Janna Lynn Williams, MD
Infectious Disease Physician · Grand Rapids, MI
Janna Lynn Williams, MD is an infectious disease physician with a practice address in Grand Rapids, Michigan, and NPI 1033552740, issued on Apr 11, 2013. Check the license (Michigan 4301509242, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Janna Lynn Williams
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 4301509242 MI
Self-reported in NPPES; status is on the state search - Practice location
- 230 Michigan St NE Ste 230, Grand Rapids, MI 49503
- Phone
- (616) 774-2822
- Enumerated
- Apr 11, 2013
- Record last updated
- Sep 6, 2023
- Medicare enrollment
- Enrolled (PECOS I20230801001225); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 301 in Michigan → Look up another NPI →
Also registered at 230 Michigan St NE Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jordan Ashdown, PA-CPhysician Assistant1154832160
- Mudita Bhugra, MDInternal Medicine Physician1033347216
- Hannah Bray, MDInternal Medicine Physician1164001079
- Ann Chamberlain, NPGerontology Nurse Practitioner1851984330
- Zachary Ciochetto, M.D.Infectious Disease Physician1821520545
- Joshua Donkin, MDInfectious Disease Physician1669967964
Verify Janna Lynn Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301509242Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% fewer Medicare Part D claims than the average infectious disease physician in 2024
332 Medicare Part D claims for 82 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Amoxicillin33 claims
- Vancomycin Hcl33 claims
- Ceftriaxone30 claims
- Daptomycin23 claims
- Cefazolin Sodium21 claims
- Biktarvy19 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $37.24
2 payments; by number, the most common kind was food and beverage; the largest payer was La Jolla Pharmaceutical Company. The 3,895 providers of this specialty with any payment received $4,362.19 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.
Bills Medicare through one group practice
- Spectrum Health Primary Care PartnersGrand Rapids, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janna Lynn Williams among 301 infectious disease physician records in Michigan
Janna Lynn Williams, MD is one of 301 infectious disease physician records with a practice address in Michigan. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2013 · median 2002 among the 224 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Michigan
There are 301 infectious disease physician records in Michigan.
All 301 in Michigan → Every provider in Grand Rapids → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- David Baumgartner, MDGrand Rapids, MI 495031033144456
- Anamaria Bondici, MDGrand Rapids, MI 495031942524020
- Jorgelina De Sanctis, MDGrand Rapids, MI 495031396950226
- David Dobbie, M.D.Grand Rapids, MI 495031639116411
- Nnaemeka EgwuatuGrand Rapids, MI 495031588686695
- Mimi Emig, M.D.Grand Rapids, MI 495031205817863
- Christina Fahlsing, MDGrand Rapids, MI 495031730315474
- Minerva Galang, MDGrand Rapids, MI 495031467510933
Common questions
What is Janna Lynn Williams, MD's NPI number?
Janna Lynn Williams, MD's National Provider Identifier (NPI) is 1033552740, issued on Apr 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Janna Lynn Williams, MD located?
The NPPES record lists a practice address at 230 Michigan St NE Ste 230, Grand Rapids, MI, 49503. Phone: (616) 774-2822. Providers update this record themselves, so call before visiting.
How can I verify Janna Lynn Williams, MD's license?
NPPES lists Michigan license number 4301509242, 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 Janna Lynn Williams, MD prescribe under Medicare Part D?
In 2024, Janna Lynn Williams, MD had 332 Medicare Part D claims for 82 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Janna Lynn Williams, MD's MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.