Zhongguo Zhong Xi Yi Jie He Za Zhi
Factor Analysis, StatisticalGlomerulonephritisMedicine, Chinese Traditional
Dr. Pei Fang Sun, MD
NPI1225171754PAC ID6305962242
- Medicare services, 2024
- 408
- Medicare patients, 2024
- 176
- Part D claims, 2024
- 5,233
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 850 N Main St Ext, Wallingford, CT 06492
- Practice phone
- Call (203) 269-4353
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pei Sun MD.
Wallingford, Connecticut
Find Dr. Sun'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. Pei Fang Sun is an internist in Wallingford, Connecticut
Dr. Sun practices at Pei Sun MD. in Wallingford, Connecticut.
Dr. Sun's NPI, 1225171754, was assigned on February 15, 2007. Dr. Sun holds Connecticut license 037546.
NPI and contact details
- NPI
- 1225171754NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305962242
- NPI enumeration date
- February 15, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 269-4353
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Pei Fang Sun practices at Pei Sun MD. in Wallingford, Connecticut
Dr. Sun's primary practice is Pei Sun MD., at 850 N Main St Ext, Wallingford, CT 06492 in Naugatuck Vly County. The practice phone is (203) 269-4353.
- Pei Sun MD.850 N Main St Ext, Wallingford, CT 06492 · Naugatuck Vly CountyPhone(203) 269-4353
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Pei Fang Sun is affiliated with 6 sites of care and 1 medical group
Dr. Sun's primary practice is Pei Sun MD. in Wallingford, Connecticut. Dr. Sun is also affiliated with Yale New Haven Hospital. The medical group on file is Pei Sun, MD, LLC. Dmand AI also links Dr. Sun to 1 more hospital, 2 home health agencies and 1 group practice or clinic, each named with a free account.
Pei Sun MD.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Pei Fang Sun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sun practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pei Sun MD. | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Sun practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Pei Fang Sun is one of 2,189 internists in Connecticut
Internal medicine is Dr. Sun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Sun is licensed in Connecticut.
Specialties and state licenses
- Internal medicine, ConnecticutPrimary
Internists near Dr. Sun
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. Pei Fang Sun billed Medicare for 408 services in 2024
CMS data shows 408 Medicare services from Dr. Sun across 9 procedure codes in 2024, for 176 Medicare patients. Medicare paid $26,008 for them. Every service was in an office.
Medicare services, 2024408
Medicare patients176
Paid by Medicare$26,008
Procedure codes9
Dr. Sun's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2742024: 18433%
- Other services
- 2023: 2412024: 16631%
- Tests and treatments
- 2023: 992024: 5841%
Dr. Sun compared with the Connecticut median for internists, 2024
- Dr. Sun
- Connecticut median
- Medicare services
- 408vs 390Close to median
- Medicare patients
- 176vs 172Close to median
- Part D claims
- 4,613vs 34313.4 times
Medians across 2,185 internists in Connecticut with Dmand AI profiles that report each measure.
Dr. Sun'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. Sun?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sun and other internists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Pei Fang Sun treated 176 Medicare patients in 2024, average age 76
CMS counts 176 Medicare patients who saw Dr. Sun in 2024. The largest group is 65 to 74, with 66 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sun's median patient age at 64, with 58% women.
Medicare patients, 2024176
Average age76
Average risk score1.03
Also on Medicaid22%
Dr. Sun's Medicare patients by age, 2024
Dr. Sun's Medicare patients by sex, 2024
- Women12370%
- Men5330%
Chronic conditions among Dr. Sun's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis43%
- Anxiety35%
- Diabetes24%
- Ischemic heart disease20%
- Mood disorders20%
- COPD19%
Share of Medicare patients with each condition. A patient can have several.
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 64
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Pei Fang Sun wrote 5,233 Medicare Part D claims in 2024
In 2024, Dr. Sun wrote 5,233 Medicare Part D claims for 814 patients. 88% of them were for generic drugs. CMS names the drug for 4,613 of them, across 90 drugs with 11 or more claims each, at $229,519 in total drug cost. In 2023, CMS named 4,835 claims across 93 drugs.
Part D claims, 20245,233
Drugs named by CMS90
Total drug cost$229,519
Part D patients814
Dr. Sun's Part D claims by kind of drug, 2024
- Generic4,629 claims88%
- Brand-name562 claims11%
- Other42 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
- Opioids0%19 of 5,233 claims
- Antibiotics3%139 of 5,233 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: 4,8352024: 4,6135%
Drugs named by CMS: 90 in 2024, 93 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. Pei Fang Sun offers telehealth to Medicare patients
Dr. Sun accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sun as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Find internists like Dr. Sun by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Pei Fang Sun has 1 publication on record
Dmand AI links 1 paper to Dr. Sun.
Papers1
Recent publications by Dr. Sun
See who Dr. Sun researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sun works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Pei Fang Sun received $600 in industry payments from 2016 to 2025
CMS Open Payments shows 44 general payments to Dr. Sun from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $363.
General payments to Dr. Sun by program year, 2016 to 2025
Companies that paid Dr. Sun the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Pei Fang 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Pei Fang 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. Pei Fang Sun's NPI number?
Dr. Pei Fang Sun's NPI number is 1225171754. It was assigned on February 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Pei Fang Sun?
Dr. Pei Fang Sun is an internist in Wallingford, Connecticut. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Pei Fang Sun practice?
Dr. Sun practices at 850 N Main St Ext, Wallingford, CT 06492. Dr. Sun's primary practice is Pei Sun MD. in Wallingford, Connecticut. Dmand AI also links Dr. Sun to 1 hospital, 2 home health agencies and 1 group practice or clinic.
What is Dr. Pei Fang Sun's office phone number?
The practice phone on file for Dr. Sun is (203) 269-4353.
What is Dr. Pei Fang Sun's medical license number?
Dr. Sun holds Connecticut license 037546.
Which hospitals is Dr. Pei Fang Sun affiliated with?
Dr. Sun is affiliated with Yale New Haven Hospital. Dmand AI links Dr. Sun to 1 more hospital.
What medical group is Dr. Pei Fang Sun part of?
Dr. Sun is linked to Pei Sun, MD, LLC.
Does Dr. Pei Fang Sun accept Medicare?
Yes. CMS data shows Dr. Sun billed Medicare for 408 services in 2024, and Dr. Sun accepts Medicare assignment.
Does Dr. Pei Fang Sun offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Sun as offering telehealth services.
How many Medicare patients does Dr. Pei Fang Sun see?
CMS counts 176 Medicare patients who saw Dr. Sun in 2024, with an average age of 76.
Show 5 more questionsShow fewer questions
What services does Dr. Pei Fang Sun bill to Medicare?
In 2024, Dr. Sun's most billed Medicare services were office visit, established patient (99213), medicare service (G0439) and medicare service (G0444).
What drugs does Dr. Pei Fang Sun prescribe most?
In 2024 Medicare Part D data, Dr. Sun's most prescribed drugs by claims were Amlodipine Besylate, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Pei Fang Sun received payments from drug or device companies?
CMS Open Payments shows $600 in general payments to Dr. Sun from 11 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Pei Fang Sun been practicing?
Dr. Sun graduated from medical school in 1983, 43 years ago.
Does Dr. Pei Fang Sun do research?
Dmand AI links 1 publication to Dr. Sun.
Selling to internal medicine practices?
See internists in Connecticut by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card