanna Ai Wan Tan is an internist in Long Beach, California
Dr. Tan practices at Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System.
Dr. Tan's NPI, 1053637959, was assigned on April 16, 2010. Dr. Tan graduated from University of Calgary Faculty of Medicine in 2005. Dr. Tan's California license number on file is A109279.
- NPI
- 1053637959NPI Registry (opens in a new tab)
- NPI enumeration date
- April 16, 2010
- NPI status
- Active
- Practice phone
- (562) 933-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Joanna Ai Wan Tan practices at Long Beach Medical Center in Long Beach, California
Dr. Tan's primary practice is Long Beach Medical Center, at 2801 Atlantic Ave, Long Beach, CA 90806 in Los Angeles County. The practice phone is (562) 933-2000.
- Long Beach Medical Center2801 Atlantic Ave, Long Beach, CA 90806 · Los Angeles CountyPhone(562) 933-2000
Source: Dmand AI Affiliation Data
Dr. Joanna Ai Wan Tan is affiliated with 2 sites of care and 1 medical group
Dr. Tan's primary practice is Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Tan to 1 more therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joanna Ai Wan Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Long Beach Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joanna Ai Wan Tan is one of 16,751 internists in California
Internal medicine is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Tan's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Ohio license
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. Joanna Ai Wan Tan billed Medicare for 28 services in 2018
CMS data shows 28 Medicare services from Dr. Tan across 1 procedure code in 2018. Medicare paid $2,483 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Tan's Medicare services by type, 2016 to 2018
- 2016
- 2018
- Office and hospital visits
- 2016: 262018: 288%
Dr. Tan compared with the California median for internists, 2018
- Dr. Tan
- California median
- Medicare services
- 28vs 36192% below
- Part D claims
- 261vs 42138% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Tan's most billed Medicare procedure codes, 2018
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 California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joanna Ai Wan Tan's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 74, with 56% women.
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
- Women56%
- Men44%
Source: Dmand AI Patient Panel Data
Dr. Joanna Ai Wan Tan wrote 610 Medicare Part D claims in 2024
In 2024, Dr. Tan wrote 610 Medicare Part D claims for 177 patients. 85% of them were for generic drugs. CMS names the drug for 261 of them, across 15 drugs with 11 or more claims each, at $2,291 in total drug cost. In 2023, CMS named 202 claims across 12 drugs.
Dr. Tan's Part D claims by kind of drug, 2024
- Generic517 claims85%
- Brand-name80 claims13%
- Other13 claims2%
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
- Opioids6%36 of 610 claims
- Antibiotics12%73 of 610 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: 2022024: 26129%
Drugs named by CMS: 15 in 2024, 12 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
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Dr. Joanna Ai Wan Tan received $431 in industry payments from 2016 to 2023
CMS Open Payments shows 26 general payments to Dr. Tan from 10 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Pfizer Inc. paid the most, $83.
General payments to Dr. Tan by program year, 2016 to 2023
Companies that paid Dr. Tan the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joanna Ai Wan Tan graduated from University of Calgary Faculty of Medicine
Dr. Tan graduated from University of Calgary Faculty of Medicine in 2005.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Joanna Ai Wan Tan accepts plans from 8 insurance carriers
Dr. Tan is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
Plan types Dr. Tan accepts, by number of carriers
- Medicare6
- PPO5
- POS4
- HMO3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Joanna Ai Wan 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 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 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) |
| 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. Joanna Ai Wan 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. Joanna Ai Wan Tan's NPI number?
Dr. Joanna Ai Wan Tan's NPI number is 1053637959. It was assigned on April 16, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Joanna Ai Wan Tan?
Dr. Joanna Ai Wan Tan is an internist in Long Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Joanna Ai Wan Tan practice?
Dr. Tan practices at 2801 Atlantic Ave, Long Beach, CA 90806. Dr. Tan's primary practice is Long Beach Medical Center in Long Beach, California, part of MemorialCare Health System. Dmand AI also links Dr. Tan to 1 therapy and rehab clinic.
What is Dr. Joanna Ai Wan Tan's office phone number?
The practice phone on file for Dr. Tan is (562) 933-2000.
What is Dr. Joanna Ai Wan Tan's medical license number?
Dr. Tan's California license number on file is A109279, one of the licenses on file in 2 states.
Which states has Dr. Joanna Ai Wan Tan been licensed in?
Dmand AI has state licenses on file for Dr. Tan in California (2009 to 2025) and Ohio (2005 to 2007).
Which hospitals is Dr. Joanna Ai Wan Tan affiliated with?
Dr. Tan practices at Long Beach Medical Center in Long Beach, California.
What medical group is Dr. Joanna Ai Wan Tan part of?
Dr. Tan is linked to Optum - Downtown Los Angeles.
Does Dr. Joanna Ai Wan Tan accept Medicare?
Yes. CMS data shows Dr. Tan billed Medicare for 28 services in 2018.
Is Dr. Joanna Ai Wan Tan board certified?
Yes. Dr. Tan is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Joanna Ai Wan Tan bill to Medicare?
In 2018, Dr. Tan's most billed Medicare services were hospital inpatient care (99233).
Where did Dr. Joanna Ai Wan Tan go to medical school?
Dr. Tan graduated from University of Calgary Faculty of Medicine in 2005.
What drugs does Dr. Joanna Ai Wan Tan prescribe most?
In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Furosemide.
Has Dr. Joanna Ai Wan Tan received payments from drug or device companies?
CMS Open Payments shows $431 in general payments to Dr. Tan from 10 companies from 2016 to 2023. The largest total came from Pfizer Inc.
How long has Dr. Joanna Ai Wan Tan been practicing?
Dr. Tan graduated from medical school in 2005, 21 years ago.
What insurance does Dr. Joanna Ai Wan Tan accept?
Dr. Tan is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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