NPPES file of Aug 9, 2026

Xiaowen Fan, M.D.

Hospitalist Physician · Hackensack, NJ

Xiaowen Fan, M.D. is a hospitalist physician with a practice address in Hackensack, New Jersey, and NPI 1427412535, issued on Apr 6, 2016. Check the license (New Jersey 25MA10564000, 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
1427412535
Name
Xiaowen Fan
Credential
M.D.
Primary taxonomy
Hospitalist Physician 208M00000X
License number
25MA10564000 NJ
Self-reported in NPPES; status is on the state search
Practice location
30 Prospect Ave, Hackensack, NJ 07601
Phone
(212) 523-4000
Enumerated
Apr 6, 2016
Record last updated
Jun 18, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20240531003207); accepts Medicare assignment
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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Also registered at 30 Prospect Ave

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

  1. Gloria Abbey, MDStudent in an Organized Health Care Education/Training Program1184374647
  2. James AbbottStudent in an Organized Health Care Education/Training Program1568307957
  3. Mohammad Abboud, MDEmergency Medicine Physician1881187359
  4. Adham Abdelhameed, MDStudent in an Organized Health Care Education/Training Program1891599775
  5. Ahmad Abid, MDStudent in an Organized Health Care Education/Training Program1982406294
  6. Ashley AbrahamDentist1740975135

Verify Xiaowen Fan 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 25MA10564000
    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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88% fewer Medicare Part D claims than the average hospitalist physician in 2024

61 Medicare Part D claims for 36 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.

  1. Xiaowen Fan61
  2. Specialty average521

Most prescribed

  1. Pantoprazole Sodium11 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: $300.40

4 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Xiaowen Fan$300.40
  2. Specialty average$494.84

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. Gastrointestinal Specialist OF GeorgiaMarietta, GA

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

Xiaowen Fan among 644 hospitalist physician records in New Jersey

Xiaowen Fan, M.D. is one of 644 hospitalist physician records with a practice address in New Jersey. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 53% of them.

  • NPI issued2016 · 53% of these records are older, 41% newer
  • In a Medicare fileYes · 91% of these records are
  • In the CMS Doctors and Clinicians fileYes · 88% of these records are
  • Graduated2014 · median 2013 among the 565 with a school on file
  • Record last updated2019 · 36% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

34 hospitalist physician records list a practice address in Hackensack

They are 34 of the 2,908 NPPES records with a practice address in Hackensack, and 644 hospitalist physician records in New Jersey.

The 8 hospitalist physician records with the nearest ZIP codes

  1. Chithra Balasingham, MDHackensack, NJ 076011457307878
  2. Alan Chu, M.D.Hackensack, NJ 076011205178605
  3. Daniel D'Alessandro, MDHackensack, NJ 076011740237296
  4. Gazala Darvesh, M.D.Hackensack, NJ 076011922109149
  5. George Katzenbach, MDHackensack, NJ 076011225085400
  6. Gurpreet Kaur, M.D.Hackensack, NJ 076011952429458
  7. Angela MehtaHackensack, NJ 076011073887501
  8. Madhu Parmar, MDHackensack, NJ 076011417975194

Common questions

What is Xiaowen Fan, M.D.'s NPI number?

Xiaowen Fan, M.D.'s National Provider Identifier (NPI) is 1427412535, issued on Apr 6, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Xiaowen Fan, M.D. located?

The NPPES record lists a practice address at 30 Prospect Ave, Hackensack, NJ, 07601. Phone: (212) 523-4000. Providers update this record themselves, so call before visiting.

How can I verify Xiaowen Fan, M.D.'s license?

NPPES lists New Jersey license number 25MA10564000, 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 Xiaowen Fan, M.D. prescribe under Medicare Part D?

In 2024, Xiaowen Fan, M.D. had 61 Medicare Part D claims for 36 beneficiaries; the average among hospitalist physician prescribers was 521. 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.

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.