Dr. Jeffrey S. Warren, MD
- Medicare services, 2024
- 2,285
- Medicare patients, 2024
- 947
- Hospital affiliations
- 2
- Industry payments
- $23
- Medical group
- 1
- Practice address
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Practice phone
- Call (734) 936-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Hospital
School-Based Health Center · Ann Arbor, Michigan
Find Dr. Warren's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jeffrey S. Warren is an immunopathology physician in Ann Arbor, Michigan
Dr. Warren practices at University Hospital in Ann Arbor, Michigan.
Dr. Warren's NPI, 1912089897, was assigned on October 19, 2006. Dr. Warren graduated from Ohio State University College of Medicine in 1980. Dr. Warren holds Michigan license 4301051563.
- NPI
- 1912089897NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345384590
- NPI enumeration date
- October 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (734) 936-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey S. Warren practices at University Hospital in Ann Arbor, Michigan
Dr. Warren's primary practice is University Hospital, at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The practice phone is (734) 936-4000.
- University Hospital1500 E Medical Center Dr, Ann Arbor, MI 48109Phone(734) 936-4000
Source: Dmand AI Affiliation Data
Dr. Jeffrey S. Warren is affiliated with 3 sites of care and 1 medical group
Dr. Warren's primary practice is University Hospital in Ann Arbor, Michigan. Dr. Warren is also affiliated with University Hospital. The medical group on file is University of Michigan Health. Dmand AI also links Dr. Warren to 1 more hospital, named with a free account. Dr. Warren's employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeffrey S. Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warren practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jeffrey S. Warren is one of 2 immunopathology physicians in Michigan
Immunopathology is Dr. Warren's primary specialty in the NPI Registry, under taxonomy code 207ZI0100X. Dr. Warren is licensed in Michigan.
Specialties and state licenses
- Immunopathology, MichiganPrimary
Immunopathology physicians near Dr. Warren
Counts of immunopathology physicians 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. Jeffrey S. Warren billed Medicare for 2,285 services in 2024
CMS data shows 2,285 Medicare services from Dr. Warren across 6 procedure codes in 2024, for 947 Medicare patients. Medicare paid $30,165 for them.
Dr. Warren's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,9242024: 2,28522%
Where Dr. Warren's Medicare services took place, 2024
- In an office1,96186%
- In a facility32414%
Dr. Warren'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. Warren and other immunopathology physicians in Michigan.
Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Jeffrey S. Warren treated 947 Medicare patients in 2024, average age 72
CMS counts 947 Medicare patients who saw Dr. Warren in 2024. The largest group is 65 to 74, with 438 patients. 71% of them have high blood pressure, and 62% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.98, 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. Warren's median patient age at 67, with 57% women.
Dr. Warren's Medicare patients by age, 2024
Dr. Warren's Medicare patients by sex, 2024
- Women53356%
- Men41444%
Chronic conditions among Dr. Warren's Medicare patients, 2024
- High blood pressure71%
- High cholesterol62%
- Arthritis47%
- Chronic kidney disease36%
- Diabetes31%
- Ischemic heart disease30%
- Anxiety27%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Warren's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Jeffrey S. Warren takes part in Medicare
Dr. Warren accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Jeffrey S. Warren received $23 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Warren from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $23.
Companies that paid Dr. Warren the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeffrey S. Warren graduated from Ohio State University College of Medicine
Dr. Warren graduated from Ohio State University College of Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey S. Warren'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) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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. Jeffrey S. Warren
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. Jeffrey S. Warren's NPI number?
Dr. Jeffrey S. Warren's NPI number is 1912089897. It was assigned on October 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey S. Warren?
Dr. Jeffrey S. Warren is an immunopathology physician in Ann Arbor, Michigan. The primary specialty in the NPI Registry is Immunopathology Physician (taxonomy code 207ZI0100X).
Where does Dr. Jeffrey S. Warren practice?
Dr. Warren practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. Dr. Warren's primary practice is University Hospital in Ann Arbor, Michigan. Dmand AI also links Dr. Warren to 1 hospital.
What is Dr. Jeffrey S. Warren's office phone number?
The practice phone on file for Dr. Warren is (734) 936-4000.
What is Dr. Jeffrey S. Warren's medical license number?
Dr. Warren holds Michigan license 4301051563.
Which hospitals is Dr. Jeffrey S. Warren affiliated with?
Dr. Warren is affiliated with University Hospital. Dmand AI links Dr. Warren to 1 more hospital.
What medical group is Dr. Jeffrey S. Warren part of?
Dr. Warren is linked to University of Michigan Health.
Does Dr. Jeffrey S. Warren accept Medicare?
Yes. CMS data shows Dr. Warren billed Medicare for 2,285 services in 2024, and Dr. Warren accepts Medicare assignment.
How many Medicare patients does Dr. Jeffrey S. Warren see?
CMS counts 947 Medicare patients who saw Dr. Warren in 2024, with an average age of 72.
What services does Dr. Jeffrey S. Warren bill to Medicare?
In 2024, Dr. Warren's most billed Medicare services were lab and pathology test (84165), lab and pathology test (86334) and lab and pathology test (84166).
Show 3 more questionsShow fewer questions
Where did Dr. Jeffrey S. Warren go to medical school?
Dr. Warren graduated from Ohio State University College of Medicine in 1980.
Has Dr. Jeffrey S. Warren received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Warren from 1 company from 2021 to 2021. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Jeffrey S. Warren been practicing?
Dr. Warren graduated from medical school in 1980, 46 years ago.
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