NPPES file of Aug 9, 2026

William Regan, M.D.

Psychiatry Physician · Nashville, TN

William Regan, M.D. is a psychiatry physician with a practice address in Nashville, Tennessee, and NPI 1164576955, issued on Jan 22, 2007. Check the license (Tennessee MD0000014753, as entered in NPPES) on the Tennessee Board of Medical Examiners; 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
1164576955
Name
William Regan
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License numbers
MD0000014753 TN
036177893 IL
2025019372 MO
Self-reported in NPPES; status is on the state search
Practice location
221 Stewarts Ferry Pike, Nashville, TN 37214
Phone
(615) 902-7461
Enumerated
Jan 22, 2007
Record last updated
Feb 25, 2026
Medicare enrollment
Enrolled (PECOS I20251212002265); accepts Medicare assignment
Medical or professional school
University Of Louisville School Of Medicine, 1982
Telehealth
Offers telehealth (CMS)
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 psychiatry physician records → All 731 in Tennessee → Look up another NPI →

Also registered at 221 Stewarts Ferry Pike

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

  1. Virginia Calderon, M.D.Psychiatry Physician1093861098
  2. Tara Duffie, DNP, APRNPsychiatric/Mental Health Nurse Practitioner1790398337
  3. Gamal Eskander, MDFamily Medicine Physician1659351542
  4. Jodi Essary, PMHNPPsychiatric/Mental Health Nurse Practitioner1699414946
  5. Rokeya Farooque, M.D.Psychiatry Physician1992851919
  6. Kelly Feldhaus, NPFamily Nurse Practitioner1801931639

Verify William Regan 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 MD0000014753    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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Bills Medicare through 2 group practices

  1. Mindcare Solutions PCSalt Lake City, UT
  2. Virtual Inpatient Psychiatry Physicians Behavioral Network LLCDeland, FL

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

William Regan among 731 psychiatry physician records in Tennessee

William Regan, M.D. is one of 731 psychiatry physician records with a practice address in Tennessee. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.

  • NPI issued2007 · 47% of these records are older, 38% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated1982 · median 2003 among the 329 with a school on file
  • Record last updated2026 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in Tennessee

There are 731 psychiatry physician records in Tennessee.

All 731 in Tennessee → Every provider in Nashville → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Virginia Calderon, M.D.Nashville, TN 372141093861098
  2. Rokeya Farooque, M.D.Nashville, TN 372141992851919
  3. Colleen Friddell, M.D.Nashville, TN 372141942332499
  4. Nikolay Horozov, M.D.Nashville, TN 372141194756429
  5. Mohammad Jaleel, M.DNashville, TN 372141942585971
  6. Alexandre Koumtchev, M.D.Nashville, TN 372141790873339
  7. William Mays, MDNashville, TN 372141780738815
  8. Marianne Raynes, APRNNashville, TN 372141760900864

Common questions

What is William Regan, M.D.'s NPI number?

William Regan, M.D.'s National Provider Identifier (NPI) is 1164576955, issued on Jan 22, 2007. An NPI identifies a provider in billing; it is not a license.

Where is William Regan, M.D. located?

The NPPES record lists a practice address at 221 Stewarts Ferry Pike, Nashville, TN, 37214. Phone: (615) 902-7461. Providers update this record themselves, so call before visiting.

How can I verify William Regan, M.D.'s license?

NPPES lists Tennessee license number MD0000014753, 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. 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.