NPPES file of Aug 9, 2026

Russell Scott Holliday, DO

Emergency Medicine Physician · Derby, CT

Russell Scott Holliday, DO is an emergency medicine physician with a practice address in Derby, Connecticut, and NPI 1598884900, issued on Mar 28, 2007. Check the license (Connecticut 043634, 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
1598884900
Name
Russell Scott Holliday
Credential
DO
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
043634 CT
Self-reported in NPPES; status is on the state search
Practice location
130 Division St, Derby, CT 06418
Phone
(203) 732-7403
Enumerated
Mar 28, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080822000544); accepts Medicare assignment
Medical or professional school
Kansas City University Of Physicians And Surgeons, 2003
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 130 Division St

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

  1. Mohammed Abbas, MDStudent in an Organized Health Care Education/Training Program1215687991
  2. Jenny Abdulkarim, MDStudent in an Organized Health Care Education/Training Program1033795729
  3. Ahmed AbdullahStudent in an Organized Health Care Education/Training Program1255034690
  4. Binta Abdullahi, MDStudent in an Organized Health Care Education/Training Program1942051057
  5. Nicholas Adams, NPNurse Practitioner1093599979
  6. Divya Aggarwal, MDStudent in an Organized Health Care Education/Training Program1154558401

Verify Russell Scott Holliday in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining Board
    Search for license 043634
    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

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30% fewer Medicare Part D claims than the average emergency medicine physician in 2024

158 Medicare Part D claims for 111 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Russell Holliday158
  2. Specialty average226

Most prescribed

  1. Prednisone20 claims
  2. Hydrocodone-Acetaminophen17 claims
  3. Ondansetron Hcl13 claims
  4. Cephalexin12 claims
  5. Doxycycline Hyclate12 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): 78.9 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 score81.6
  2. Costout of 100 · 30%47.9
  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 one group practice

  1. St Lukes Clinic LLCTwin Falls, ID

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

8 emergency medicine physician records list a practice address in Derby

They are 8 of the 453 NPPES records with a practice address in Derby, and 846 emergency medicine physician records in Connecticut.

Other emergency medicine physician records in Connecticut

  1. Carol Abbatiello, D.O.Hartford, CT1275579732
  2. Lincoln Abbott, MDHartford, CT1518965433
  3. Wayne Abrahams, MDWaterbury, CT1508886227
  4. Theresa Adams, M.D.New London, CT1457678138
  5. Irini Agaraj, MDNew Haven, CT1184208431
  6. Doreen Agboh, MDNew Haven, CT1275153868
  7. Ronald Agnes, M.D.Simsbury, CT1548399728
  8. Julius Patrick Aguas, DOHartford, CT1245736321
  9. Saeed Ahghari, MDEast Hartford, CT1427140862
  10. Teresa Allen, M.D.Putnam, CT1720047921

Common questions

What is Russell Scott Holliday, DO's NPI number?

Russell Scott Holliday, DO's National Provider Identifier (NPI) is 1598884900, issued on Mar 28, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Russell Scott Holliday, DO located?

The NPPES record lists a practice address at 130 Division St, Derby, CT, 06418. Phone: (203) 732-7403. Providers update this record themselves, so call before visiting.

How can I verify Russell Scott Holliday, DO's license?

NPPES lists Connecticut license number 043634, 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 Russell Scott Holliday, DO prescribe under Medicare Part D?

In 2024, Russell Scott Holliday, DO had 158 Medicare Part D claims for 111 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is Russell Scott Holliday, DO's MIPS final score?

The 2023 MIPS final score is 78.9 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.