Dr. Joel William Knaack, DO
- Medicare services, 2024
- 612
- Medicare patients, 2024
- 218
- Part D claims, 2024
- 219
- Hospital affiliations
- 3
- Industry payments
- $205
- Practice address
- 1105 Sixth Street, Traverse City, MI 49684
- Practice phone
- Call (231) 935-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Knaack's professional email, personal email and mobile number
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Dr. Joel William Knaack is an internist in Traverse City, Michigan
Dr. Knaack practices at Munson Medical Center in Traverse City, Michigan, part of Munson Healthcare.
Dr. Knaack's NPI, 1841236460, was assigned on June 21, 2006. Dr. Knaack holds Michigan license 5101016880.
- NPI
- 1841236460NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587790381
- NPI enumeration date
- June 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (231) 935-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joel William Knaack practices at Munson Medical Center in Traverse City, Michigan
Dr. Knaack's primary practice is Munson Medical Center, at 1105 Sixth Street, Traverse City, MI 49684 in Grand Traverse County. The practice phone is (231) 935-5000.
- Munson Medical Center1105 Sixth Street, Traverse City, MI 49684 · Grand Traverse CountyPhone(231) 935-5000
Source: Dmand AI Affiliation Data
Dr. Joel William Knaack is affiliated with 3 sites of care and 5 medical groups
Dr. Knaack's primary practice is Munson Medical Center in Traverse City, Michigan, part of Munson Healthcare. Dr. Knaack is also affiliated with Munson Healthcare Otsego Memorial Hospital. The medical group on file is Sound Physicians. Dmand AI also links Dr. Knaack to 1 more hospital and 4 medical groups, 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. Joel William Knaack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knaack practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Munson Medical Center | Available with a free account |
| +2 more sites and 4 medical groups | 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 Munson Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joel William Knaack is one of 4,804 internists in Michigan
Internal medicine is Dr. Knaack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Knaack is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Knaack
Counts of internists 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. Joel William Knaack billed Medicare for 612 services in 2024
CMS data shows 612 Medicare services from Dr. Knaack across 6 procedure codes in 2024, for 218 Medicare patients. Medicare paid $52,256 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Knaack's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6922024: 61212%
Dr. Knaack compared with the Michigan median for internists, 2024
- Dr. Knaack
- Michigan median
- Medicare services
- 612vs 42345% above
- Medicare patients
- 218vs 15937% above
- Part D claims
- 36vs 31489% below
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Knaack's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knaack and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joel William Knaack treated 218 Medicare patients in 2024, average age 76
CMS counts 218 Medicare patients who saw Dr. Knaack in 2024. The largest group is 75 to 84, with 79 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 2.11, 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. Knaack's median patient age at 74, with 47% women.
Dr. Knaack's Medicare patients by age, 2024
Dr. Knaack's Medicare patients by sex, 2024
- Women10649%
- Men11251%
Chronic conditions among Dr. Knaack's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Heart failure50%
- Ischemic heart disease50%
- Diabetes45%
- Chronic kidney disease44%
- Atrial fibrillation41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knaack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joel William Knaack wrote 219 Medicare Part D claims in 2024
In 2024, Dr. Knaack wrote 219 Medicare Part D claims for 126 patients. 89% of them were for generic drugs. CMS names the drug for 36 of them, across 2 drugs with 11 or more claims each, at $259 in total drug cost. In 2023, CMS named 91 claims across 7 drugs.
Dr. Knaack's Part D claims by kind of drug, 2024
- Generic195 claims89%
- Brand-name and other24 claims11%
Dr. Knaack's 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. Knaack's Part D claims, 2024
- Opioids7%16 of 219 claims
- Antibiotics11%23 of 219 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: 912024: 3660%
Drugs named by CMS: 2 in 2024, 7 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
How Dr. Joel William Knaack takes part in Medicare
Dr. Knaack accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Joel William Knaack received $205 in industry payments from 2016 to 2018
CMS Open Payments shows 12 general payments to Dr. Knaack from 6 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $77.
General payments to Dr. Knaack by program year, 2016 to 2018
Companies that paid Dr. Knaack the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Joel William Knaack'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. Joel William Knaack
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. Joel William Knaack's NPI number?
Dr. Joel William Knaack's NPI number is 1841236460. It was assigned on June 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joel William Knaack?
Dr. Joel William Knaack is an internist in Traverse City, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Joel William Knaack practice?
Dr. Knaack practices at 1105 Sixth Street, Traverse City, MI 49684. Dr. Knaack's primary practice is Munson Medical Center in Traverse City, Michigan, part of Munson Healthcare. Dmand AI also links Dr. Knaack to 1 hospital and 4 medical groups.
What is Dr. Joel William Knaack's office phone number?
The practice phone on file for Dr. Knaack is (231) 935-5000.
What is Dr. Joel William Knaack's medical license number?
Dr. Knaack holds Michigan license 5101016880.
Which hospitals is Dr. Joel William Knaack affiliated with?
Dr. Knaack practices at Munson Medical Center in Traverse City, Michigan. Dr. Knaack is also affiliated with Munson Healthcare Otsego Memorial Hospital. Dmand AI links Dr. Knaack to 1 more hospital.
What medical group is Dr. Joel William Knaack part of?
Dr. Knaack is linked to Sound Physicians. Dmand AI links Dr. Knaack to 4 more medical groups.
Does Dr. Joel William Knaack accept Medicare?
Yes. CMS data shows Dr. Knaack billed Medicare for 612 services in 2024, and Dr. Knaack accepts Medicare assignment.
How many Medicare patients does Dr. Joel William Knaack see?
CMS counts 218 Medicare patients who saw Dr. Knaack in 2024, with an average age of 76.
What services does Dr. Joel William Knaack bill to Medicare?
In 2024, Dr. Knaack's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
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What drugs does Dr. Joel William Knaack prescribe most?
In 2024 Medicare Part D data, Dr. Knaack's most prescribed drugs by claims were Pantoprazole Sodium and Prednisone.
Has Dr. Joel William Knaack received payments from drug or device companies?
CMS Open Payments shows $205 in general payments to Dr. Knaack from 6 companies from 2016 to 2018. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Joel William Knaack been practicing?
Dr. Knaack graduated from medical school in 2006, 20 years ago.
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