NPPES file of Aug 9, 2026

John Nikolai

Certified Registered Nurse Anesthetist · Nashville, TN

John Nikolai is a certified registered nurse anesthetist with a practice address in Nashville, Tennessee, and NPI 1124794821, issued on Aug 22, 2021. Check the license (Tennessee 33158, as entered in NPPES) with the Tennessee board that licenses this profession; 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
1124794821
Name
John Nikolai
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License numbers
33158 TN
216345 TN
Self-reported in NPPES; status is on the state search
Practice location
4230 Harding Pike, Nashville, TN 37205
Phone
(615) 385-3704
Enumerated
Aug 22, 2021
Record last updated
Feb 1, 2023
Medicare enrollment
Enrolled (PECOS I20230206002879); accepts Medicare assignment
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 certified registered nurse anesthetist records → All 3,117 in Tennessee → Look up another NPI →

Also registered at 4230 Harding Pike

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

  1. Jonathan Allgood, CRNACertified Registered Nurse Anesthetist1013042910
  2. Kara Anderson, APNFamily Nurse Practitioner1619321486
  3. Christopher Ashton, CRNACertified Registered Nurse Anesthetist1487076030
  4. Ashok Babu, M.D.Surgery Physician1316142573
  5. Mitzi Baker, FNP-BCFamily Nurse Practitioner1376897785
  6. Jeanne Ballinger, M.D.Specialist1972582096

Verify John Nikolai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
    Search for license 33158    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
Find 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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Bills Medicare through one group practice

  1. Cardiovascular Anesthesiologists PCNashville, TN

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

John Nikolai among 3,117 certified registered nurse anesthetist records in Tennessee

John Nikolai is one of 3,117 certified registered nurse anesthetist records with a practice address in Tennessee. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 82% of them.

  • NPI issued2021 · 82% of these records are older, 10% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 76% of these records are
  • Graduated2022 · median 2012 among the 2,370 with a school on file
  • Record last updated2023 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

980 certified registered nurse anesthetist records list a practice address in Nashville

They are 980 of the 24,357 NPPES records with a practice address in Nashville, and 3,117 certified registered nurse anesthetist records in Tennessee.

All 3,117 in Tennessee → Every provider in Nashville → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Susan Anderson, CRNANashville, TN 372051043296262
  2. Melissa Averett, CRNANashville, TN 372051750367496
  3. John Gerome, CRNANashville, TN 372051609852342
  4. David Kent, CRNANashville, TN 372051578501607
  5. Melanie Lawless, CRNANashville, TN 372051033227764
  6. Christopher Lovelace, CRNANashville, TN 372051174509566
  7. Melanie Moran, CRNANashville, TN 372051295711596
  8. Jason Moran, CRNANashville, TN 372051598728263

Common questions

What is John Nikolai's NPI number?

John Nikolai's National Provider Identifier (NPI) is 1124794821, issued on Aug 22, 2021. An NPI identifies a provider in billing; it is not a license.

Where is John Nikolai located?

The NPPES record lists a practice address at 4230 Harding Pike, Nashville, TN, 37205. Phone: (615) 385-3704. Providers update this record themselves, so call before visiting.

How can I verify John Nikolai's license?

NPPES lists Tennessee license number 33158, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.

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.