Dr. Chad Michael Gerrish , DO
Internal Medicine • Lansing, MI
1540 Lake Lansing Rd, Suite 102
Lansing, MI 489123756
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. Chad Gerrish is listed in NPPES under Internal Medicine.
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NPI assigned on April 11, 2010; this date does not establish years in practice.
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Published CMS data list 258 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: 231 service units.
- 99213 — Established patient outpatient office visit: 27 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 the full table · Guide: How to read Medicare Part B data
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Published CMS data list 7,296 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:
- Atorvastatin Calcium — 385 prescription fills, including refills.
- Amlodipine Besylate — 341 prescription fills, including refills.
- Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) — 300 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 149 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 65% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: 414. Middle half: 229 to 695.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: 502. Middle half: 235 to 939.
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 437 in 2020 to 258 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
1540 Lake Lansing Rd
Suite 102
Lansing, MI 489123756
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 2 distinct group names: Mclaren Greater Lansing; Powerback Rehabilitation Llc. 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
2010
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
128 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 $22,805 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 $14,520 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
16,743 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
$672,124 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 2024
All general payments: $78.17 across 4 records.
By nature of payment
- Food and Beverage: $78.17 across 4 records.
Reporting-company totals (3 largest of 4)
- Novo Nordisk Inc: $23.11 across 1 record.
- Novartis Pharmaceuticals Corporation: $21.50 across 1 record.
- Boehringer Ingelheim Pharmaceuticals, Inc.: $17.59 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 2024 (published June 30, 2026).
Years since graduation
16 years (graduated 2010)
CMS Doctors and Clinicians data list 2010 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
2010
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. Gerrish 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. Gerrish 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 65% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: 414. Middle half: 229 to 695.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: 502. Middle half: 235 to 939.
Medicare-allowed amount
A lower Medicare-allowed amount than 65% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: $45,487. Middle half: $21,484 to $65,984.
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $45,163. Middle half: $22,487 to $79,883.
Paid by Medicare
A lower Medicare payment amount than 80% of clinicians listed under Internal Medicine in Lansing, MI (2024, 61 clinicians with data). Median for this group: $31,698. Middle half: $15,234 to $51,428.
A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine in Michigan (2024, 3,244 clinicians with data). Median for this group: $34,631. Middle half: $16,935 to $61,333.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Lansing, MI (2024, 94 clinicians with data). Median for this group: 148. Middle half: 83 to 2,213.
More Part D prescriptions than 80% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: 801. Middle half: 94 to 5,032.
Part D drug cost
A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Lansing, MI (2024, 94 clinicians with data). Median for this group: $13,988. Middle half: $1,477 to $261,021.
A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Michigan (2024, 3,463 clinicians with data). Median for this group: $66,958. Middle half: $1,946 to $462,816.
135 active clinicians are listed under Internal Medicine with a practice address in Lansing, MI (5,741 in Michigan).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Lansing
9.6% of these 135 clinicians have the CMS telehealth indicator.
51.1% of these 135 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 B services
Medicare Part B services decreased 41% from 437 in 2020 to 258 in 2024.
- 2020: 437
- 2021: 397
- 2022: 348
- 2023: 346
- 2024: 258
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Medicare-allowed amount
Medicare-allowed amount decreased 22% from $29,108 in 2020 to $22,805 in 2024.
- 2020: $29,108
- 2021: $39,667
- 2022: $34,151
- 2023: $33,240
- 2024: $22,805
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Paid by Medicare
Paid by Medicare decreased 21% from $18,417 in 2020 to $14,520 in 2024.
- 2020: $18,417
- 2021: $26,720
- 2022: $21,867
- 2023: $21,301
- 2024: $14,520
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Medicare Part D prescriptions
Medicare Part D prescriptions stayed about the same: 6,769 in 2020 and 7,296 in 2024.
- 2020: 6,769
- 2021: 6,506
- 2022: 6,469
- 2023: 7,390
- 2024: 7,296
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30-day fills
30-day fills increased 13% from 14,761 in 2020 to 16,743 in 2024.
- 2020: 14,761
- 2021: 14,553
- 2022: 14,471
- 2023: 16,804
- 2024: 16,743
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Part D drug cost
Part D drug cost increased 16% from $578,029 in 2020 to $672,124 in 2024.
- 2020: $578,029
- 2021: $554,866
- 2022: $582,509
- 2023: $679,000
- 2024: $672,124
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $69.36 in 2020 to $78.17 in 2024.
- 2020: $69.36
- 2021: $14.14
- 2022: $250.81
- 2023: $98.84
- 2024: $78.17
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), 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 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $78.17.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $23.11 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
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LEQVIO | General | $21.50 |
| Boehringer Ingelheim Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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JARDIANCE | General | $17.59 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $15.97 |
Source: CMS Open Payments, program year 2024, 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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231 | 114 | $137.54 | $91.51 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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27 | 25 | $98.70 | $61.72 |
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 385 | 32,256 | $5,298.56 | 117 |
| Amlodipine Besylate | Amlodipine Besylate | 341 | 28,976 | $2,822.58 | 101 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 300 | 8,151 | $4,559.51 | 59 |
| Omeprazole | Omeprazole | 285 | 23,631 | $4,084.41 | 85 |
| Losartan Potassium | Losartan Potassium | 267 | 22,130 | $4,246.21 | 82 |
| Levothyroxine Sodium | Levothyroxine Sodium | 250 | 20,605 | $5,192.92 | 67 |
| Lisinopril | Lisinopril | 244 | 21,103 | $2,249.98 | 73 |
| Metformin Hcl | Metformin Hcl | 214 | 18,246 | $2,776.01 | 59 |
| Gabapentin | Gabapentin | 192 | 8,899 | $2,446.63 | 39 |
| Metoprolol Succinate | Metoprolol Succinate | 159 | 12,795 | $3,156.40 | 51 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 151 | 13,020 | $2,722.36 | 44 |
| Alprazolam | Alprazolam | 141 | 4,858 | $509.68 | 35 |
| Tramadol Hcl | Tramadol Hcl | 134 | 4,256 | $867.92 | 23 |
| Simvastatin | Simvastatin | 124 | 10,324 | $1,414.65 | 35 |
| Tamsulosin Hcl | Tamsulosin Hcl | 113 | 9,222 | $1,931.11 | 38 |
| Hydrochlorothiazide | Hydrochlorothiazide | 100 | 7,695 | $612.32 | 26 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 95 | 2,766 | $1,613.34 | 13 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 91 | 4,530 | $969.34 | 25 |
| Carvedilol | Carvedilol | 88 | 7,567 | $1,640.54 | 29 |
| Allopurinol | Allopurinol | 87 | 7,334 | $1,192.25 | 25 |
| Pantoprazole Sodium | Pantoprazole Sodium | 80 | 7,030 | $2,161.66 | 30 |
| Eliquis | Apixaban | 73 | 4,229 | $77,134.49 | 22 |
| Lorazepam | Lorazepam | 71 | 2,675 | $551.85 | 18 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 71 | 4,042 | $3,836.70 | 35 |
| Xarelto | Rivaroxaban | 69 | 4,120 | $72,158.35 | 15 |
(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: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - INTERNAL MEDICINE
I20131101001051
MI
9335374198
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
Powerback Rehabilitation Llc
5025 Ann Arbor Rd, Jackson, MI 492018801
Phone: 5178791505
Mclaren Greater Lansing
12805 Escanaba Dr, Dewitt, MI 488208628
Phone: 5179759750
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
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Osteopathic Medicine (D.O.)
Physical Medicine & Rehabilitation
Doctor of Medicine (M.D.)
Nurse Practitioner - Adult Health
Registered Nurse, Master of Science in Nursing
Nurse Practitioner - Family
Family Nurse Practitioner
Career & Practice History
NPI enumerated April 11, 2010.
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 Providers in Lansing
- Dr. Christopher Alvarado, DO
- Dr. Ravina Dhami, MD
- Dr. Caroline Heideman, DO
- Dr. Michael Ahrens, MD
- Dr. Erik Hemingway, MD
- Dr. Jason Law, MD, MS
More public profiles in Michigan
Directory navigation, in NPI number order.
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- Maureen Mead, MD Family Medicine · Alpena
- Percy Key, CSW Social Worker - Clinical · Southfield
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- Jerry Hill, CRNA Nurse Anesthetist, Certified Registered · Laurium
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- Lara Freeburger, MD Obstetrics & Gynecology · Grand Rapids
- Padmaja Mouli, MD Internal Medicine · Adrian
- Darshika Shah, DDS Dentist · Troy
- Peter Ugolini, MD Orthopaedic Surgery · Grand Rapids
- Allison Bannick, NP Nurse Practitioner - Pediatrics · Grand Rapids
Mailing Address
1540 Lake Lansing Rd, Suite 102
Lansing, MI 489123756
Phone: 5179133810