NPPES file of Aug 9, 2026

Terri Lynn Williams, MD

Emergency Medicine Physician · Saginaw, MI

Terri Lynn Williams, MD is an emergency medicine physician with a practice address in Saginaw, Michigan, and NPI 1720114507, issued on Feb 26, 2007. Check the license (Michigan 4301065469, as entered in NPPES) on the Michigan Board of Medicine (LARA); 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
1720114507
Name
Terri Lynn Williams
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
4301065469 MI
Self-reported in NPPES; status is on the state search
Practice location
1500 Weiss St, Saginaw, MI 48602
Phone
(989) 497-2500
Enumerated
Feb 26, 2007
Record last updated
Mar 30, 2025
Medicaid ID
3145253 MI
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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Also registered at 1500 Weiss St

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

  1. Margaret Abbenante, LMSW,ACSWClinical Social Worker1255367967
  2. Mariam Alghaiti, PHARMDPharmacist1366395535
  3. Alexis Anthony, PHARMDPharmacist1407738222
  4. Melissa AppoldGeriatric Pharmacist1457867897
  5. Garria Arnold, DNP CFNPFamily Nurse Practitioner1932164415
  6. Andrew Aylsworth, PHARM.D,.Pharmacist1407264757

Verify Terri Lynn Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301065469
    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 Michigan license search

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95% fewer Medicare Part D claims than the average emergency medicine physician in 2024

11 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. Terri Williams11
  2. Specialty average226

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.

Terri Lynn Williams among 3,083 emergency medicine physician records in Michigan

Terri Lynn Williams, MD is one of 3,083 emergency medicine physician records with a practice address in Michigan. 82% 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 23% of them.

  • NPI issued2007 · 23% of these records are older, 67% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 63% of these records are
  • Record last updated2025 · 53% 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 Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

182 emergency medicine physician records list a practice address in Saginaw

They are 182 of the 6,008 NPPES records with a practice address in Saginaw, and 3,083 emergency medicine physician records in Michigan.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Mary Arvanitis, DOSaginaw, MI 486021295722841
  2. Andrew Bazakis, M.D.Saginaw, MI 486021114914603
  3. Kevin Carnahan, DOSaginaw, MI 486021124093174
  4. Kathleen Cowling, DOSaginaw, MI 486021790772283
  5. Matthew Deibel, MDSaginaw, MI 486021427019652
  6. Frederick Dunham, MDSaginaw, MI 486021598799082
  7. Allison Gormley, DOSaginaw, MI 486021912955014
  8. Kirsten Guenther, M.D.Saginaw, MI 486021861506156

Common questions

What is Terri Lynn Williams, MD's NPI number?

Terri Lynn Williams, MD's National Provider Identifier (NPI) is 1720114507, issued on Feb 26, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Terri Lynn Williams, MD located?

The NPPES record lists a practice address at 1500 Weiss St, Saginaw, MI, 48602. Phone: (989) 497-2500. Providers update this record themselves, so call before visiting.

How can I verify Terri Lynn Williams, MD's license?

NPPES lists Michigan license number 4301065469, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Terri Lynn Williams, MD prescribe under Medicare Part D?

In 2024, Terri Lynn Williams, MD had 11 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.