Dr. Zachary Thomas Walker , MD
Surgery β’ Lansing, MI
1215 E Michigan Ave
Lansing, MI 489121896
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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NPI assigned on April 1, 2024; this date does not establish years in practice.
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Published CMS data list 29 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Oxycodone Hcl β 16 prescription fills, including refills.
- Ondansetron Odt (Ondansetron) β 13 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table Β· Guide: How to read Medicare Part D prescriber data
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Close to the middle for Part D prescriptions among clinicians listed under Surgery in Lansing, MI (2024, 23 clinicians with data). Median for this group: 29. Middle half: 17 to 71.
Fewer Part D prescriptions than 65% of clinicians listed under Surgery in Michigan (2024, 639 clinicians with data). Median for this group: 47. Middle half: 22 to 106.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
Practice Location & Contact Primary Location
1215 E Michigan Ave
Lansing, MI 489121896
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
29 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
$270 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $237.42 across 3 records.
By nature of payment
- Food and Beverage: $237.42 across 3 records.
Reporting-company totals
- Medtronic, Inc.: $138.55 across 1 record.
- Medical Device Business Services, Inc.: $81.19 across 1 record.
- Stryker Corporation: $17.68 across 1 record.
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).
NPI first issued
2024
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Lansing and Michigan
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Surgery in Lansing, MI (2024, 23 clinicians with data). Median for this group: 29. Middle half: 17 to 71.
Fewer Part D prescriptions than 65% of clinicians listed under Surgery in Michigan (2024, 639 clinicians with data). Median for this group: 47. Middle half: 22 to 106.
Part D drug cost
Close to the middle for clinicians listed under Surgery in Lansing, MI (2024, 23 clinicians with data). Median for this group: $261. Middle half: $37 to $1,458.
Close to the middle for clinicians listed under Surgery in Michigan (2024, 639 clinicians with data). Median for this group: $224. Middle half: $58 to $1,388.
47 active clinicians are listed under Surgery with a practice address in Lansing, MI (1,378 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lansing
4.3% of these 47 clinicians have the CMS telehealth indicator.
46.8% of these 47 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
CMS data for Part D prescriptions are available for 2024 only.
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30-day fills
CMS data for 30-day fills are available for 2024 only.
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Part D drug cost
CMS data for Part D drug cost are available for 2024 only.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $68.05 in 2024 to $237.42 in 2025.
- 2024: $68.05
- 2025: $237.42
Sources: 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 Β· 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 β December 31, 2025): fewer than 11 records totaling $237.42.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
|
TRANSORB | General | $138.55 |
| Medical Device Business Services, Inc. |
Food and Beverage
In-kind items and services
|
EVARREST | General | $81.19 |
| Stryker Corporation |
Food and Beverage
In-kind items and services
|
MAKO | General | $17.68 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Oxycodone Hcl | Oxycodone Hcl | 16 | 37 | $31.60 | 16 |
| Ondansetron Odt | Ondansetron | 13 | 67 | $238.39 | 13 |
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
Self-certified to NPPES: 2024-04-04NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Nurse Practitioner
Anesthesiology
Doctor of Medicine (M.D.)
Internal Medicine
Physician Assistant
Physician Assistant (Certified)
Physician Assistant
Physician Assistant
Emergency Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1215 E MICHIGAN AVE, LANSING, MI 489121896 (Tel: 5173645902)
Surgery (license number reported to NPPES: MI 4351053721)
NPI status registered as active in NPPES database
Registered at 1215 E MICHIGAN AVE, LANSING, MI 489121896 (Tel: 5173641000)
Registered at 717 E 250 N, WASHINGTON, IN 475017631 (Tel: 8122599849)
Recorded as ZACHARY WALKER, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Lansing
- Dr. Jeffrey Deppen, DO
- Dr. Ivy Godana, DO
- Dr. Ozanan Meireles, MD
- Jonathan Levy
- Dr. Suzanne Hanses, DO
- Dr. Nicole Clarke, MD
Mailing Address
1215 E Michigan Ave
Lansing, MI 489121896
Phone: 5173645902