NPPES file of Aug 9, 2026

Karen D. Ernst, M.D.

Diagnostic Radiology Physician · Glens Falls, NY

Karen D. Ernst, M.D. is a diagnostic radiology physician with a practice address in Glens Falls, New York, and NPI 1851386403, issued on Sep 20, 2005. Check the license (New York 208139, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1851386403
Name
Karen D. Ernst
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
208139 NY
Self-reported in NPPES; status is on the state search
Practice location
North Country Imaging Center, Glens Falls, NY 12801
Phone
(518) 793-1000
Enumerated
Sep 20, 2005
Record last updated
Jun 22, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(518) 793-3125
Medicaid ID
01881305 NY
Medicare enrollment
Enrolled (PECOS I20100921000911); accepts Medicare assignment
Medical or professional school
Albany Medical College Of Union University, 1991
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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8 nearest diagnostic radiology physician records → All 3,146 in New York → Look up another NPI →

Verify Karen D. Ernst 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 208139    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

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Bills Medicare through 4 group practices

  1. Capital Imaging AssociatesLatham, NY
  2. Hudson Valley Diagnostic Imaging PLLCNew Windsor, NY
  3. Medical Diagnostic Imaging, PLLCWappingers Falls, NY
  4. New Rochelle Radiology Associates PCNew Rochelle, NY

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

Karen D. Ernst among 3,146 diagnostic radiology physician records in New York

Karen D. Ernst, M.D. is one of 3,146 diagnostic radiology physician records with a practice address in New York. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1991 · median 2002 among the 2,169 with a school on file
  • Record last updated2010 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in New York

There are 3,146 diagnostic radiology physician records in New York.

All 3,146 in New York → Every provider in Glens Falls → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Kristin Byrne, MDGlens Falls, NY 128011194809772
  2. Sunjay Verma, MDGlens Falls, NY 128011285625244
  3. Aaron Antiles, M.D.Queensbury, NY 128041558356204
  4. Daniel Burke, M.D.Queensbury, NY 128041962497560
  5. David Dolinsky, M.D.Queensbury, NY 128041427240126
  6. Guangzu Gao, M.D.Queensbury, NY 128041891131710
  7. David Kelly, M.D.Queensbury, NY 128041124013727
  8. Alaa Mahmoud, MDQueensbury, NY 128041972981959

Common questions

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

Karen D. Ernst, M.D.'s National Provider Identifier (NPI) is 1851386403, issued on Sep 20, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Karen D. Ernst, M.D. located?

The NPPES record lists a practice address at North Country Imaging Center, Glens Falls, NY, 12801. Phone: (518) 793-1000. Providers update this record themselves, so call before visiting.

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

NPPES lists New York license number 208139, 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.

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.