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Internal Medicine

Judy A. Kleinstein, MD

Works at hospitals in New Haven, CT · Connecticut

Summary

Dr. Judy A. Kleinstein, MD is an internal medicine doctor at 150 Sargent Dr, Suite 1, New Haven, CT 06511. Phone: (203) 781-4444. Accepts Medicare assignment. In 2024, Judy A. Kleinstein had 38 Original Medicare patients and 289 services. NPI 1831187319. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 150 Sargent Dr, Suite 1, New Haven, CT 06511 · Directions
  • Phone: (203) 781‑4444
  • Medicare: Accepts Medicare assignment
  • Hospital: Yale-New Haven Hospital
  • Group practice: Northeast Medical Group Inc
  • Medical school: Albert Einstein College Of Medicine Of Yeshiva University · graduated 1999 (27 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Judy A. Kleinstein, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Judy A. Kleinstein accept Medicare assignment?
Yes. Medicare's clinician data says Judy A. Kleinstein accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Judy A. Kleinstein see?
In 2024, CMS data shows 38 Original Medicare patients and 289 services for Judy A. Kleinstein. This counts Original Medicare only and measures volume, not quality.
What is Judy A. Kleinstein's NPI number?
1831187319. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Judy A. Kleinstein, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients38
Services billed to Medicare289
Different services or procedures31
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)79 services
  2. Blood glucose (sugar) test performed by hand-held instrument (82962)56 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)20 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)20 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure71%
  • Arthritis53%
  • Diabetes42%
  • COPD32%
  • Depression29%

Hospitals where Judy A. Kleinstein works

Medicare's Facility Affiliation Data lists Judy A. Kleinstein at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Judy A. Kleinstein is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Judy A. Kleinstein as a member of this group (CMS data updated October 2, 2026).

  • Northeast Medical Group Inc1,360 clinicians in the group

Specialties

Find other Internal Medicine doctors in Connecticut →

Other internal medicine doctors in New Haven

Clinicians with the same Medicare primary specialty in New Haven, CT — not a recommendation.

All internal medicine doctors in New Haven →

Other clinicians in Northeast Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolAlbert Einstein College Of Medicine Of Yeshiva University
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1831187319
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians