Dr. Janna Lynn Williams, MD
- Medicare services, 2024
- 352
- Medicare patients, 2024
- 164
- Part D claims, 2024
- 332
- Hospital affiliations
- 4
- Industry payments
- $1,853
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Williams' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Janna Lynn Williams is an infectious disease specialist in Grand Rapids, Michigan
Dr. Williams practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Williams' NPI, 1033552740, was assigned on April 11, 2013. Dr. Williams holds Michigan license 4301509242.
- NPI
- 1033552740NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709018062
- NPI enumeration date
- April 11, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Janna Lynn Williams practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. Williams' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Dr. Janna Lynn Williams is affiliated with 6 sites of care and 2 medical groups
Dr. Williams' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dr. Williams is also affiliated with Corewell Health Greenville Hospital. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Dr. Williams to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Janna Lynn Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Corewell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Janna Lynn Williams is one of 264 infectious disease specialists in Michigan
Infectious disease is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Williams is licensed in Michigan.
Specialties and state licenses
- Infectious disease, MichiganPrimary
Infectious disease specialists near Dr. Williams
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Janna Lynn Williams billed Medicare for 352 services in 2024
CMS data shows 352 Medicare services from Dr. Williams across 6 procedure codes in 2024, for 164 Medicare patients. Medicare paid $29,619 for them.
Dr. Williams' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2622024: 35234%
Where Dr. Williams' Medicare services took place, 2024
- In an office3510%
- In a facility31790%
Dr. Williams compared with the Michigan median for infectious disease specialists, 2024
- Dr. Williams
- Michigan median
- Medicare services
- 352vs 31811% above
- Medicare patients
- 164vs 14315% above
- Part D claims
- 214vs 13954% above
Medians across 266 infectious disease specialists in Michigan with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other infectious disease specialists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Janna Lynn Williams treated 164 Medicare patients in 2024, average age 71
CMS counts 164 Medicare patients who saw Dr. Williams in 2024. The largest group is 65 to 74, with 68 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.40, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 59, with 56% women.
Dr. Williams' Medicare patients by age, 2024
Dr. Williams' Medicare patients by sex, 2024
- Women6640%
- Men9860%
Chronic conditions among Dr. Williams' Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Arthritis60%
- Ischemic heart disease49%
- Chronic kidney disease46%
- Diabetes46%
- Mood disorders46%
- Heart failure43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Janna Lynn Williams wrote 332 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 332 Medicare Part D claims for 82 patients. 92% of them were for generic drugs. CMS names the drug for 214 of them, across 10 drugs with 11 or more claims each, at $107,266 in total drug cost. In 2023, CMS named 202 claims across 11 drugs.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic304 claims92%
- Brand-name28 claims8%
Dr. Williams' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Williams' Part D claims, 2024
- Antibiotics84%279 of 332 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2022024: 2146%
Drugs named by CMS: 10 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Janna Lynn Williams offers telehealth to Medicare patients
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williams as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Janna Lynn Williams received $1,853 in industry payments from 2021 to 2025
CMS Open Payments shows 7 general payments to Dr. Williams from 4 drug and device companies from 2021 to 2025. Consulting fees make up the largest share, 94% of the total. Abbvie Inc. paid the most, $1,800.
General payments to Dr. Williams by program year, 2021 to 2025
General payments to Dr. Williams by kind, 2021 to 2025
- Consulting fees$1,75094%
- Food and beverage$1036%
Companies that paid Dr. Williams the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Janna Lynn Williams's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Janna Lynn Williams
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Janna Lynn Williams' NPI number?
Dr. Janna Lynn Williams' NPI number is 1033552740. It was assigned on April 11, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Janna Lynn Williams?
Dr. Janna Lynn Williams is an infectious disease specialist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Janna Lynn Williams practice?
Dr. Williams practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Williams' primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Dr. Williams to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Janna Lynn Williams' office phone number?
The practice phone on file for Dr. Williams is (616) 391-1774.
What is Dr. Janna Lynn Williams' medical license number?
Dr. Williams holds Michigan license 4301509242.
Which hospitals is Dr. Janna Lynn Williams affiliated with?
Dr. Williams practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Dr. Williams is also affiliated with Corewell Health Greenville Hospital. Dmand AI links Dr. Williams to 2 more hospitals.
What medical group is Dr. Janna Lynn Williams part of?
Dr. Williams is linked to Corewell Health Medical Group West. Dmand AI links Dr. Williams to 1 more medical group.
Does Dr. Janna Lynn Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 352 services in 2024, and Dr. Williams accepts Medicare assignment.
Does Dr. Janna Lynn Williams offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williams as offering telehealth services.
How many Medicare patients does Dr. Janna Lynn Williams see?
CMS counts 164 Medicare patients who saw Dr. Williams in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Janna Lynn Williams bill to Medicare?
In 2024, Dr. Williams' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99233).
What drugs does Dr. Janna Lynn Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Amoxicillin, Vancomycin HCl and Ceftriaxone.
Has Dr. Janna Lynn Williams received payments from drug or device companies?
CMS Open Payments shows $1,853 in general payments to Dr. Williams from 4 companies from 2021 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Janna Lynn Williams been practicing?
Dr. Williams graduated from medical school in 2013, 13 years ago.
Selling to infectious disease practices?
See infectious disease specialists in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card