NPPES file of Aug 9, 2026

William Diebold, MD

Psychiatry Physician · Johnson City, TN

William Diebold, MD is a psychiatry physician with a practice address in Johnson City, Tennessee, and NPI 1770573511, issued on Oct 24, 2005. Check the license (Tennessee MD26973, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770573511
Name
William Diebold
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
MD26973 TN
Self-reported in NPPES; status is on the state search
Practice location
701 Med Tech Pkwy Ste 201, Johnson City, TN 37604
Phone
(423) 302-3480
Enumerated
Oct 24, 2005
Record last updated
Dec 12, 2025
Medicaid ID
Q000598 TN
Medicare enrollment
Enrolled (PECOS I20050516000932); accepts Medicare assignment
Medical or professional school
University Of Louisville School Of Medicine, 1991
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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Also registered at 701 Med Tech Pkwy Ste 201

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

  1. Lisa Bausell, LPC, CEAPProfessional Counselor1932400405
  2. Macy DavisMental Health Counselor1982571717
  3. Cassandra FreschiMental Health Counselor1649144247
  4. Kiri HammProfessional Counselor1487345559
  5. Cassie HeardPsychiatric/Mental Health Nurse Practitioner1821921784
  6. Akasha McReynoldsClinical Social Worker1508480971

Verify William Diebold 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 MD26973
    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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3.7 times the Medicare Part D claims of the average psychiatry physician in 2024

3,653 Medicare Part D claims for 193 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.

  1. William Diebold3,653
  2. Specialty average1,000

Most prescribed

  1. Alprazolam573 claims
  2. Quetiapine Fumarate362 claims
  3. Clonazepam290 claims
  4. Gabapentin226 claims
  5. Lorazepam196 claims
  6. Sertraline Hcl162 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $878.76

47 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Diebold$878.76
  2. Specialty average$4,954.93

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Takoma Regional Hospital IncGreeneville, TN

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

William Diebold among 731 psychiatry physician records in Tennessee

William Diebold, MD 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 92% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated1991 · median 2003 among the 329 with a school on file
  • Record last updated2025 · 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).

45 psychiatry physician records list a practice address in Johnson City

They are 45 of the 3,807 NPPES records with a practice address in Johnson City, and 731 psychiatry physician records in Tennessee.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Fernando Bendfeldt, M.D.Johnson City, TN 376041205830536
  2. Brian Bonfardin, MDJohnson City, TN 376041356322515
  3. Shambhavi Chandraiah, M.D.Johnson City, TN 376041760439392
  4. John Fenley, MDJohnson City, TN 376041568537751
  5. Charles Gaines, DOJohnson City, TN 376041649236753
  6. Donald Henson, M.D.Johnson City, TN 376041245265925
  7. Rodney Houghton, MDJohnson City, TN 376041215993332
  8. Firoz Munshi, MDJohnson City, TN 376041356465801

Common questions

What is William Diebold, MD's NPI number?

William Diebold, MD's National Provider Identifier (NPI) is 1770573511, issued on Oct 24, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William Diebold, MD located?

The NPPES record lists a practice address at 701 Med Tech Pkwy Ste 201, Johnson City, TN, 37604. Phone: (423) 302-3480. Providers update this record themselves, so call before visiting.

How can I verify William Diebold, MD's license?

NPPES lists Tennessee license number MD26973, 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.

How much does William Diebold, MD prescribe under Medicare Part D?

In 2024, William Diebold, MD had 3,653 Medicare Part D claims for 193 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions 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.

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.