NPPES file of Aug 9, 2026

Lin Chen, NP

Family Nurse Practitioner · Rockville, MD

Lin Chen, NP is a family nurse practitioner with a practice address in Rockville, Maryland, and NPI 1457921140, issued on Jun 25, 2021. Check the license (Maryland R203912, as entered in NPPES) with the Maryland board that licenses this profession; 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
1457921140
Name
Lin Chen
Credential
NP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
R203912 MD
Self-reported in NPPES; status is on the state search
Practice location
9715 Medical Center Dr Ste 531, Rockville, MD 20850
Phone
(301) 424-9723
Enumerated
Jun 25, 2021
Record last updated
Jun 25, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20211129001413); 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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Also registered at 9715 Medical Center Dr Ste 531

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

  1. Tracy Chang, CRNPFamily Nurse Practitioner1912456989

Verify Lin Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license R203912
    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
Find the Maryland 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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49% fewer Medicare Part D claims than the average family nurse practitioner in 2024

664 Medicare Part D claims for 197 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 101 claims were for opioids.

  1. Lin Chen664
  2. Specialty average1,305

Most prescribed

  1. Prochlorperazine Maleate50 claims
  2. Ondansetron Hcl47 claims
  3. Oxycodone Hcl34 claims
  4. Tramadol Hcl32 claims
  5. Dexamethasone30 claims
  6. Lidocaine-Prilocaine29 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: $1,897.74

57 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lin Chen$1,897.74
  2. Specialty average$650.95

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. Maryland Oncology Hematology PARockville, MD

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

Lin Chen among 4,124 family nurse practitioner records in Maryland

Lin Chen, NP is one of 4,124 family nurse practitioner records with a practice address in Maryland. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 65% of them.

  • NPI issued2021 · 65% of these records are older, 28% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated2021 · median 2019 among the 2,370 with a school on file
  • Record last updated2021 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

146 family nurse practitioner records list a practice address in Rockville

They are 146 of the 14,353 NPPES records with a practice address in Rockville, and 4,124 family nurse practitioner records in Maryland.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Gussie Assam, FNP-CRockville, MD 208501184981300
  2. Kelley Bennett, CRNPRockville, MD 208501932267903
  3. Leslie Boylan, CRNPRockville, MD 208501700937075
  4. Chibuzo Efuribe, DNP, FNP, PMHNP-BCRockville, MD 208501861776346
  5. Maria Ferraris Araneta, CRNPRockville, MD 208501679579148
  6. Andrea Hagen, CRNPRockville, MD 208501952606634
  7. Lisa Hockman, CRNPRockville, MD 208501265465165
  8. Lemolls Johny, CRNPRockville, MD 208501467639971

Common questions

What is Lin Chen, NP's NPI number?

Lin Chen, NP's National Provider Identifier (NPI) is 1457921140, issued on Jun 25, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Lin Chen, NP located?

The NPPES record lists a practice address at 9715 Medical Center Dr Ste 531, Rockville, MD, 20850. Phone: (301) 424-9723. Providers update this record themselves, so call before visiting.

How can I verify Lin Chen, NP's license?

NPPES lists Maryland license number R203912, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

How much does Lin Chen, NP prescribe under Medicare Part D?

In 2024, Lin Chen, NP had 664 Medicare Part D claims for 197 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.