NPPES file of Aug 9, 2026

William R. Siegart, DO

Emergency Medicine Physician · Exeter, NH

William R. Siegart, DO is an emergency medicine physician with a practice address in Exeter, New Hampshire, and NPI 1174698419, issued on Nov 21, 2006. Check the license (New Hampshire 9436, as entered in NPPES) on the New Hampshire Board of Medicine; 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
1174698419
Name
William R. Siegart
Credential
DO
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
9436 NH
Self-reported in NPPES; status is on the state search
Practice location
5 Alumni Dr, Exeter, NH 03833
Phone
(603) 580-6793
Enumerated
Nov 21, 2006
Record last updated
May 4, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(603) 580-7006
Medicaid IDs
0162108 MA
30221919 NH
299790099 NH
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 351 in New Hampshire → Look up another NPI →

Also registered at 5 Alumni Dr

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

  1. Elizabeth Andrada, MDEmergency Medicine Physician1891853859
  2. Lisa Armstrong, APRNNurse Practitioner1356738876
  3. Pamela Binnie, NPFamily Nurse Practitioner1972869824
  4. Heidi Blake, M.D.Emergency Medical Services (Emergency Medicine) Physician1639109267
  5. Nicole Boswell, CRNACertified Registered Nurse Anesthetist1871728600
  6. Elaina Branco, CRNACertified Registered Nurse Anesthetist1598388266

Verify William R. Siegart in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 9436    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 Hampshire 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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William R. Siegart among 351 emergency medicine physician records in New Hampshire

William R. Siegart, DO is one of 351 emergency medicine physician records with a practice address in New Hampshire. 76% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 53% newer
  • In a Medicare fileNo · 76% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2008 · 62% 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 New Hampshire 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 New Hampshire

There are 351 emergency medicine physician records in New Hampshire. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 351 in New Hampshire → Every provider in Exeter → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Elizabeth Andrada, MDExeter, NH 038331891853859
  2. Sean Buturla, MDExeter, NH 038331689984973
  3. Mark Josephs, MDExeter, NH 038331174532659
  4. Michelle Nathan, MDExeter, NH 038331619951373
  5. Lauren Vignaly, MDExeter, NH 038331992447841
  6. Philip Voss, M.D.Exeter, NH 038331023065273
  7. Leigh Wheeler, MDHampton, NH 038421215037924
  8. Owen Beams, MDDover, NH 038201962822023

Common questions

What is William R. Siegart, DO's NPI number?

William R. Siegart, DO's National Provider Identifier (NPI) is 1174698419, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William R. Siegart, DO located?

The NPPES record lists a practice address at 5 Alumni Dr, Exeter, NH, 03833. Phone: (603) 580-6793. Providers update this record themselves, so call before visiting.

How can I verify William R. Siegart, DO's license?

NPPES lists New Hampshire license number 9436, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. 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.