Dr. Darol D. Joseff, MD
- Medicare services, 2024
- 2,066
- Medicare patients, 2024
- 470
- Part D claims, 2024
- 2,292
- MIPS score, 2024
- 75
- Hospital affiliations
- 4
- Practice address
- 1704 State St, Santa Barbara, CA 93101
- Practice phone
- Call (805) 682-9942
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Santa Barbara Artificial Kidney Center
Dialysis Center - Independent · Santa Barbara, California
Find Dr. Joseff'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. Darol D. Joseff is a nephrologist in Santa Barbara, California
Dr. Joseff practices at Santa Barbara Artificial Kidney Center in Santa Barbara, California.
Dr. Joseff's NPI, 1669554739, was assigned on October 19, 2006. Dr. Joseff graduated from University Of Cincinnati College Of Medicine in 1980. Dr. Joseff's California license number on file is G46420.
- NPI
- 1669554739NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294792065
- NPI enumeration date
- October 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (805) 682-9942
- 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. Darol D. Joseff practices at Santa Barbara Artificial Kidney Center in Santa Barbara, California
Dr. Joseff's primary practice is Santa Barbara Artificial Kidney Center, at 1704 State St, Santa Barbara, CA 93101 in Santa Barbara County. The practice phone is (805) 682-9942.
- Santa Barbara Artificial Kidney Center1704 State St, Santa Barbara, CA 93101 · Santa Barbara CountyPhone(805) 682-9942
Source: Dmand AI Affiliation Data
Dr. Darol D. Joseff is affiliated with 8 sites of care and 2 medical groups
Dr. Joseff's primary practice is Santa Barbara Artificial Kidney Center in Santa Barbara, California. Dr. Joseff is also affiliated with Santa Barbara Cottage Hospital. The medical group on file is Physicians' Medical Group. Dmand AI also links Dr. Joseff to 3 more hospitals, 2 home health agencies, 1 group practice or clinic 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. Darol D. Joseff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Joseff practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Barbara Artificial Kidney Center | Available with a free account |
| +7 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Darol D. Joseff is one of 1,401 nephrologists in California
Nephrology is Dr. Joseff's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Joseff is board certified in internal medicine by the American Board of Internal Medicine. Dr. Joseff has a license on file in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, fluid and electrolyte imbalances and kidney cysts among the conditions Dr. Joseff treats.
Nephrologists near Dr. Joseff
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. Darol D. Joseff billed Medicare for 2,066 services in 2024
CMS data shows 2,066 Medicare services from Dr. Joseff across 12 procedure codes in 2024, for 470 Medicare patients. Medicare paid $256,552 for them.
Dr. Joseff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8582024: 1,68010%
- Tests and treatments
- 2023: 4112024: 35613%
- Other services
- 2023: 02024: 30
Where Dr. Joseff's Medicare services took place, 2024
- In an office1,20258%
- In a facility86442%
Dr. Joseff compared with the California median for nephrologists, 2024
- Dr. Joseff
- California median
- Medicare services
- 2,066vs 1,08491% above
- Medicare patients
- 470vs 30753% above
- Part D claims
- 1,882vs 95597% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Joseff'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. Joseff and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Darol D. Joseff treated 470 Medicare patients in 2024, average age 77
CMS counts 470 Medicare patients who saw Dr. Joseff in 2024. The largest group is 75 to 84, with 205 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 23% are also on Medicaid. Their average risk score is 3.17, 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. Joseff's median patient age at 73, with 38% women.
Dr. Joseff's Medicare patients by age, 2024
Dr. Joseff's Medicare patients by sex, 2024
- Women20844%
- Men26256%
Chronic conditions among Dr. Joseff's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes43%
- Ischemic heart disease42%
- Heart failure38%
- Atrial fibrillation32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Joseff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women38%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Darol D. Joseff wrote 2,292 Medicare Part D claims in 2024
In 2024, Dr. Joseff wrote 2,292 Medicare Part D claims for 238 patients. 76% of them were for generic drugs. CMS names the drug for 1,882 of them, across 48 drugs with 11 or more claims each, at $355,959 in total drug cost. In 2023, CMS named 2,042 claims across 58 drugs.
Dr. Joseff's Part D claims by kind of drug, 2024
- Generic1,746 claims76%
- Brand-name513 claims22%
- Other33 claims1%
Dr. Joseff'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. Joseff's Part D claims, 2024
- Opioids1%27 of 2,292 claims
- Antibiotics1%28 of 2,292 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: 2,0422024: 1,8828%
Drugs named by CMS: 48 in 2024, 58 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. Darol D. Joseff scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Joseff for performance year 2024, reported as part of a group. Dr. Joseff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Joseff as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Darol D. Joseff received $38,507 in industry payments from 2016 to 2025
CMS Open Payments shows 300 general payments to Dr. Joseff from 30 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 66% of the total. Bayer HealthCare Pharmaceuticals Inc. paid the most, $30,868.
General payments to Dr. Joseff by program year, 2016 to 2025
General payments to Dr. Joseff by kind, 2016 to 2025
- Speaker and faculty fees$25,58366%
- Food and beverage$9,09624%
- Travel and lodging$3,6579%
- Education$1710%
Companies that paid Dr. Joseff 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. Darol D. Joseff graduated from University Of Cincinnati College Of Medicine
Dr. Joseff graduated from University Of Cincinnati College Of Medicine in 1980. Dr. Joseff is a member of ACP.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Darol D. Joseff accepts plans from 7 insurance carriers
Dr. Joseff is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Humana
Plan types Dr. Joseff accepts, by number of carriers
- Medicare6
- PPO5
- HMO3
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Darol D. Joseff'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)Clinician Public Reporting: Overall MIPS Performance (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 |
| 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. Darol D. Joseff
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. Darol D. Joseff's NPI number?
Dr. Darol D. Joseff's NPI number is 1669554739. It was assigned on October 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Darol D. Joseff?
Dr. Darol D. Joseff is a nephrologist in Santa Barbara, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Darol D. Joseff practice?
Dr. Joseff practices at 1704 State St, Santa Barbara, CA 93101. Dr. Joseff's primary practice is Santa Barbara Artificial Kidney Center in Santa Barbara, California. Dmand AI also links Dr. Joseff to 3 hospitals, 2 home health agencies, 1 group practice or clinic and 1 medical group.
What is Dr. Darol D. Joseff's office phone number?
The practice phone on file for Dr. Joseff is (805) 682-9942.
What is Dr. Darol D. Joseff's medical license number?
Dr. Joseff's California license number on file is G46420.
Which hospitals is Dr. Darol D. Joseff affiliated with?
Dr. Joseff is affiliated with Santa Barbara Cottage Hospital. Dmand AI links Dr. Joseff to 3 more hospitals.
What medical group is Dr. Darol D. Joseff part of?
Dr. Joseff is linked to Physicians' Medical Group. Dmand AI links Dr. Joseff to 1 more medical group.
Does Dr. Darol D. Joseff accept Medicare?
Yes. CMS data shows Dr. Joseff billed Medicare for 2,066 services in 2024, and Dr. Joseff accepts Medicare assignment.
Does Dr. Darol D. Joseff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Joseff as offering telehealth services.
What is Dr. Darol D. Joseff's MIPS score?
Dr. Joseff's MIPS final score for performance year 2024 is 75 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Darol D. Joseff see?
CMS counts 470 Medicare patients who saw Dr. Joseff in 2024, with an average age of 77.
Is Dr. Darol D. Joseff board certified?
Yes. Dr. Joseff is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Darol D. Joseff bill to Medicare?
In 2024, Dr. Joseff's most billed Medicare services were office visit, established patient (99215), hospital inpatient care (99233) and dialysis (90937).
Where did Dr. Darol D. Joseff go to medical school?
Dr. Joseff graduated from University Of Cincinnati College Of Medicine in 1980.
What drugs does Dr. Darol D. Joseff prescribe most?
In 2024 Medicare Part D data, Dr. Joseff's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Farxiga.
Has Dr. Darol D. Joseff received payments from drug or device companies?
CMS Open Payments shows $38,507 in general payments to Dr. Joseff from 30 companies from 2016 to 2025. The largest total came from Bayer HealthCare Pharmaceuticals Inc.
How long has Dr. Darol D. Joseff been practicing?
Dr. Joseff graduated from medical school in 1980, 46 years ago.
What insurance does Dr. Darol D. Joseff accept?
Dr. Joseff is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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