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Dr. Maxwell Leffler, DO
NPI1255893822
- Medicare services, 2024
- 455
- Medicare patients, 2024
- 325
- Part D claims, 2024
- 393
- Publications
- 1
- MIPS score, 2024
- 92
- Practice address
- 826 West King Street, Owosso, MI 48867
- Practice phone
- Call (989) 723-5211
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Leffler's professional email, personal email and mobile number
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Dr. Maxwell Leffler is an emergency medicine physician in Owosso, Michigan
Dr. Leffler practices at Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare.
Dr. Leffler's NPI, 1255893822, was assigned on April 3, 2019. Dr. Leffler graduated from Michigan State University College of Osteopathic Medicine in 2019. Dr. Leffler holds Michigan license 5101026751.
NPI and contact details
- NPI
- 1255893822NPI Registry (opens in a new tab)
- NPI enumeration date
- April 3, 2019
- NPI status
- Active
- Practice phone
- (989) 723-5211
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Maxwell Leffler practices at Memorial Healthcare in Owosso, Michigan
Dr. Leffler's primary practice is Memorial Healthcare, at 826 West King Street, Owosso, MI 48867 in Shiawassee County. The practice phone is (989) 723-5211.
- Memorial Healthcare826 West King Street, Owosso, MI 48867 · Shiawassee CountyPhone(989) 723-5211
Source: Dmand AI Affiliation Data
Dr. Maxwell Leffler is affiliated with 2 sites of care and 6 medical groups
Dr. Leffler's primary practice is Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare. Dr. Leffler is also affiliated with ProMedica Charles and Virginia Hickman Hospital. The medical group on file is Emergency Care Specialists (ECS). Dmand AI also links Dr. Leffler to 5 more medical groups, each named with a free account.
ProMedica Charles and Virginia Hickman HospitalEmergency Care Specialists (ECS)5 medical groupsNames with a free account
See all 8 affiliations for Dr. LefflerSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maxwell Leffler's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Leffler practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Healthcare | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maxwell Leffler is one of 2,045 emergency medicine physicians in Michigan
Emergency medicine is Dr. Leffler's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Leffler is licensed in Michigan.
Specialties and state licenses
- Emergency medicine, MichiganPrimary
Emergency medicine physicians near Dr. Leffler
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
2,045emergency medicine physicians in Michigan11emergency medicine physicians in Owosso9emergency medicine physicians at Memorial Healthcare
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Maxwell Leffler billed Medicare for 455 services in 2024
CMS data shows 455 Medicare services from Dr. Leffler across 4 procedure codes in 2024, for 325 Medicare patients. Medicare paid $43,389 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024455
Medicare patients325
Paid by Medicare$43,389
Procedure codes4
Dr. Leffler's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4662024: 34326%
- Tests and treatments
- 2023: 402024: 112180%
Dr. Leffler compared with the Michigan median for emergency medicine physicians, 2024
- Dr. Leffler
- Michigan median
- Medicare services
- 455vs 23494% above
- Medicare patients
- 325vs 21452% above
- Part D claims
- 294vs 466.4 times
Medians across 1,937 emergency medicine physicians in Michigan with Dmand AI profiles that report each measure.
Dr. Leffler'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.
Need commercial claims for Dr. Leffler?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Leffler and other emergency medicine physicians in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maxwell Leffler treated 325 Medicare patients in 2024, average age 74
CMS counts 325 Medicare patients who saw Dr. Leffler in 2024. The largest group is 75 to 84, with 107 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.22, 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. Leffler's median patient age at 66, with 53% women.
Medicare patients, 2024325
Average age74
Average risk score2.22
Also on Medicaid30%
Dr. Leffler's Medicare patients by age, 2024
Dr. Leffler's Medicare patients by sex, 2024
- Women19761%
- Men12839%
Chronic conditions among Dr. Leffler's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Mood disorders48%
- Depression44%
- Anxiety42%
- Heart failure42%
- Chronic kidney disease41%
Share of Medicare patients with each condition. A patient can have several.
Dr. Leffler's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maxwell Leffler wrote 393 Medicare Part D claims in 2024
In 2024, Dr. Leffler wrote 393 Medicare Part D claims for 247 patients. 94% of them were for generic drugs. CMS names the drug for 294 of them, across 10 drugs with 11 or more claims each, at $1,624 in total drug cost. In 2023, CMS named 268 claims across 9 drugs.
Part D claims, 2024393
Drugs named by CMS10
Total drug cost$1,624
Part D patients247
Dr. Leffler's Part D claims by kind of drug, 2024
- Generic368 claims94%
- Brand-name and other25 claims6%
Dr. Leffler'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. Leffler's Part D claims, 2024
- Opioids12%47 of 393 claims
- Antibiotics37%146 of 393 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: 2682024: 29410%
Drugs named by CMS: 10 in 2024, 9 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. Maxwell Leffler scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Leffler for performance year 2024, reported as part of a group.
Dr. Leffler's MIPS scores, performance year 2024
- 92of 100Final score
- 81.9of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Maxwell Leffler has 1 publication on record
Dmand AI links 1 paper to Dr. Leffler in 2017. Dr. Leffler's most frequent co-author is Evan Michael Springer, DO.
Papers1
Dr. Leffler's most frequent co-authors
Recent publications by Dr. Leffler
See who Dr. Leffler researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Leffler works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Maxwell Leffler received $14 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Leffler from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $14.
Companies that paid Dr. Leffler the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Maxwell Leffler graduated from Michigan State University College of Osteopathic Medicine
Dr. Leffler graduated from Michigan State University College of Osteopathic Medicine in 2019.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Maxwell Leffler'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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Maxwell Leffler
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. Maxwell Leffler's NPI number?
Dr. Maxwell Leffler's NPI number is 1255893822. It was assigned on April 3, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Maxwell Leffler?
Dr. Maxwell Leffler is an emergency medicine physician in Owosso, Michigan. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Maxwell Leffler practice?
Dr. Leffler practices at 826 West King Street, Owosso, MI 48867. Dr. Leffler's primary practice is Memorial Healthcare in Owosso, Michigan, part of Memorial Healthcare. Dmand AI also links Dr. Leffler to 5 medical groups.
What is Dr. Maxwell Leffler's office phone number?
The practice phone on file for Dr. Leffler is (989) 723-5211.
What is Dr. Maxwell Leffler's medical license number?
Dr. Leffler holds Michigan license 5101026751.
Which hospitals is Dr. Maxwell Leffler affiliated with?
Dr. Leffler practices at Memorial Healthcare in Owosso, Michigan. Dr. Leffler is also affiliated with ProMedica Charles and Virginia Hickman Hospital.
What medical group is Dr. Maxwell Leffler part of?
Dr. Leffler is linked to Emergency Care Specialists (ECS). Dmand AI links Dr. Leffler to 5 more medical groups.
Does Dr. Maxwell Leffler accept Medicare?
Yes. CMS data shows Dr. Leffler billed Medicare for 455 services in 2024.
What is Dr. Maxwell Leffler's MIPS score?
Dr. Leffler's MIPS final score for performance year 2024 is 92 out of 100, reported as part of a group.
How many Medicare patients does Dr. Maxwell Leffler see?
CMS counts 325 Medicare patients who saw Dr. Leffler in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
What services does Dr. Maxwell Leffler bill to Medicare?
In 2024, Dr. Leffler's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. Maxwell Leffler go to medical school?
Dr. Leffler graduated from Michigan State University College of Osteopathic Medicine in 2019.
What drugs does Dr. Maxwell Leffler prescribe most?
In 2024 Medicare Part D data, Dr. Leffler's most prescribed drugs by claims were Ondansetron ODT, Hydrocodone-Acetaminophen and Cephalexin.
Has Dr. Maxwell Leffler received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Leffler from 1 company from 2023 to 2023. The largest total came from CSL Behring.
How long has Dr. Maxwell Leffler been practicing?
Dr. Leffler graduated from medical school in 2019, 7 years ago.
Does Dr. Maxwell Leffler do research?
Dmand AI links 1 publication to Dr. Leffler.
Who does Dr. Maxwell Leffler publish with?
Dr. Leffler's most frequent co-authors are Evan Michael Springer, DO (1 shared paper).
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