Lynn A. Toaz, D.O.
Family Medicine Physician · Ionia, MI
Lynn A. Toaz, D.O. is a family medicine physician with a practice address in Ionia, Michigan, and NPI 1912924895, issued on Jul 16, 2006. Check the license (Michigan LT011641, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Lynn A. Toaz
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- LT011641 MI
Self-reported in NPPES; status is on the state search - Practice location
- 550 E Washington St, Ionia, MI 48846
- Phone
- (616) 527-8293
- Enumerated
- Jul 16, 2006
- Record last updated
- Jan 24, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (616) 527-5718
- Medicare enrollment
- Enrolled (PECOS I20100129000022); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1992
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Also registered at 550 E Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathon Baxter, PA-CPhysician Assistant1417423526
- Victoria Hufnagel, LMSWClinical Social Worker1063354363
- Connie Huhn, NPFamily Nurse Practitioner1780186254
- Ronald Hyde, D.O.Surgery Physician1215127162
- Amy Jentz, M.D.Surgery Physician1831204601
- Aimee Johnson, FNP-CFamily Nurse Practitioner1710317763
Verify Lynn A. Toaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license LT011641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% more Medicare Part D claims than the average family medicine physician in 2024
6,379 Medicare Part D claims for 469 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 114 claims were for opioids.
Most prescribed
- Levothyroxine Sodium334 claims
- Omeprazole288 claims
- Rosuvastatin Calcium279 claims
- Amlodipine Besylate250 claims
- Atorvastatin Calcium236 claims
- Losartan Potassium162 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: $212.50
11 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Sparrow Ionia HospitalIonia, MI · Critical Access Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Lynn A. Toaz among 6,013 family medicine physician records in Michigan
Lynn A. Toaz, D.O. is one of 6,013 family medicine physician records with a practice address in Michigan. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2008 among the 3,493 with a school on file
- Record last updated2008 · 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 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Ionia
They are 12 of the 425 NPPES records with a practice address in Ionia, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Ionia → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- William Cunningham, D.O.Ionia, MI 488461760447668
- Michael Estes, M.D.Ionia, MI 488461851341499
- Sheila Gendich, M.D.Ionia, MI 488461124018536
- Donald Gingerich, D.O.Ionia, MI 488461043311772
- John Hildebrandt, M.D.Ionia, MI 488461598751968
- Vakar Khan, MDIonia, MI 488461548790561
- Alifa Mohamed, MDIonia, MI 488461245751908
- Jeremiah Palmer, DOIonia, MI 488461144966763
Common questions
What is Lynn A. Toaz, D.O.'s NPI number?
Lynn A. Toaz, D.O.'s National Provider Identifier (NPI) is 1912924895, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lynn A. Toaz, D.O. located?
The NPPES record lists a practice address at 550 E Washington St, Ionia, MI, 48846. Phone: (616) 527-8293. Providers update this record themselves, so call before visiting.
How can I verify Lynn A. Toaz, D.O.'s license?
NPPES lists Michigan license number LT011641, 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 Lynn A. Toaz, D.O. prescribe under Medicare Part D?
In 2024, Lynn A. Toaz, D.O. had 6,379 Medicare Part D claims for 469 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.