NPPES file of Aug 9, 2026

Karen Tapawan Chen, M.D.

Internal Medicine Physician · Lutherville, MD

Karen Tapawan Chen, M.D. is an internal medicine physician with a practice address in Lutherville, Maryland, and NPI 1043476716, issued on Aug 1, 2008. Check the license on the Maryland Board of Physicians; 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
1043476716
Name
Karen Tapawan Chen
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
125053912 IL
Self-reported in NPPES; status is on the state search
Practice location
1447 York RD, Lutherville, MD 21093
Phone
(410) 339-5500
Enumerated
Aug 1, 2008
Record last updated
Jun 21, 2021 (not updated in 5 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 1447 York RD

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

  1. Amita Bagal, M.D.Plastic Surgery Within the Head and Neck (Plastic Surgery) Physician1114997301
  2. Binu Batajoo-Shrestha, M.DInternal Medicine Physician1972850980
  3. Marilyn Cox, PHARMD, BCPS, CDEPharmacotherapy Pharmacist1093843435
  4. Innocent EgbuninePharmacist1598936296
  5. Kristy Golden, D.P.MFoot & Ankle Surgery Podiatrist1154616431
  6. Peter Greene, MDInternal Medicine Physician1982769220

Verify Karen Tapawan Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck 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 Maryland license search

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86% more Medicare Part D claims than the average internal medicine physician in 2024

5,898 Medicare Part D claims for 2,934 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Karen Chen5,898
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium738 claims
  2. Amlodipine Besylate441 claims
  3. Losartan Potassium305 claims
  4. Lisinopril262 claims
  5. Levothyroxine Sodium224 claims
  6. Metformin Hcl209 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.

65 internal medicine physician records list a practice address in Lutherville

They are 65 of the 952 NPPES records with a practice address in Lutherville, and 3,904 internal medicine physician records in Maryland.

All 65 in Lutherville → All 3,904 in Maryland → Every provider in Lutherville →

Other internal medicine physician records in Maryland

  1. Eduardo Abarca Rojas, M.D.Parkville, MD1538447628
  2. Rasheed Abassi, M.D.Clinton, MD1376608620
  3. Ghulam Abbas, MDFrederick, MD1477658045
  4. Shamima Abbas, MDKensington, MD1750445896
  5. Nourelhuda Abbas Hamed, MDSilver Spring, MD1699339473
  6. Arsalan Abbasi, MDWestminster, MD1942762604
  7. Hamdi AbdeenGaithersburg, MD1245972413
  8. Mukemil Abdella, M.D.Glenn Dale, MD1871603381
  9. Suzan Abdo, MDClarksville, MD1588631824
  10. Madeeha Abdul GhaffarElkton, MD1194276063

Common questions

What is Karen Tapawan Chen, M.D.'s NPI number?

Karen Tapawan Chen, M.D.'s National Provider Identifier (NPI) is 1043476716, issued on Aug 1, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Karen Tapawan Chen, M.D. located?

The NPPES record lists a practice address at 1447 York RD, Lutherville, MD, 21093. Phone: (410) 339-5500. Providers update this record themselves, so call before visiting.

How can I verify Karen Tapawan Chen, M.D.'s license?

Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Karen Tapawan Chen, M.D. prescribe under Medicare Part D?

In 2024, Karen Tapawan Chen, M.D. had 5,898 Medicare Part D claims for 2,934 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.