NPPES file of Aug 9, 2026

Arthur S. Klein, M.D.

Infectious Disease Physician · East Setauket, NY

Arthur S. Klein, M.D. is an infectious disease physician with a practice address in East Setauket, New York, and NPI 1720193204, issued on Aug 21, 2006. Check the license (New York 162611, as entered in NPPES) on the NYS Education Department, Office of the Professions; 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
1720193204
Name
Arthur S. Klein
Credential
M.D.
Primary taxonomy
Infectious Disease Physician 207RI0200X
License number
162611 NY
Self-reported in NPPES; status is on the state search
Practice location
14 Technology Dr, East Setauket, NY 11733
Phone
(631) 689-5400
Enumerated
Aug 21, 2006
Record last updated
Mar 28, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(631) 689-8247
Medicaid ID
01159200 NY
Medicare enrollment
Enrolled (PECOS I20110603000307); accepts Medicare assignment
Medical or professional school
State University Of New York Downstate Medical Center, 1983
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 14 Technology Dr

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

  1. James Barsi, M.D.Pediatric Orthopaedic Surgery Physician1376710178
  2. Jennifer Castelli, P.A.Physician Assistant1184665374
  3. Brian Cruickshank, M.D.Sports Medicine (Family Medicine) Physician1255582458
  4. Arielle DemarcoPhysician Assistant1295290013
  5. Nicholas DivarisOrthopaedic Trauma Physician1023065380
  6. Kristen Esposito, P.A.Medical Physician Assistant1568891547

Verify Arthur S. Klein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 162611
    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 New York 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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76% fewer Medicare Part D claims than the average infectious disease physician in 2024

168 Medicare Part D claims for 43 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.

  1. Arthur Klein168
  2. Specialty average689

Most prescribed

  1. Meropenem28 claims
  2. Ertapenem20 claims
  3. Cephalexin18 claims
  4. Vancomycin Hcl17 claims
  5. Amoxicillin13 claims
  6. Amoxicillin-Clavulanate Potass11 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 MIPS final score for 2023 (Medicare payment program): 91.3 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score74.9
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%91.7
  4. Improvement activities40 of 40 points · 15%100.0

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

Bills Medicare through one group practice

  1. North Shore-Lij Medical PCBay Shore, NY

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

Arthur S. Klein among 970 infectious disease physician records in New York

Arthur S. Klein, M.D. is one of 970 infectious disease physician records with a practice address in New York. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 54% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1983 · median 2002 among the 624 with a school on file
  • Record last updated2013 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Infectious Disease Physician providers in New York

There are 970 infectious disease physician records in New York.

The 8 infectious disease physician records with the nearest ZIP codes

  1. Jack Fuhrer, M.D.East Setauket, NY 117331790710929
  2. David Galinkin, D.O.East Setauket, NY 117331699880104
  3. William Greene, M.D.East Setauket, NY 117331013942747
  4. Jonathan Krohn, M.D.East Setauket, NY 117331235244724
  5. Benjamin Luft, M.D.East Setauket, NY 117331497770655
  6. Nancy Miller, MDEast Setauket, NY 117331366593832
  7. Philip Nizza, D.O.East Setauket, NY 117331912012410
  8. Juby Roy, DOEast Setauket, NY 117331932785524

Common questions

What is Arthur S. Klein, M.D.'s NPI number?

Arthur S. Klein, M.D.'s National Provider Identifier (NPI) is 1720193204, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Arthur S. Klein, M.D. located?

The NPPES record lists a practice address at 14 Technology Dr, East Setauket, NY, 11733. Phone: (631) 689-5400. Providers update this record themselves, so call before visiting.

How can I verify Arthur S. Klein, M.D.'s license?

NPPES lists New York license number 162611, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Arthur S. Klein, M.D. prescribe under Medicare Part D?

In 2024, Arthur S. Klein, M.D. had 168 Medicare Part D claims for 43 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.

What is Arthur S. Klein, M.D.'s MIPS final score?

The 2023 MIPS final score is 91.3 of 100. 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.