Dr. Thomas C. Sun, MD
- Part D claims, 2024
- 6,445
- Hospital affiliations
- 1
- Industry payments
- $82
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 25825 South Vermont Avenue, Harbor City, CA 90710
- Practice phone
- Call (310) 325-5111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sun's professional email, personal email and mobile number
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Dr. Thomas C. Sun is a family medicine physician in Harbor City, California
Dr. Sun practices at Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
Dr. Sun's NPI, 1215004106, was assigned on November 29, 2006. Dr. Sun graduated from Tufts University School Of Medicine in 1998. Dr. Sun holds California license A70176.
- NPI
- 1215004106NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042341828
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Thomas C. Sun practices at Kaiser Permanente South Bay Medical Center in Harbor City, California
Dr. Sun's primary practice is Kaiser Permanente South Bay Medical Center, at 25825 South Vermont Avenue, Harbor City, CA 90710 in Los Angeles County. The practice phone is (310) 325-5111.
- Kaiser Permanente South Bay Medical Center25825 South Vermont Avenue, Harbor City, CA 90710 · Los Angeles CountyPhone(310) 325-5111
Source: Dmand AI Affiliation Data
Dr. Thomas C. Sun is affiliated with 2 sites of care and 1 medical group
Dr. Sun's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Sun to 1 more group practice or 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. Thomas C. Sun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sun practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South Bay 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. Thomas C. Sun is one of 15,680 family medicine physicians in California
Family medicine is Dr. Sun's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Sun is board certified in family medicine by the American Board of Family Medicine. Dr. Sun is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists asthma, atrial fibrillation and flutter, chronic hypertension, high cholesterol and underactive thyroid among the conditions Dr. Sun treats.
Family medicine physicians near Dr. Sun
Counts of family medicine physicians 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. Thomas C. Sun's patients have a median age of 49
Across all payers, Dmand AI patient panel data puts Dr. Sun's median patient age at 49, with 60% women.
Dr. Sun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. Thomas C. Sun wrote 6,445 Medicare Part D claims in 2024
In 2024, Dr. Sun wrote 6,445 Medicare Part D claims for 556 patients. 90% of them were for generic drugs. CMS names the drug for 5,958 of them, across 98 drugs with 11 or more claims each, at $257,750 in total drug cost. In 2023, CMS named 5,042 claims across 85 drugs.
Dr. Sun's Part D claims by kind of drug, 2024
- Generic5,817 claims90%
- Brand-name554 claims9%
- Other74 claims1%
Dr. Sun'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. Sun's Part D claims, 2024
- Opioids4%246 of 6,445 claims
- Antibiotics2%151 of 6,445 claims
- Antipsychotics, patients 65 and over0%19 of 6,445 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: 5,0422024: 5,95818%
Drugs named by CMS: 98 in 2024, 85 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. Thomas C. Sun takes part in Medicare
Dr. Sun 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. Thomas C. Sun received $82 in industry payments from 2020 to 2023
CMS Open Payments shows 2 general payments to Dr. Sun from 2 drug and device companies from 2020 to 2023. Food and beverage make up the largest share, 100% of the total. Grifols Shared Services North America, Inc. paid the most, $62.
General payments to Dr. Sun by program year, 2020 to 2023
Companies that paid Dr. Sun the most, 2020 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas C. Sun has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Sun, most recently NCQA DRP in 2013.
Awards and honors for Dr. Sun
- 2013
- NCQA DRP
- 2012
- NCQA HSRP
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Thomas C. Sun graduated from Tufts University School Of Medicine
Dr. Sun graduated from Tufts University School Of Medicine in 1998.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Thomas C. Sun accepts plans from 2 insurance carriers
Dr. Sun 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. Sun accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Thomas C. Sun'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 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) |
| 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) |
| 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. Thomas C. Sun
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. Thomas C. Sun's NPI number?
Dr. Thomas C. Sun's NPI number is 1215004106. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas C. Sun?
Dr. Thomas C. Sun is a family medicine physician in Harbor City, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Thomas C. Sun practice?
Dr. Sun practices at 25825 South Vermont Avenue, Harbor City, CA 90710. Dr. Sun's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. Dmand AI also links Dr. Sun to 1 group practice or clinic.
What is Dr. Thomas C. Sun's office phone number?
The practice phone on file for Dr. Sun is (310) 325-5111.
What is Dr. Thomas C. Sun's medical license number?
Dr. Sun holds California license A70176.
Which hospitals is Dr. Thomas C. Sun affiliated with?
Dr. Sun practices at Kaiser Permanente South Bay Medical Center in Harbor City, California.
What medical group is Dr. Thomas C. Sun part of?
Dr. Sun is linked to Southern California Permanente Medical Group.
Does Dr. Thomas C. Sun accept Medicare?
Yes. CMS lists Dr. Sun as accepting Medicare assignment.
Is Dr. Thomas C. Sun board certified?
Yes. Dr. Sun is board certified in family medicine by the American Board of Family Medicine.
Where did Dr. Thomas C. Sun go to medical school?
Dr. Sun graduated from Tufts University School Of Medicine in 1998.
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What drugs does Dr. Thomas C. Sun prescribe most?
In 2024 Medicare Part D data, Dr. Sun's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Thomas C. Sun received payments from drug or device companies?
CMS Open Payments shows $82 in general payments to Dr. Sun from 2 companies from 2020 to 2023. The largest total came from Grifols Shared Services North America, Inc.
How long has Dr. Thomas C. Sun been practicing?
Dr. Sun graduated from medical school in 1998, 28 years ago.
What insurance does Dr. Thomas C. Sun accept?
Dr. Sun 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.
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