Cardiovascular DiseasesRenal InsufficiencyRenal Replacement Therapy
Dr. Bijan Roshan, MD
NPI1043280407PAC ID5496729741
- Medicare services, 2024
- 4,259
- Medicare patients, 2024
- 541
- Part D claims, 2024
- 1,683
- Publications
- 7
- Hospital affiliations
- 4
- Practice address
- 2135 Montiel Road Bldg B, San Marcos, CA 92069
- Practice phone
- Call (760) 975-0170
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
DaVita San Marcos Dialysis Center
Dialysis Center - Independent · San Marcos, California
Find Dr. Roshan'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. Bijan Roshan is a nephrologist in San Marcos, California
Dr. Roshan practices at DaVita San Marcos Dialysis Center in San Marcos, California.
Dr. Roshan's NPI, 1043280407, was assigned on January 26, 2006. Dr. Roshan graduated from Shahid Beheshti University of Medical Sciences in 1989. Dr. Roshan's Colorado license number on file is 51352.
NPI and contact details
- NPI
- 1043280407NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496729741
- NPI enumeration date
- January 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (760) 975-0170
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Bijan Roshan practices at DaVita San Marcos Dialysis Center in San Marcos, California
Dr. Roshan's primary practice is DaVita San Marcos Dialysis Center, at 2135 Montiel Road Bldg B, San Marcos, CA 92069 in San Diego County. The practice phone is (760) 975-0170.
- DaVita San Marcos Dialysis Center2135 Montiel Road Bldg B, San Marcos, CA 92069 · San Diego CountyPhone(760) 975-0170
Source: Dmand AI Affiliation Data
Dr. Bijan Roshan is affiliated with 7 sites of care and 1 medical group
Dr. Roshan's primary practice is DaVita San Marcos Dialysis Center in San Marcos, California. Dr. Roshan is also affiliated with Scripps Memorial Hospital La Jolla. The medical group on file is Scripps Clinic Medical Group. Dmand AI also links Dr. Roshan to 3 more hospitals and 2 dialysis centers, each named with a free account.
DaVita San Marcos Dialysis CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Bijan Roshan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Roshan practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| DaVita San Marcos Dialysis Center | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Bijan Roshan is one of 1,401 nephrologists in California
Nephrology is Dr. Roshan's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Roshan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Roshan's licenses on file in 6 states: Colorado, Montana, California, Texas, Massachusetts and Wisconsin.
Specialties and state licenses
- Nephrology, ColoradoPrimary
- Internal medicine, Montana
- California license
- Texas license
- Massachusetts license
- Wisconsin license
Clinical focus
Dmand AI lists acute kidney failure, chronic anemia, chronic kidney disease, fluid and electrolyte imbalances, gout, hypercalcemia, kidney cysts and kidney disease among the conditions Dr. Roshan treats.
Nephrologists near Dr. Roshan
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
1,401nephrologists in California
7nephrologists in San Marcos
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Bijan Roshan billed Medicare for 4,259 services in 2024
CMS data shows 4,259 Medicare services from Dr. Roshan across 14 procedure codes in 2024, for 541 Medicare patients. Medicare paid $184,636 for them.
Medicare services, 20244,259
Medicare patients541
Paid by Medicare$184,636
Procedure codes14
Dr. Roshan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 2,5002024: 2,4303%
- Office and hospital visits
- 2023: 1,2342024: 1,3419%
- Tests and treatments
- 2023: 5192024: 42718%
- Other services
- 2023: 722024: 4735%
- Lab and pathology
- 2023: 202024: 1430%
Where Dr. Roshan's Medicare services took place, 2024
- In an office3,52583%
- In a facility73417%
Dr. Roshan compared with the California median for nephrologists, 2024
- Dr. Roshan
- California median
- Medicare services
- 4,259vs 1,0843.9 times
- Medicare patients
- 541vs 30776% above
- Part D claims
- 1,382vs 95545% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Roshan'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. Roshan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Roshan and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Bijan Roshan treated 541 Medicare patients in 2024, average age 78
CMS counts 541 Medicare patients who saw Dr. Roshan in 2024. The largest group is 75 to 84, with 203 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 17% are also on Medicaid. Their average risk score is 3.57, 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. Roshan's median patient age at 65, with 46% women.
Medicare patients, 2024541
Average age78
Average risk score3.57
Also on Medicaid17%
Dr. Roshan's Medicare patients by age, 2024
Dr. Roshan's Medicare patients by sex, 2024
- Women24846%
- Men29354%
Chronic conditions among Dr. Roshan's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes54%
- Ischemic heart disease50%
- Arthritis46%
- Heart failure44%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Roshan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Bijan Roshan wrote 1,683 Medicare Part D claims in 2024
In 2024, Dr. Roshan wrote 1,683 Medicare Part D claims for 299 patients. 93% of them were for generic drugs. CMS names the drug for 1,382 of them, across 30 drugs with 11 or more claims each, at $104,629 in total drug cost. In 2023, CMS named 1,756 claims across 35 drugs.
Part D claims, 20241,683
Drugs named by CMS30
Total drug cost$104,629
Part D patients299
Dr. Roshan's Part D claims by kind of drug, 2024
- Generic1,567 claims93%
- Brand-name116 claims7%
Dr. Roshan'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. Roshan's Part D claims, 2024
- Antibiotics1%16 of 1,683 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: 1,7562024: 1,38221%
Drugs named by CMS: 30 in 2024, 35 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. Bijan Roshan offers telehealth to Medicare patients
Dr. Roshan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Roshan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Bijan Roshan has 7 publications on record
Dmand AI links 7 papers to Dr. Roshan, published from 2011 to 2012. Dr. Roshan's most frequent co-authors are George P. Bayliss, MD, Rose B. Ganim, MD and Sarah D. Haessler, MD.
Papers7
Years published2011 to 2012
Dr. Roshan's most frequent co-authors
- George P. Bayliss, MD1 shared paper
- Rose B. Ganim, MD1 shared paper
- Sarah D. Haessler, MD1 shared paper
Recent publications by Dr. Roshan
Amino Acid SequenceApolipoprotein A-ICholesterol
See who Dr. Roshan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Roshan works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Bijan Roshan received $8,236 in industry payments from 2016 to 2025
CMS Open Payments shows 97 general payments to Dr. Roshan from 23 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 70% of the total. Calliditas Therapeutics US Inc. paid the most, $6,398.
General payments to Dr. Roshan by program year, 2016 to 2025
General payments to Dr. Roshan by kind, 2016 to 2025
$8.2Kin total
- Consulting fees$5,75070%
- Food and beverage$2,39129%
- Education$961%
Companies that paid Dr. Roshan 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. Bijan Roshan has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Roshan, most recently CMS Stage 1 EHR in 2011.
Awards and honors for Dr. Roshan
- 2011
- CMS Stage 1 EHR
- Undated
- ASN Fellow
Source: Dmand AI Professional Profile Data
Dr. Bijan Roshan graduated from Shahid Beheshti University of Medical Sciences
Dr. Roshan graduated from Shahid Beheshti University of Medical Sciences in 1989. Dr. Roshan is a member of ASN.
- Medical school
- Board certified in internal medicine
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. Bijan Roshan accepts plans from 10 insurance carriers
Dr. Roshan is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- +2 more carriersWith a free account
Plan types Dr. Roshan accepts, by number of carriers
- Medicare8
- PPO7
- HMO4
- POS4
- EPO3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Bijan Roshan'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) |
| 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) |
| 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. Bijan Roshan
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. Bijan Roshan's NPI number?
Dr. Bijan Roshan's NPI number is 1043280407. It was assigned on January 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Bijan Roshan?
Dr. Bijan Roshan is a nephrologist in San Marcos, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Bijan Roshan practice?
Dr. Roshan practices at 2135 Montiel Road Bldg B, San Marcos, CA 92069. Dr. Roshan's primary practice is DaVita San Marcos Dialysis Center in San Marcos, California. Dmand AI also links Dr. Roshan to 3 hospitals and 2 dialysis centers.
What is Dr. Bijan Roshan's office phone number?
The practice phone on file for Dr. Roshan is (760) 975-0170.
What is Dr. Bijan Roshan's medical license number?
Dr. Roshan's Colorado license number on file is 51352, one of the licenses on file in 6 states.
Which states has Dr. Bijan Roshan been licensed in?
Dmand AI has state licenses on file for Dr. Roshan in Colorado (2012 to 2015), Montana, California (2007 to 2026), Texas (2007 to 2015), Massachusetts (1997 to 2012) and Wisconsin (1996 to 2001).
Which hospitals is Dr. Bijan Roshan affiliated with?
Dr. Roshan is affiliated with Scripps Memorial Hospital La Jolla. Dmand AI links Dr. Roshan to 3 more hospitals.
What medical group is Dr. Bijan Roshan part of?
Dr. Roshan is linked to Scripps Clinic Medical Group.
Does Dr. Bijan Roshan accept Medicare?
Yes. CMS data shows Dr. Roshan billed Medicare for 4,259 services in 2024, and Dr. Roshan accepts Medicare assignment.
Does Dr. Bijan Roshan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Roshan as offering telehealth services.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Bijan Roshan see?
CMS counts 541 Medicare patients who saw Dr. Roshan in 2024, with an average age of 78.
Is Dr. Bijan Roshan board certified?
Yes. Dr. Roshan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Bijan Roshan bill to Medicare?
In 2024, Dr. Roshan's most billed Medicare services were injected or infused drug (J0885), office visit, established patient (99214) and hospital inpatient care (99232).
Where did Dr. Bijan Roshan go to medical school?
Dr. Roshan graduated from Shahid Beheshti University of Medical Sciences in 1989.
What drugs does Dr. Bijan Roshan prescribe most?
In 2024 Medicare Part D data, Dr. Roshan's most prescribed drugs by claims were Calcitriol, Amlodipine Besylate and Carvedilol.
Has Dr. Bijan Roshan received payments from drug or device companies?
CMS Open Payments shows $8,236 in general payments to Dr. Roshan from 23 companies from 2016 to 2025. The largest total came from Calliditas Therapeutics US Inc.
How long has Dr. Bijan Roshan been practicing?
Dr. Roshan graduated from medical school in 1989, 37 years ago.
Does Dr. Bijan Roshan do research?
Dmand AI links 7 publications to Dr. Roshan, published from 2011 to 2012.
Who does Dr. Bijan Roshan publish with?
Dr. Roshan's most frequent co-authors are George P. Bayliss, MD (1 shared paper), Rose B. Ganim, MD (1 shared paper) and Sarah D. Haessler, MD (1 shared paper).
What insurance does Dr. Bijan Roshan accept?
Dr. Roshan is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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