NPPES file of Aug 9, 2026

Byron T. Chen, RPH

Pharmacist · Washington, DC

Byron T. Chen, RPH is a pharmacist with a practice address in Washington, District of Columbia, and NPI 1891980702, issued on Sep 13, 2007. Check the license (District of Columbia PHA3141, as entered in NPPES) with the District of Columbia 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
1891980702
Name
Byron T. Chen
Credential
RPH
Primary taxonomy
Pharmacist 183500000X
License number
PHA3141 DC
Self-reported in NPPES; status is on the state search
Practice location
5001 New Hampshire Ave NW, Washington, DC 20011
Phone
(202) 726-3100
Enumerated
Sep 13, 2007
Record last updated
Sep 13, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 5001 New Hampshire Ave NW

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

  1. Molly Carr, RPHPharmacist1487859948
  2. Kimberly Miller, PHARM DPharmacist1902171994
  3. David PosnerPharmacist1215418710

Verify Byron T. Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
    Search for license PHA3141
    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 District of Columbia license search

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Most of these Medicare Part D claims are vaccines, 93% of the cost of the top drugs

121 Medicare Part D claims for 106 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.

  1. Byron Chen121
  2. Specialty average119

Most prescribed

Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.

  1. Shingrix45 claims
  2. Arexvy39 claims
  3. Boostrix Tdap24 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.

Byron T. Chen among 642 pharmacist records in District of Columbia

Byron T. Chen, RPH is one of 642 pharmacist records with a practice address in District of Columbia. 2% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 10% of them.

  • NPI issued2007 · 10% of these records are older, 83% newer
  • In a Medicare fileYes · 2% of these records are
  • In the CMS Doctors and Clinicians fileNo · 0% of these records are
  • Record last updated2007 · 73% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

630 pharmacist records list a practice address in Washington

They are 630 of the 45,857 NPPES records with a practice address in Washington, and 642 pharmacist records in District of Columbia.

The 8 pharmacist records with the nearest ZIP codes

  1. Molly Carr, RPHWashington, DC 200111487859948
  2. Blair Jackson, PHARMDWashington, DC 200111295872778
  3. Angela Johnson, PHARMD, MBA, MSWashington, DC 200111013373612
  4. Tsedey Kassaye BetreWashington, DC 200111043627557
  5. Tyra Mallory, RPHWashington, DC 200111831493121
  6. Mekedes MenisherWashington, DC 200111053628123
  7. Kimberly Miller, PHARM DWashington, DC 200111902171994
  8. Kayode Ogunnaike, R.PH, PDWashington, DC 200111114221652

Common questions

What is Byron T. Chen, RPH's NPI number?

Byron T. Chen, RPH's National Provider Identifier (NPI) is 1891980702, issued on Sep 13, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Byron T. Chen, RPH located?

The NPPES record lists a practice address at 5001 New Hampshire Ave NW, Washington, DC, 20011. Phone: (202) 726-3100. Providers update this record themselves, so call before visiting.

How can I verify Byron T. Chen, RPH's license?

NPPES lists District of Columbia license number PHA3141, as entered by the provider. Search the District of Columbia board that licenses this profession; the NPPES record confirms identity only.

How much does Byron T. Chen, RPH prescribe under Medicare Part D?

In 2024, Byron T. Chen, RPH had 121 Medicare Part D claims for 106 beneficiaries; the average among pharmacist prescribers was 119. 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.