Dr. Sothy Lun Pheng, MD
- Medicare services, 2024
- 3,014
- Medicare patients, 2024
- 329
- Part D claims, 2024
- 605
- Hospital affiliations
- 5
- Industry payments
- $2,197
- Practice address
- 101 E. Valencia Mesa Drive, Fullerton, CA 92835
- Practice phone
- Call (714) 578-8706
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St. Jude Medical Center - Unit
Acute Care Hospital-Unit · Fullerton, California
Find Dr. Pheng'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. Sothy Lun Pheng is an internist in Fullerton, California
Dr. Pheng practices at St. Jude Medical Center - Unit in Fullerton, California.
Dr. Pheng's NPI, 1083697007, was assigned on November 23, 2005. Dr. Pheng graduated from Ross University School of Medicine in 2001. Dr. Pheng holds California license C132666.
- NPI
- 1083697007NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638132186
- NPI enumeration date
- November 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 578-8706
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sothy Lun Pheng practices at St. Jude Medical Center - Unit in Fullerton, California
Dr. Pheng's primary practice is St. Jude Medical Center - Unit, at 101 E. Valencia Mesa Drive, Fullerton, CA 92835 in Orange County. The practice phone is (714) 578-8706.
- St. Jude Medical Center - Unit101 E. Valencia Mesa Drive, Fullerton, CA 92835 · Orange CountyPhone(714) 578-8706
Source: Dmand AI Affiliation Data
Dr. Sothy Lun Pheng is affiliated with 6 sites of care and 5 medical groups
Dr. Pheng's primary practice is St. Jude Medical Center - Unit in Fullerton, California. Dr. Pheng is also affiliated with Providence St. Jude Medical Center. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Pheng to 3 more hospitals, 4 medical groups and 1 physician office, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Sothy Lun Pheng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Pheng practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Jude Medical Center - Unit | Available with a free account |
| +5 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sothy Lun Pheng is one of 16,751 internists in California
Internal medicine is Dr. Pheng's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Pheng is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Pheng's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Massachusetts license
Clinical focus
Dmand AI lists bile duct problems, cardiac arrhythmia, cellulitis, circulation problems, circulatory problems in extremities, congestive heart failure, gastrointestinal bleeding and gastrointestinal obstruction among the conditions Dr. Pheng treats.
Internists near Dr. Pheng
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. Sothy Lun Pheng billed Medicare for 3,014 services in 2024
CMS data shows 3,014 Medicare services from Dr. Pheng across 5 procedure codes in 2024, for 329 Medicare patients. Medicare paid $300,894 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Pheng's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,8572024: 3,0145%
Dr. Pheng compared with the California median for internists, 2024
- Dr. Pheng
- California median
- Medicare services
- 3,014vs 3618.3 times
- Medicare patients
- 329vs 1512.2 times
- Part D claims
- 288vs 42132% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Pheng'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. Pheng and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sothy Lun Pheng treated 329 Medicare patients in 2024, average age 77
CMS counts 329 Medicare patients who saw Dr. Pheng in 2024. The largest group is 75 to 84, with 107 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 44% are also on Medicaid. Their average risk score is 3.09, 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. Pheng's median patient age at 72, with 52% women.
Dr. Pheng's Medicare patients by age, 2024
Dr. Pheng's Medicare patients by sex, 2024
- Women15748%
- Men17252%
Chronic conditions among Dr. Pheng's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes56%
- Heart failure55%
- Arthritis53%
- Chronic kidney disease53%
- Ischemic heart disease52%
- Atrial fibrillation45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Pheng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
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. Sothy Lun Pheng wrote 605 Medicare Part D claims in 2024
In 2024, Dr. Pheng wrote 605 Medicare Part D claims for 203 patients. 87% of them were for generic drugs. CMS names the drug for 288 of them, across 15 drugs with 11 or more claims each, at $13,339 in total drug cost. In 2023, CMS named 256 claims across 14 drugs.
Dr. Pheng's Part D claims by kind of drug, 2024
- Generic527 claims87%
- Brand-name and other78 claims13%
Dr. Pheng'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. Pheng's Part D claims, 2024
- Opioids4%26 of 605 claims
- Antibiotics18%109 of 605 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: 2562024: 28813%
Drugs named by CMS: 15 in 2024, 14 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. Sothy Lun Pheng takes part in Medicare
Dr. Pheng 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. Sothy Lun Pheng received $2,197 in industry payments from 2016 to 2025
CMS Open Payments shows 79 general payments to Dr. Pheng from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Actelion Pharmaceuticals US, Inc. paid the most, $575.
General payments to Dr. Pheng by program year, 2016 to 2025
Companies that paid Dr. Pheng 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. Sothy Lun Pheng graduated from Ross University School of Medicine
Dr. Pheng graduated from Ross University School of Medicine in 2001. Dr. Pheng is a member of SHM.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Sothy Lun Pheng accepts plans from 14 insurance carriers
Dr. Pheng is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Pheng accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sothy Lun Pheng'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 |
| 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. Sothy Lun Pheng
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. Sothy Lun Pheng's NPI number?
Dr. Sothy Lun Pheng's NPI number is 1083697007. It was assigned on November 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Sothy Lun Pheng?
Dr. Sothy Lun Pheng is an internist in Fullerton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Sothy Lun Pheng practice?
Dr. Pheng practices at 101 E. Valencia Mesa Drive, Fullerton, CA 92835. Dr. Pheng's primary practice is St. Jude Medical Center - Unit in Fullerton, California. Dmand AI also links Dr. Pheng to 3 hospitals, 4 medical groups and 1 physician office.
What is Dr. Sothy Lun Pheng's office phone number?
The practice phone on file for Dr. Pheng is (714) 578-8706.
What is Dr. Sothy Lun Pheng's medical license number?
Dr. Pheng holds California license C132666, one of the licenses on file in 2 states.
Which states has Dr. Sothy Lun Pheng been licensed in?
Dmand AI has state licenses on file for Dr. Pheng in California (2014 to 2026) and Massachusetts (1997 to 2027).
Which hospitals is Dr. Sothy Lun Pheng affiliated with?
Dr. Pheng is affiliated with Providence St. Jude Medical Center. Dmand AI links Dr. Pheng to 4 more hospitals.
What medical group is Dr. Sothy Lun Pheng part of?
Dr. Pheng is linked to St. Jude Heritage Medical Group. Dmand AI links Dr. Pheng to 4 more medical groups.
Does Dr. Sothy Lun Pheng accept Medicare?
Yes. CMS data shows Dr. Pheng billed Medicare for 3,014 services in 2024, and Dr. Pheng accepts Medicare assignment.
How many Medicare patients does Dr. Sothy Lun Pheng see?
CMS counts 329 Medicare patients who saw Dr. Pheng in 2024, with an average age of 77.
Show 7 more questionsShow fewer questions
Is Dr. Sothy Lun Pheng board certified?
Yes. Dr. Pheng is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Sothy Lun Pheng bill to Medicare?
In 2024, Dr. Pheng's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
Where did Dr. Sothy Lun Pheng go to medical school?
Dr. Pheng graduated from Ross University School of Medicine in 2001.
What drugs does Dr. Sothy Lun Pheng prescribe most?
In 2024 Medicare Part D data, Dr. Pheng's most prescribed drugs by claims were Pantoprazole Sodium, Potassium Chloride and Cefuroxime.
Has Dr. Sothy Lun Pheng received payments from drug or device companies?
CMS Open Payments shows $2,197 in general payments to Dr. Pheng from 10 companies from 2016 to 2025. The largest total came from Actelion Pharmaceuticals US, Inc.
How long has Dr. Sothy Lun Pheng been practicing?
Dr. Pheng graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Sothy Lun Pheng accept?
Dr. Pheng is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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