NPPES file of Aug 9, 2026

Frederick J. Ergen, M.D.

Emergency Medicine Physician · Knoxville, TN

Frederick J. Ergen, M.D. is an emergency medicine physician with a practice address in Knoxville, Tennessee, and NPI 1518927466, issued on Mar 24, 2006. Check the license (Tennessee 012250, as entered in NPPES) on the Tennessee Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1518927466
Name
Frederick J. Ergen
Credential
M.D.
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
012250 TN
Self-reported in NPPES; status is on the state search
Practice location
900 E Oak Hill Ave, Knoxville, TN 37917
Phone
(865) 545-8000
Enumerated
Mar 24, 2006
Record last updated
Jul 13, 2026
Fax
(423) 971-6732
Medicaid ID
3197263 TN
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest emergency medicine physician records → All 1,174 in Tennessee → Look up another NPI →

Also registered at 900 E Oak Hill Ave

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

  1. David Ange, M.D.Radiation Oncology Physician1992853667
  2. Sara Babb, RDRegistered Dietitian1477068013
  3. Jason BarnardOccupational Therapist1821488164
  4. Annette Bongers, FNPFamily Nurse Practitioner1790067791
  5. Srinivas Boppana, MDRadiation Oncology Physician1609818269
  6. William Campbell, M.D.Emergency Medicine Physician1649219239

Verify Frederick J. Ergen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical Examiners
    Search for license 012250    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 Tennessee 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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Frederick J. Ergen among 1,174 emergency medicine physician records in Tennessee

Frederick J. Ergen, M.D. is one of 1,174 emergency medicine physician records with a practice address in Tennessee. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.

  • NPI issued2006 · 5% of these records are older, 54% newer
  • In a Medicare fileNo · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 57% of these records are
  • Record last updated2026 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in Tennessee

There are 1,174 emergency medicine physician records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,174 in Tennessee → Every provider in Knoxville → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. William Campbell, M.D.Knoxville, TN 379171649219239
  2. Lindsey Harrell, MDKnoxville, TN 379171942494398
  3. Mackenzie Hay, M.D.Knoxville, TN 379171407010358
  4. John Irwin, M.D.Knoxville, TN 379171215982459
  5. Marwin Martinez, M.D.Knoxville, TN 379171396784419
  6. Reynald Simmons, M.D.Knoxville, TN 379171528007150
  7. Charles Adams, M.D.Knoxville, TN 379161093810863
  8. Gerald Blossom, M.D.Knoxville, TN 379161568499820

Common questions

What is Frederick J. Ergen, M.D.'s NPI number?

Frederick J. Ergen, M.D.'s National Provider Identifier (NPI) is 1518927466, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Frederick J. Ergen, M.D. located?

The NPPES record lists a practice address at 900 E Oak Hill Ave, Knoxville, TN, 37917. Phone: (865) 545-8000. Providers update this record themselves, so call before visiting.

How can I verify Frederick J. Ergen, M.D.'s license?

NPPES lists Tennessee license number 012250, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. 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. 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.