NPPES file of Aug 9, 2026

Regina Eum, MD

Physical Medicine & Rehabilitation Physician · Fairfield, CT

Regina Eum, MD is a physical medicine & rehabilitation physician with a practice address in Fairfield, Connecticut, and NPI 1003067604, issued on Oct 1, 2008. Check the license (Connecticut 053139, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1003067604
Name
Regina Eum
Credential
MD
Primary taxonomy
Physical Medicine & Rehabilitation Physician 208100000X
License number
053139 CT
Self-reported in NPPES; status is on the state search
Practice location
305 Black Rock Tpke, Fairfield, CT 06825
Phone
(203) 337-2600
Enumerated
Oct 1, 2008
Record last updated
Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(203) 337-2622
Medicare enrollment
Enrolled (PECOS I20140912000245); accepts Medicare assignment
Medical or professional school
Columbia University College Of Physicians And Surgeons, 2008
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 305 Black Rock Tpke

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

  1. Rizwan Ahmad, MDSports Medicine (Family Medicine) Physician1831477330
  2. Cindy Anderson, PA-CSurgical Physician Assistant1558381582
  3. Sharon Andruskiwec, PT CHTHand Physical Therapist1669696803
  4. John Awad, MDOrthopaedic Surgery Physician1447280052
  5. Henry Backe, MDOrthopaedic Hand Surgery Physician1457396145
  6. Roberto Balado, PA-CPhysician Assistant1811708589

Verify Regina Eum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 053139
    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 Connecticut 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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46% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024

390 Medicare Part D claims for 105 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D.

  1. Regina Eum390
  2. Specialty average727

Most prescribed

  1. Gabapentin64 claims
  2. Pregabalin51 claims
  3. Methocarbamol42 claims
  4. Duloxetine Hcl34 claims
  5. Tizanidine Hcl25 claims
  6. Baclofen20 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 84.5 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score79.3
  2. Costout of 100 · 30%59.6
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT
  2. Rehabilitation Associates IncFairfield, CT

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

Regina Eum among 192 physical medicine & rehabilitation physician records in Connecticut

Regina Eum, MD is one of 192 physical medicine & rehabilitation physician records with a practice address in Connecticut. 56% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 41% of them.

  • NPI issued2008 · 41% of these records are older, 55% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated2008 · median 2004 among the 98 with a school on file
  • Record last updated2018 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physical Medicine & Rehabilitation Physician providers in Connecticut

There are 192 physical medicine & rehabilitation physician records in Connecticut.

The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes

  1. Michael Brennan, M.D.Fairfield, CT 068241538117049
  2. Elizabeth Brennan, M.D.Fairfield, CT 068241144278359
  3. Angela McErlainFairfield, CT 068241639765928
  4. Andrea Pezzimenti, PTAFairfield, CT 068241972341121
  5. Christina Rescsanski, RPTFairfield, CT 068241689804163
  6. Marc Warman, M.D.Fairfield, CT 068241386626133
  7. Andrew Yuan, D.O.Fairfield, CT 068241689787368
  8. Janet Freedman, M.D.Greenwich, CT 068301326062233

Common questions

What is Regina Eum, MD's NPI number?

Regina Eum, MD's National Provider Identifier (NPI) is 1003067604, issued on Oct 1, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Regina Eum, MD located?

The NPPES record lists a practice address at 305 Black Rock Tpke, Fairfield, CT, 06825. Phone: (203) 337-2600. Providers update this record themselves, so call before visiting.

How can I verify Regina Eum, MD's license?

NPPES lists Connecticut license number 053139, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Regina Eum, MD prescribe under Medicare Part D?

In 2024, Regina Eum, MD had 390 Medicare Part D claims for 105 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. Part D covers Medicare prescriptions only.

What is Regina Eum, MD's MIPS final score?

The 2023 MIPS final score is 84.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.