Dr. John Samuel Fleming, DO
- Medicare services, 2024
- 327
- Medicare patients, 2024
- 124
- Part D claims, 2024
- 3,034
- Hospital affiliations
- 5
- Industry payments
- $8,562
- Practice address
- 100 Michigan St NE, Grand Rapids, MI 49503
- Practice phone
- Call (616) 391-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Fleming's professional email, personal email and mobile number
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Dr. John Samuel Fleming is a rheumatologist in Grand Rapids, Michigan
Dr. Fleming practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health.
Dr. Fleming's NPI, 1295145803, was assigned on May 5, 2014. Dr. Fleming graduated from Michigan State University College of Human Medicine in 2014. Dr. Fleming holds Michigan license 5101024591.
- NPI
- 1295145803NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113143355
- NPI enumeration date
- May 5, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (616) 391-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Samuel Fleming practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan
Dr. Fleming's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth, at 100 Michigan St NE, Grand Rapids, MI 49503 in Kent County. The practice phone is (616) 391-1774.
- Corewell Health Grand Rapids Hospitals - Butterworth100 Michigan St NE, Grand Rapids, MI 49503 · Kent CountyPhone(616) 391-1774
Source: Dmand AI Affiliation Data
Dr. John Samuel Fleming is affiliated with 7 sites of care and 2 medical groups
Dr. Fleming's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dr. Fleming is also affiliated with Corewell Health Greenville Hospital. The medical group on file is Corewell Health Medical Group West. Dmand AI also links Dr. Fleming to 3 more hospitals, 2 group practices and clinics and 1 medical group, 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. John Samuel Fleming's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fleming practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Corewell Health Grand Rapids Hospitals - Butterworth | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Samuel Fleming is one of 203 rheumatologists in Michigan
Rheumatology is Dr. Fleming's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Fleming is licensed in Michigan.
Specialties and state licenses
- Rheumatology, MichiganPrimary
Rheumatologists near Dr. Fleming
Counts of rheumatologists 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. John Samuel Fleming billed Medicare for 327 services in 2024
CMS data shows 327 Medicare services from Dr. Fleming across 3 procedure codes in 2024, for 124 Medicare patients. Medicare paid $15,974 for them. Every service was in an office.
Dr. Fleming's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2032024: 203No change
- Other services
- 2023: 02024: 124
Dr. Fleming compared with the Michigan median for rheumatologists, 2024
- Dr. Fleming
- Michigan median
- Medicare services
- 327vs 40018% below
- Medicare patients
- 124vs 16223% below
- Part D claims
- 2,874vs 1,1992.4 times
Medians across 198 rheumatologists in Michigan with Dmand AI profiles that report each measure.
Dr. Fleming'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Samuel Fleming treated 124 Medicare patients in 2024, average age 68
CMS counts 124 Medicare patients who saw Dr. Fleming in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have arthritis, and 64% have high blood pressure. 22% are also on Medicaid. Their average risk score is 1.70, 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. Fleming's median patient age at 62, with 70% women.
Dr. Fleming's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Fleming's Medicare patients by sex, 2024
- Women7460%
- Men5040%
Chronic conditions among Dr. Fleming's Medicare patients, 2024
- Arthritis75%
- High blood pressure64%
- High cholesterol63%
- Mood disorders37%
- Depression34%
- Anxiety32%
- Ischemic heart disease24%
- COPD22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fleming's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women70%
- Men30%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Samuel Fleming wrote 3,034 Medicare Part D claims in 2024
In 2024, Dr. Fleming wrote 3,034 Medicare Part D claims for 438 patients. 81% of them were for generic drugs. CMS names the drug for 2,874 of them, across 28 drugs with 11 or more claims each, at $2,255,351 in total drug cost. In 2023, CMS named 2,722 claims across 29 drugs.
Dr. Fleming's Part D claims by kind of drug, 2024
- Generic2,465 claims81%
- Brand-name557 claims18%
- Other12 claims0%
Dr. Fleming'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,7222024: 2,8746%
Drugs named by CMS: 28 in 2024, 29 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. John Samuel Fleming offers telehealth to Medicare patients
Dr. Fleming accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fleming as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Samuel Fleming received $8,562 in industry payments from 2018 to 2025
CMS Open Payments shows 567 general payments to Dr. Fleming from 21 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 99% of the total. Abbvie Inc. paid the most, $2,607.
General payments to Dr. Fleming by program year, 2018 to 2025
General payments to Dr. Fleming by kind, 2018 to 2025
- Food and beverage$8,50799%
- Education$551%
Companies that paid Dr. Fleming the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Samuel Fleming graduated from Michigan State University College of Human Medicine
Dr. Fleming graduated from Michigan State University College of Human Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Samuel Fleming'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. John Samuel Fleming
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. John Samuel Fleming's NPI number?
Dr. John Samuel Fleming's NPI number is 1295145803. It was assigned on May 5, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. John Samuel Fleming?
Dr. John Samuel Fleming is a rheumatologist in Grand Rapids, Michigan. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. John Samuel Fleming practice?
Dr. Fleming practices at 100 Michigan St NE, Grand Rapids, MI 49503. Dr. Fleming's primary practice is Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan, part of Corewell Health. Dmand AI also links Dr. Fleming to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. John Samuel Fleming's office phone number?
The practice phone on file for Dr. Fleming is (616) 391-1774.
What is Dr. John Samuel Fleming's medical license number?
Dr. Fleming holds Michigan license 5101024591.
Which hospitals is Dr. John Samuel Fleming affiliated with?
Dr. Fleming practices at Corewell Health Grand Rapids Hospitals - Butterworth in Grand Rapids, Michigan. Dr. Fleming is also affiliated with Corewell Health Greenville Hospital. Dmand AI links Dr. Fleming to 3 more hospitals.
What medical group is Dr. John Samuel Fleming part of?
Dr. Fleming is linked to Corewell Health Medical Group West. Dmand AI links Dr. Fleming to 1 more medical group.
Does Dr. John Samuel Fleming accept Medicare?
Yes. CMS data shows Dr. Fleming billed Medicare for 327 services in 2024, and Dr. Fleming accepts Medicare assignment.
Does Dr. John Samuel Fleming offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Fleming as offering telehealth services.
How many Medicare patients does Dr. John Samuel Fleming see?
CMS counts 124 Medicare patients who saw Dr. Fleming in 2024, with an average age of 68.
Show 5 more questionsShow fewer questions
What services does Dr. John Samuel Fleming bill to Medicare?
In 2024, Dr. Fleming's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, new patient (99204).
Where did Dr. John Samuel Fleming go to medical school?
Dr. Fleming graduated from Michigan State University College of Human Medicine in 2014.
What drugs does Dr. John Samuel Fleming prescribe most?
In 2024 Medicare Part D data, Dr. Fleming's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Prednisone and Methotrexate.
Has Dr. John Samuel Fleming received payments from drug or device companies?
CMS Open Payments shows $8,562 in general payments to Dr. Fleming from 21 companies from 2018 to 2025. The largest total came from Abbvie Inc.
How long has Dr. John Samuel Fleming been practicing?
Dr. Fleming graduated from medical school in 2014, 12 years ago.
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