Dr. David J Woltmann , DO
Internal Medicine - Nephrology • Lansing, MI
405 W Greenlawn, Suite 230
Lansing, MI 48910
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. David Woltmann is listed in NPPES under Internal Medicine - Nephrology.
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NPI assigned on July 25, 2006; this date does not establish years in practice.
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Published CMS data list 351 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 148 service units.
- 99214 — Established patient outpatient office visit: 87 service units.
- 90960 — Dialysis services, 4 or more physician visits per month (20 years or older): 72 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 1,888 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Losartan Potassium — 113 prescription fills, including refills.
- Amlodipine Besylate — 86 prescription fills, including refills.
- Calcitriol — 81 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 66 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 269 clinicians with data). Median for this group: 1,027. Middle half: 464 to 1,839.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,469 in 2020 to 351 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
405 W Greenlawn
Suite 230
Lansing, MI 48910
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 3 distinct group names: Aspirus Keweenaw; Ingham Nephrology And Hypertension Pc; Portage Physician Practices Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Michigan State University College Of Osteopathic Medicine
1993
What Public CMS Data Show
Internal Medicine - Nephrology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
184 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $55,350 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $38,970 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
4,091 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$251,509 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $366.01 across 16 records.
By nature of payment
- Food and Beverage: $350.79 across 15 records.
- Education: $15.22 across 1 record.
Reporting-company totals (3 largest of 8)
- Calliditas Therapeutics US Inc.: $92.78 across 3 records.
- Amgen Inc.: $71.68 across 3 records.
- Otsuka America Pharmaceutical, Inc.: $54.07 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
33 years (graduated 1993)
CMS Doctors and Clinicians data list 1993 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
What this does not show: Telehealth (some services)
It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Woltmann has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Woltmann as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Lansing and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 80% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 269 clinicians with data). Median for this group: 1,027. Middle half: 464 to 1,839.
Too few clinicians listed under Internal Medicine - Nephrology in Lansing have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 269 clinicians with data). Median for this group: $132,750. Middle half: $52,672 to $203,815.
Too few clinicians listed under Internal Medicine - Nephrology in Lansing have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 269 clinicians with data). Median for this group: $103,770. Middle half: $40,261 to $159,249.
Too few clinicians listed under Internal Medicine - Nephrology in Lansing have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 80% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 282 clinicians with data). Median for this group: 793. Middle half: 339 to 1,456.
Too few clinicians listed under Internal Medicine - Nephrology in Lansing have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 75% of clinicians listed under Internal Medicine - Nephrology in Michigan (2024, 282 clinicians with data). Median for this group: $95,824. Middle half: $34,792 to $239,878.
Too few clinicians listed under Internal Medicine - Nephrology in Lansing have Medicare Part D data for 2024 to compare.
10 active clinicians are listed under Internal Medicine - Nephrology with a practice address in Lansing, MI (376 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 76% from 1,469 in 2020 to 351 in 2024.
- 2020: 1,469
- 2021: 1,198
- 2022: 997
- 2023: 721
- 2024: 351
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Medicare-allowed amount
Medicare-allowed amount decreased 78% from $257,387 in 2020 to $55,350 in 2024.
- 2020: $257,387
- 2021: $227,673
- 2022: $187,400
- 2023: $129,984
- 2024: $55,350
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Paid by Medicare
Paid by Medicare decreased 81% from $200,042 in 2020 to $38,970 in 2024.
- 2020: $200,042
- 2021: $177,736
- 2022: $147,357
- 2023: $99,975
- 2024: $38,970
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 19% from 2,324 in 2020 to 1,888 in 2024.
- 2020: 2,324
- 2021: 1,937
- 2022: 1,736
- 2023: 1,606
- 2024: 1,888
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30-day fills
30-day fills stayed about the same: 4,477 in 2020 and 4,091 in 2024.
- 2020: 4,477
- 2021: 4,104
- 2022: 3,932
- 2023: 3,768
- 2024: 4,091
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Part D drug cost
Part D drug cost increased 42% from $176,633 in 2020 to $251,509 in 2024.
- 2020: $176,633
- 2021: $118,347
- 2022: $103,573
- 2023: $137,748
- 2024: $251,509
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $137.76 in 2021 to $366.01 in 2025.
- 2021: $137.76
- 2022: $145.91
- 2023: $156.33
- 2024: $224.07
- 2025: $366.01
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 16 records totaling $366.01.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Calliditas Therapeutics US Inc. |
Food and Beverage
In-kind items and services
|
TARPEYO | General | $36.58 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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VOYXACT | General | $34.48 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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KRYSTEXXA | General | $32.34 |
| Calliditas Therapeutics US Inc. |
Food and Beverage
In-kind items and services
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TARPEYO | General | $29.49 |
| Calliditas Therapeutics US Inc. |
Food and Beverage
In-kind items and services
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TARPEYO | General | $26.71 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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Fabhalta | General | $25.27 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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KRYSTEXXA | General | $23.09 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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Fabhalta | General | $20.61 |
| Otsuka America Pharmaceutical, Inc. |
Food and Beverage
In-kind items and services
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JYNARQUE | General | $19.59 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $19.30 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $18.74 |
| Ardelyx, Inc. |
Food and Beverage
In-kind items and services
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IBSRELA | General | $16.76 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $16.72 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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REPATHA | General | $16.25 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Education
In-kind items and services
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GATTEX | General | $15.22 |
| Bayer Healthcare Pharmaceuticals Inc. |
Food and Beverage
In-kind items and services
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Kerendia | General | $14.86 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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148 | 73 | $161.86 | $99.91 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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87 | 58 | $225.19 | $93.04 |
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90960
Dialysis services, 4 or more physician visits per month (20 years or older)
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72 | 13 | $704.58 | $331.07 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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27 | 27 | $260.00 | $210.28 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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17 | 17 | $432.53 | $173.79 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Losartan Potassium | Losartan Potassium | 113 | 8,126 | $1,477.44 | 33 |
| Amlodipine Besylate | Amlodipine Besylate | 86 | 6,103 | $420.98 | 31 |
| Calcitriol | Calcitriol | 81 | 6,035 | $1,207.53 | 24 |
| Potassium Chloride | Potassium Chloride | 71 | 4,542 | $2,818.04 | 17 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 64 | 5,470 | $709.53 | 19 |
| Torsemide | Torsemide | 60 | 3,540 | $1,074.00 | 22 |
| Metoprolol Succinate | Metoprolol Succinate | 57 | 4,294 | $908.29 | 20 |
| Bumetanide | Bumetanide | 56 | 3,240 | $2,117.20 | 19 |
| Spironolactone | Spironolactone | 55 | 4,090 | $577.00 | 17 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 55 | 4,387 | $1,496.92 | 14 |
| Atorvastatin Calcium | Atorvastatin Calcium | 52 | 3,800 | $1,049.26 | 15 |
| Potassium Citrate Er | Potassium Citrate | 44 | 3,366 | $8,177.02 | 11 |
| Furosemide | Furosemide | 42 | 2,936 | $292.04 | 13 |
| Farxiga | Dapagliflozin Propanediol | 39 | 1,749 | $32,664.56 | 12 |
| Doxazosin Mesylate | Doxazosin Mesylate | 38 | 2,447 | $1,001.68 | 11 |
| Levothyroxine Sodium | Levothyroxine Sodium | 36 | 3,180 | $442.52 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 34 | 1,943 | $320.12 | 13 |
| Sodium Polystyrene Sulfonate | Sodium Polystyrene Sulfonate | 33 | 1,046 | $1,218.32 | — |
| Clonidine Hcl | Clonidine Hcl | 32 | 1,920 | $541.43 | — |
| Tamsulosin Hcl | Tamsulosin Hcl | 31 | 1,970 | $644.48 | — |
| Lisinopril | Lisinopril | 28 | 2,160 | $494.28 | — |
| Tramadol Hcl | Tramadol Hcl | 28 | 755 | $93.61 | — |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 28 | 1,297 | $2,698.07 | — |
| Trazodone Hcl | Trazodone Hcl | 28 | 1,364 | $164.14 | — |
| Omeprazole | Omeprazole | 26 | 2,076 | $332.42 | — |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207RN0300X
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NEPHROLOGY
I20050511000415
MI
3274427935
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Ingham Nephrology And Hypertension Pc
3960 Patient Care Dr, Lansing, MI 489114276
Phone: 5174858217430
Portage Physician Practices Inc
500 Campus Dr, Hancock, MI 499301452
Phone: 9064831060
Aspirus Keweenaw
205 Osceola St, Laurium, MI 499132134
Phone: 9063373100
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Nephrology
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine - Nephrology
Doctor of Osteopathic Medicine (D.O.)
Internal Medicine - Nephrology
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Nurse Practitioner
Nurse Practitioner (Certified)
Internal Medicine - Nephrology
Career & Practice History
NPI enumerated July 25, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Internal Medicine - Nephrology Specialists in Lansing
- Dr. Brian Cousino, DO
- Dr. Carla Dudash-Mion, DO
- Amanda Thelen
- Dr. Nader Kassis Akl, MD
- Dr. Anne Marie Pop, DO
- Dr. Gabriel Elia, MD
Mailing Address
405 W Greenlawn, Suite 230
Lansing, MI 48910
Phone: 5174858217