Dr. Chad Michael Gerrish, DO
- Medicare services, 2024
- 258
- Medicare patients, 2024
- 128
- Part D claims, 2024
- 8,110
- Hospital affiliations
- 3
- Industry payments
- $1,725
- Practice address
- 2900 Collins Road, Lansing, MI 48910
- Practice phone
- Call (517) 975-5600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gerrish's professional email, personal email and mobile number
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Dr. Chad Michael Gerrish is an internist in Lansing, Michigan
Dr. Gerrish practices at McLaren Greater Lansing in Lansing, Michigan, part of McLaren Health Care.
Dr. Gerrish's NPI, 1063738458, was assigned on April 11, 2010. Dr. Gerrish graduated from Michigan State University College of Osteopathic Medicine in 2010. Dr. Gerrish holds Michigan license 5101018675.
- NPI
- 1063738458NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335374198
- NPI enumeration date
- April 11, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (517) 975-5600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chad Michael Gerrish practices at McLaren Greater Lansing in Lansing, Michigan
Dr. Gerrish's primary practice is McLaren Greater Lansing, at 2900 Collins Road, Lansing, MI 48910 in Ingham County. The practice phone is (517) 975-5600.
- McLaren Greater Lansing2900 Collins Road, Lansing, MI 48910 · Ingham CountyPhone(517) 975-5600
Source: Dmand AI Affiliation Data
Dr. Chad Michael Gerrish is affiliated with 7 sites of care and 2 medical groups
Dr. Gerrish's primary practice is McLaren Greater Lansing in Lansing, Michigan, part of McLaren Health Care. Dr. Gerrish is also affiliated with University of Michigan Health-Sparrow Lansing. The medical group on file is McLaren Greater Lansing. Dmand AI also links Dr. Gerrish to 1 more hospital, 2 group practices and clinics, 1 clinical lab, 1 home health agency and 1 medical group, each named with a free account. Dr. Gerrish's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chad Michael Gerrish's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gerrish practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLaren Greater Lansing | Available with a free account |
| +6 more sites and 1 medical group | 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 McLaren Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chad Michael Gerrish is one of 4,804 internists in Michigan
Internal medicine is Dr. Gerrish's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gerrish is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Internists near Dr. Gerrish
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. Chad Michael Gerrish billed Medicare for 258 services in 2024
CMS data shows 258 Medicare services from Dr. Gerrish across 2 procedure codes in 2024, all of them office visits, for 128 Medicare patients. Medicare paid $14,521 for them. Every service was in an office.
Dr. Gerrish's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3462024: 25825%
Dr. Gerrish compared with the Michigan median for internists, 2024
- Dr. Gerrish
- Michigan median
- Medicare services
- 258vs 42339% below
- Medicare patients
- 128vs 15919% below
- Part D claims
- 7,296vs 31423.2 times
Medians across 4,524 internists in Michigan with Dmand AI profiles that report each measure.
Dr. Gerrish'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. Gerrish and other internists in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chad Michael Gerrish treated 128 Medicare patients in 2024, average age 73
CMS counts 128 Medicare patients who saw Dr. Gerrish in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have high blood pressure, and 62% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gerrish's median patient age at 69, with 37% women.
Dr. Gerrish's Medicare patients by age, 2024
Dr. Gerrish's Medicare patients by sex, 2024
- Women4838%
- Men8063%
Chronic conditions among Dr. Gerrish's Medicare patients, 2024
- High blood pressure75%
- High cholesterol62%
- Arthritis47%
- Diabetes32%
- Chronic kidney disease27%
- Anxiety26%
- Ischemic heart disease26%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gerrish's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women37%
- Men63%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Chad Michael Gerrish wrote 8,110 Medicare Part D claims in 2024
In 2024, Dr. Gerrish wrote 8,110 Medicare Part D claims for 566 patients. 87% of them were for generic drugs. CMS names the drug for 7,296 of them, across 148 drugs with 11 or more claims each, at $672,124 in total drug cost. In 2023, CMS named 7,390 claims across 140 drugs.
Dr. Gerrish's Part D claims by kind of drug, 2024
- Generic7,077 claims87%
- Brand-name954 claims12%
- Other79 claims1%
Dr. Gerrish'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. Gerrish's Part D claims, 2024
- Opioids7%578 of 8,110 claims
- Antibiotics1%76 of 8,110 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: 7,3902024: 7,2961%
Drugs named by CMS: 148 in 2024, 140 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. Chad Michael Gerrish offers telehealth to Medicare patients
Dr. Gerrish accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gerrish as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chad Michael Gerrish received $1,725 in industry payments from 2016 to 2024
CMS Open Payments shows 110 general payments to Dr. Gerrish from 21 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. Novartis Pharmaceuticals Corporation paid the most, $390.
General payments to Dr. Gerrish by program year, 2016 to 2024
General payments to Dr. Gerrish by kind, 2016 to 2024
- Food and beverage$1,70299%
- Education$231%
Companies that paid Dr. Gerrish the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Chad Michael Gerrish graduated from Michigan State University College of Osteopathic Medicine
Dr. Gerrish graduated from Michigan State University College of Osteopathic Medicine in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Chad Michael Gerrish'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. Chad Michael Gerrish
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. Chad Michael Gerrish's NPI number?
Dr. Chad Michael Gerrish's NPI number is 1063738458. It was assigned on April 11, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Chad Michael Gerrish?
Dr. Chad Michael Gerrish is an internist in Lansing, Michigan. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Chad Michael Gerrish practice?
Dr. Gerrish practices at 2900 Collins Road, Lansing, MI 48910. Dr. Gerrish's primary practice is McLaren Greater Lansing in Lansing, Michigan, part of McLaren Health Care. Dmand AI also links Dr. Gerrish to 1 hospital, 2 group practices and clinics, 1 clinical lab, 1 home health agency and 1 medical group.
What is Dr. Chad Michael Gerrish's office phone number?
The practice phone on file for Dr. Gerrish is (517) 975-5600.
What is Dr. Chad Michael Gerrish's medical license number?
Dr. Gerrish holds Michigan license 5101018675.
Which hospitals is Dr. Chad Michael Gerrish affiliated with?
Dr. Gerrish practices at McLaren Greater Lansing in Lansing, Michigan. Dr. Gerrish is also affiliated with University of Michigan Health-Sparrow Lansing. Dmand AI links Dr. Gerrish to 1 more hospital.
What medical group is Dr. Chad Michael Gerrish part of?
Dr. Gerrish is linked to McLaren Greater Lansing. Dmand AI links Dr. Gerrish to 1 more medical group.
Does Dr. Chad Michael Gerrish accept Medicare?
Yes. CMS data shows Dr. Gerrish billed Medicare for 258 services in 2024, and Dr. Gerrish accepts Medicare assignment.
Does Dr. Chad Michael Gerrish offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Gerrish as offering telehealth services.
How many Medicare patients does Dr. Chad Michael Gerrish see?
CMS counts 128 Medicare patients who saw Dr. Gerrish in 2024, with an average age of 73.
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What services does Dr. Chad Michael Gerrish bill to Medicare?
In 2024, Dr. Gerrish's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Chad Michael Gerrish go to medical school?
Dr. Gerrish graduated from Michigan State University College of Osteopathic Medicine in 2010.
What drugs does Dr. Chad Michael Gerrish prescribe most?
In 2024 Medicare Part D data, Dr. Gerrish's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Hydrocodone-Acetaminophen.
Has Dr. Chad Michael Gerrish received payments from drug or device companies?
CMS Open Payments shows $1,725 in general payments to Dr. Gerrish from 21 companies from 2016 to 2024. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Chad Michael Gerrish been practicing?
Dr. Gerrish graduated from medical school in 2010, 16 years ago.
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