NPPES file of Aug 9, 2026

Karen Hong Xue Sun, M.D.

Internal Medicine Physician · Bridgewater, NJ

Karen Hong Xue Sun, M.D. is an internal medicine physician with a practice address in Bridgewater, New Jersey, and NPI 1558307900, issued on Jun 22, 2006. Check the license (New Jersey MA070631, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558307900
Name
Karen Hong Xue Sun
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
MA070631 NJ
Self-reported in NPPES; status is on the state search
Practice location
201 Union Ave, Bridgewater, NJ 08807
Phone
(908) 595-6330
Enumerated
Jun 22, 2006
Record last updated
Jul 2, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(908) 595-6330
Medicaid ID
8636605 NJ
Medicare enrollment
Enrolled (PECOS I20040511000757); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →

Also registered at 201 Union Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

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  2. Steven Faigenbaum, M.D.Ophthalmology Physician1235226978
  3. Drew Fairweather, D.M.D.General Practice Dentistry1356418941
  4. S Lee, MDSpecialist1144226028
  5. John McWhorter, MDRheumatology Physician1174564793
  6. Sudhir Mehta, M.D.Nephrology Physician1225134661

Verify Karen Hong Xue Sun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
    Search for license MA070631    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Jersey license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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3% more Medicare Part D claims than the average internal medicine physician in 2024

3,276 Medicare Part D claims for 204 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 30 claims were for opioids.

  1. Karen Sun3,276
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium165 claims
  2. Amlodipine Besylate161 claims
  3. Levothyroxine Sodium160 claims
  4. Mirtazapine150 claims
  5. Metoprolol Succinate147 claims
  6. Losartan Potassium118 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $256.38

16 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karen Sun$256.38
  2. Specialty average$1,303.06

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Alliance Medical Associates, PCBridgewater, NJ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Karen Hong Xue Sun among 4,632 internal medicine physician records in New Jersey

Karen Hong Xue Sun, M.D. is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.

  • NPI issued2006 · 8% of these records are older, 50% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated1984 · median 2000 among the 3,132 with a school on file
  • Record last updated2010 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

16 internal medicine physician records list a practice address in Bridgewater

They are 16 of the 1,051 NPPES records with a practice address in Bridgewater, and 4,632 internal medicine physician records in New Jersey.

All 4,632 in New Jersey → Every provider in Bridgewater → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Rakesh Ahuja, MBBS, MDBridgewater, NJ 088071578797270
  2. Shiow Cheng, MDBridgewater, NJ 088071114020526
  3. Jenil Gandhi, M.D.Bridgewater, NJ 088071992191993
  4. Alexander Kudryk, M.D.Bridgewater, NJ 088071912938671
  5. Gregory Lagana, M.D.Bridgewater, NJ 088071750650842
  6. Sandra Palleja, M.D.Bridgewater, NJ 088071932475431
  7. Praneetha Puskuri, MDBridgewater, NJ 088071851581656
  8. Peimei Qu, M.D.Bridgewater, NJ 088071063431252

Common questions

What is Karen Hong Xue Sun, M.D.'s NPI number?

Karen Hong Xue Sun, M.D.'s National Provider Identifier (NPI) is 1558307900, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Karen Hong Xue Sun, M.D. located?

The NPPES record lists a practice address at 201 Union Ave, Bridgewater, NJ, 08807. Phone: (908) 595-6330. Providers update this record themselves, so call before visiting.

How can I verify Karen Hong Xue Sun, M.D.'s license?

NPPES lists New Jersey license number MA070631, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Karen Hong Xue Sun, M.D. prescribe under Medicare Part D?

In 2024, Karen Hong Xue Sun, M.D. had 3,276 Medicare Part D claims for 204 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.