Dr. David J. Woltmann, DO
- Medicare services, 2024
- 351
- Medicare patients, 2024
- 184
- Part D claims, 2024
- 2,331
- Hospital affiliations
- 5
- Industry payments
- $2,245
- Practice address
- 500 Campus Drive, Hancock, MI 49930
- Practice phone
- Call (906) 483-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Woltmann's professional email, personal email and mobile number
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Dr. David J. Woltmann is a nephrologist in Hancock, Michigan
Dr. Woltmann practices at UP Health System - Portage in Hancock, Michigan, part of Lifepoint Health.
Dr. Woltmann's NPI, 1548283567, was assigned on July 25, 2006. Dr. Woltmann graduated from Michigan State University College of Osteopathic Medicine in 1993. Dr. Woltmann holds Michigan license DW 012033.
- NPI
- 1548283567NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274427935
- NPI enumeration date
- July 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (906) 483-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David J. Woltmann practices at UP Health System - Portage in Hancock, Michigan
Dr. Woltmann's primary practice is UP Health System - Portage, at 500 Campus Drive, Hancock, MI 49930 in Houghton County. The practice phone is (906) 483-1000.
- UP Health System - Portage500 Campus Drive, Hancock, MI 49930 · Houghton CountyPhone(906) 483-1000
Source: Dmand AI Affiliation Data
Dr. David J. Woltmann is affiliated with 8 sites of care and 5 medical groups
Dr. Woltmann's primary practice is UP Health System - Portage in Hancock, Michigan, part of Lifepoint Health. Dr. Woltmann is also affiliated with University of Michigan Health-Sparrow Lansing. The medical group on file is UP Health System, Portage. Dmand AI also links Dr. Woltmann to 3 more hospitals, 4 medical groups, 2 group practices and clinics and 1 dialysis center, 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. David J. Woltmann's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Woltmann practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UP Health System - Portage | Available with a free account |
| +7 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David J. Woltmann is one of 310 nephrologists in Michigan
Nephrology is Dr. Woltmann's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Woltmann is licensed in Michigan.
Specialties and state licenses
- Nephrology, MichiganPrimary
Nephrologists near Dr. Woltmann
Counts of nephrologists 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. David J. Woltmann billed Medicare for 351 services in 2024
CMS data shows 351 Medicare services from Dr. Woltmann across 3 procedure codes in 2024, for 184 Medicare patients. Medicare paid $38,969 for them.
Dr. Woltmann's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4702024: 27941%
- Tests and treatments
- 2023: 2512024: 7271%
Where Dr. Woltmann's Medicare services took place, 2024
- In an office17550%
- In a facility17650%
Dr. Woltmann compared with the Michigan median for nephrologists, 2024
- Dr. Woltmann
- Michigan median
- Medicare services
- 351vs 84959% below
- Medicare patients
- 184vs 26932% below
- Part D claims
- 1,888vs 5743.3 times
Medians across 310 nephrologists in Michigan with Dmand AI profiles that report each measure.
Dr. Woltmann'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. Woltmann and other nephrologists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David J. Woltmann treated 184 Medicare patients in 2024, average age 73
CMS counts 184 Medicare patients who saw Dr. Woltmann in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 19% are also on Medicaid. Their average risk score is 2.31, 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. Woltmann's median patient age at 74, with 49% women.
Dr. Woltmann's Medicare patients by age, 2024
Dr. Woltmann's Medicare patients by sex, 2024
- Women9652%
- Men8848%
Chronic conditions among Dr. Woltmann's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes53%
- Ischemic heart disease42%
- Heart failure31%
- Mood disorders29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Woltmann'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
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David J. Woltmann wrote 2,331 Medicare Part D claims in 2024
In 2024, Dr. Woltmann wrote 2,331 Medicare Part D claims for 257 patients. 89% of them were for generic drugs. CMS names the drug for 1,888 of them, across 66 drugs with 11 or more claims each, at $251,509 in total drug cost. In 2023, CMS named 1,606 claims across 58 drugs.
Dr. Woltmann's Part D claims by kind of drug, 2024
- Generic2,075 claims89%
- Brand-name241 claims10%
- Other15 claims1%
Dr. Woltmann'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. Woltmann's Part D claims, 2024
- Opioids2%55 of 2,331 claims
- Antibiotics3%64 of 2,331 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: 1,6062024: 1,88818%
Drugs named by CMS: 66 in 2024, 58 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. David J. Woltmann offers telehealth to Medicare patients
Dr. Woltmann accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Woltmann as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David J. Woltmann received $2,245 in industry payments from 2016 to 2025
CMS Open Payments shows 112 general payments to Dr. Woltmann from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 87% of the total. Amgen Inc. paid the most, $350.
General payments to Dr. Woltmann by program year, 2016 to 2025
General payments to Dr. Woltmann by kind, 2016 to 2025
- Food and beverage$1,96487%
- Education$28113%
Companies that paid Dr. Woltmann the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David J. Woltmann graduated from Michigan State University College of Osteopathic Medicine
Dr. Woltmann graduated from Michigan State University College of Osteopathic Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David J. Woltmann'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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. David J. Woltmann
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. David J. Woltmann's NPI number?
Dr. David J. Woltmann's NPI number is 1548283567. It was assigned on July 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David J. Woltmann?
Dr. David J. Woltmann is a nephrologist in Hancock, Michigan. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. David J. Woltmann practice?
Dr. Woltmann practices at 500 Campus Drive, Hancock, MI 49930. Dr. Woltmann's primary practice is UP Health System - Portage in Hancock, Michigan, part of Lifepoint Health. Dmand AI also links Dr. Woltmann to 3 hospitals, 4 medical groups, 2 group practices and clinics and 1 dialysis center.
What is Dr. David J. Woltmann's office phone number?
The practice phone on file for Dr. Woltmann is (906) 483-1000.
What is Dr. David J. Woltmann's medical license number?
Dr. Woltmann holds Michigan license DW 012033.
Which hospitals is Dr. David J. Woltmann affiliated with?
Dr. Woltmann practices at UP Health System - Portage in Hancock, Michigan. Dr. Woltmann is also affiliated with University of Michigan Health-Sparrow Lansing. Dmand AI links Dr. Woltmann to 3 more hospitals.
What medical group is Dr. David J. Woltmann part of?
Dr. Woltmann is linked to UP Health System, Portage. Dmand AI links Dr. Woltmann to 4 more medical groups.
Does Dr. David J. Woltmann accept Medicare?
Yes. CMS data shows Dr. Woltmann billed Medicare for 351 services in 2024, and Dr. Woltmann accepts Medicare assignment.
Does Dr. David J. Woltmann offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Woltmann as offering telehealth services.
How many Medicare patients does Dr. David J. Woltmann see?
CMS counts 184 Medicare patients who saw Dr. Woltmann in 2024, with an average age of 73.
Show 5 more questionsShow fewer questions
What services does Dr. David J. Woltmann bill to Medicare?
In 2024, Dr. Woltmann's most billed Medicare services were office visit, established patient (99214), dialysis (90960) and office visit, new patient (99205).
Where did Dr. David J. Woltmann go to medical school?
Dr. Woltmann graduated from Michigan State University College of Osteopathic Medicine in 1993.
What drugs does Dr. David J. Woltmann prescribe most?
In 2024 Medicare Part D data, Dr. Woltmann's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Calcitriol.
Has Dr. David J. Woltmann received payments from drug or device companies?
CMS Open Payments shows $2,245 in general payments to Dr. Woltmann from 30 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. David J. Woltmann been practicing?
Dr. Woltmann graduated from medical school in 1993, 33 years ago.
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