Dr. Joseph W. Warren, MD
- Medicare services, 2024
- 5,206
- Medicare patients, 2024
- 373
- Part D claims, 2024
- 4,880
- Hospital affiliations
- 3
- Industry payments
- $6,866
- Practice address
- 807 S Orlando Ave, Winter Park, FL 32789
- Practice phone
- Call (689) 223-5334
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Casselberry Dialysis
Winter Park, Florida
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. Joseph W. Warren is a nephrologist in Winter Park, Florida
Dr. Warren practices at Casselberry Dialysis in Winter Park, Florida.
Dr. Warren's NPI, 1952394058, was assigned on August 24, 2005. Dr. Warren graduated from West Virginia University School Of Medicine in 1970. Dr. Warren holds Florida license ME0030906.
- NPI
- 1952394058NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294785101
- NPI enumeration date
- August 24, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (689) 223-5334
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 82
- Medical school graduation
- 1970
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joseph W. Warren practices at Casselberry Dialysis in Winter Park, Florida
Dr. Warren's primary practice is Casselberry Dialysis, at 807 S Orlando Ave, Winter Park, FL 32789 in Orange County. The practice phone is (689) 223-5334.
- Casselberry Dialysis807 S Orlando Ave, Winter Park, FL 32789 · Orange CountyPhone(689) 223-5334
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joseph W. Warren is affiliated with 11 sites of care and 1 medical group
Dr. Warren's primary practice is Casselberry Dialysis in Winter Park, Florida. Dr. Warren is also affiliated with AdventHealth Orlando. The medical group on file is Nephrology Associates of Central Florida. Dmand AI also links Dr. Warren to 2 more hospitals, 5 dialysis centers, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joseph W. Warren's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Warren practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Casselberry Dialysis | Available with a free account |
| +10 more affiliated sites | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joseph W. Warren is one of 917 nephrologists in Florida
Nephrology is Dr. Warren's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Warren is board certified in internal medicine by the American Board of Internal Medicine. Dr. Warren is licensed in Florida.
Specialties and state licenses
- Nephrology, FloridaPrimary
Clinical focus
Dmand AI lists chronic kidney disease, fluid and electrolyte imbalances and kidney disease among the conditions Dr. Warren treats.
Nephrologists near Dr. Warren
Counts of nephrologists 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. Joseph W. Warren billed Medicare for 5,206 services in 2024
CMS data shows 5,206 Medicare services from Dr. Warren across 30 procedure codes in 2024, for 373 Medicare patients. Medicare paid $194,526 for them.
Dr. Warren's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3,7842024: 3,5536%
- Office and hospital visits
- 2023: 6542024: 651No change
- Tests and treatments
- 2023: 6042024: 42230%
- Other services
- 2023: 1,0482024: 30871%
- Surgery
- 2023: 3222024: 27216%
- Drugs given in the office
- 2023: 13,2002024: 0100%
Where Dr. Warren's Medicare services took place, 2024
- In an office5,195100%
- In a facility110%
Dr. Warren compared with the Florida median for nephrologists, 2024
- Dr. Warren
- Florida median
- Medicare services
- 5,206vs 1,4903.5 times
- Medicare patients
- 373vs 387Close to median
- Part D claims
- 4,314vs 9344.6 times
Medians across 882 nephrologists in Florida with Dmand AI profiles that report each measure.
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.
Need commercial claims for Dr. Warren?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Warren and other nephrologists in Florida.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joseph W. Warren treated 373 Medicare patients in 2024, average age 71
CMS counts 373 Medicare patients who saw Dr. Warren in 2024. The largest group is 75 to 84, with 135 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 14% are also on Medicaid. Their average risk score is 3.64, 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 68, with 47% women.
Dr. Warren's Medicare patients by age, 2024
Dr. Warren's Medicare patients by sex, 2024
- Women17948%
- Men19452%
Chronic conditions among Dr. Warren's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes50%
- Ischemic heart disease48%
- Arthritis43%
- Heart failure34%
- Anxiety30%
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 68
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joseph W. Warren wrote 4,880 Medicare Part D claims in 2024
In 2024, Dr. Warren wrote 4,880 Medicare Part D claims for 397 patients. 87% of them were for generic drugs. CMS names the drug for 4,314 of them, across 99 drugs with 11 or more claims each, at $377,196 in total drug cost. In 2023, CMS named 4,090 claims across 99 drugs.
Dr. Warren's Part D claims by kind of drug, 2024
- Generic4,240 claims87%
- Brand-name and other640 claims13%
Dr. Warren'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. Warren's Part D claims, 2024
- Opioids4%207 of 4,880 claims
- Antibiotics6%290 of 4,880 claims
- Antipsychotics, patients 65 and over0%12 of 4,880 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: 4,0902024: 4,3145%
Drugs named by CMS: 99 in 2024, 99 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
How Dr. Joseph W. 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Joseph W. Warren received $6,866 in industry payments from 2016 to 2025
CMS Open Payments shows 310 general payments to Dr. Warren from 53 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $1,158.
General payments to Dr. Warren by program year, 2016 to 2025
General payments to Dr. Warren by kind, 2016 to 2025
- Food and beverage$6,50795%
- Education$3605%
Companies that paid Dr. Warren the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joseph W. Warren has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Warren, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Warren
- 2013
- CMS Stage 1 EHR
- 2012
- Checkbook Top Doc
Source: Dmand AI Professional Profile Data
Dr. Joseph W. Warren graduated from West Virginia University School Of Medicine
Dr. Warren graduated from West Virginia University School Of Medicine in 1970.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Joseph W. Warren accepts plans from 17 insurance carriers
Dr. Warren is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Cigna
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Massachusetts
- +9 more carriersWith a free account
Plan types Dr. Warren accepts, by number of carriers
- PPO11
- Medicare10
- HMO9
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Joseph W. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Joseph W. 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. Joseph W. Warren's NPI number?
Dr. Joseph W. Warren's NPI number is 1952394058. It was assigned on August 24, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Joseph W. Warren?
Dr. Joseph W. Warren is a nephrologist in Winter Park, Florida. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Joseph W. Warren practice?
Dr. Warren practices at 807 S Orlando Ave, Winter Park, FL 32789. Dr. Warren's primary practice is Casselberry Dialysis in Winter Park, Florida. Dmand AI also links Dr. Warren to 2 hospitals, 5 dialysis centers, 1 group practice or clinic and 1 home health agency.
What is Dr. Joseph W. Warren's office phone number?
The practice phone on file for Dr. Warren is (689) 223-5334.
What is Dr. Joseph W. Warren's medical license number?
Dr. Warren holds Florida license ME0030906.
Which hospitals is Dr. Joseph W. Warren affiliated with?
Dr. Warren is affiliated with AdventHealth Orlando. Dmand AI links Dr. Warren to 2 more hospitals.
What medical group is Dr. Joseph W. Warren part of?
Dr. Warren is linked to Nephrology Associates of Central Florida.
Does Dr. Joseph W. Warren accept Medicare?
Yes. CMS data shows Dr. Warren billed Medicare for 5,206 services in 2024, and Dr. Warren accepts Medicare assignment.
How many Medicare patients does Dr. Joseph W. Warren see?
CMS counts 373 Medicare patients who saw Dr. Warren in 2024, with an average age of 71.
Is Dr. Joseph W. Warren board certified?
Yes. Dr. Warren is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Joseph W. Warren bill to Medicare?
In 2024, Dr. Warren's most billed Medicare services were office visit, established patient (99214), lab and pathology test (81003) and medicare service (G2211).
Where did Dr. Joseph W. Warren go to medical school?
Dr. Warren graduated from West Virginia University School Of Medicine in 1970.
What drugs does Dr. Joseph W. Warren prescribe most?
In 2024 Medicare Part D data, Dr. Warren's most prescribed drugs by claims were Amlodipine Besylate, Furosemide and Prednisone.
Has Dr. Joseph W. Warren received payments from drug or device companies?
CMS Open Payments shows $6,866 in general payments to Dr. Warren from 53 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Joseph W. Warren been practicing?
Dr. Warren graduated from medical school in 1970, 56 years ago.
What insurance does Dr. Joseph W. Warren accept?
Dr. Warren is in network with 17 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 11. Check the plan with the practice before a visit.
Selling to nephrology practices?
See nephrologists in Florida by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card