Am J Kidney Dis
DigoxinHyperkalemiaKidney Failure, Chronic
Dr. Cosmo Lyle Fraser, MD
NPI1215026760PAC ID7012825417
- Medicare services, 2024
- 3,987
- Medicare patients, 2024
- 556
- Part D claims, 2024
- 1,078
- Publications
- 4
- MIPS score, 2024
- 22
- Practice address
- 1015 8th Street, Marysville, CA 95901
- Practice phone
- Call (310) 792-2603
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
DaVita Marysville Dialysis Center
Dialysis Center - Independent · Marysville, California
Find Dr. Fraser'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. Cosmo Lyle Fraser is a nephrologist in Marysville, California
Dr. Fraser practices at DaVita Marysville Dialysis Center in Marysville, California.
Dr. Fraser's NPI, 1215026760, was assigned on October 12, 2006. Dr. Fraser graduated from SUNY Downstate Health Sciences University in 1979. Dr. Fraser holds California license C40203.
NPI and contact details
- NPI
- 1215026760NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012825417
- NPI enumeration date
- October 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 792-2603
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Cosmo Lyle Fraser practices at DaVita Marysville Dialysis Center in Marysville, California
Dr. Fraser's primary practice is DaVita Marysville Dialysis Center, at 1015 8th Street, Marysville, CA 95901 in Yuba County. The practice phone is (310) 792-2603.
- DaVita Marysville Dialysis Center1015 8th Street, Marysville, CA 95901 · Yuba CountyPhone(310) 792-2603
Source: Dmand AI Affiliation Data
Dr. Cosmo Lyle Fraser is affiliated with 7 sites of care and 1 medical group
Dr. Fraser's primary practice is DaVita Marysville Dialysis Center in Marysville, California. Dr. Fraser is also affiliated with Adventist Health and Rideout. The medical group on file is Adventist Health and Rideout. Dmand AI also links Dr. Fraser to 4 more hospitals and 1 dialysis center, each named with a free account.
DaVita Marysville Dialysis CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Cosmo Lyle Fraser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fraser practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| DaVita Marysville 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. Cosmo Lyle Fraser is one of 1,401 nephrologists in California
Nephrology is Dr. Fraser's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Fraser is board certified in internal medicine by the American Board of Internal Medicine. Dr. Fraser is licensed in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute kidney failure, chronic kidney disease, fluid and electrolyte imbalances, hypercalcemia and kidney disease among the conditions Dr. Fraser treats.
Nephrologists near Dr. Fraser
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
1,401nephrologists in California
4nephrologists in Marysville
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Cosmo Lyle Fraser billed Medicare for 3,987 services in 2024
CMS data shows 3,987 Medicare services from Dr. Fraser across 10 procedure codes in 2024, for 556 Medicare patients. Medicare paid $480,062 for them.
Medicare services, 20243,987
Medicare patients556
Paid by Medicare$480,062
Procedure codes10
Dr. Fraser's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,9652024: 2,58913%
- Tests and treatments
- 2023: 1,4292024: 1,3982%
Where Dr. Fraser's Medicare services took place, 2024
- In an office2,00050%
- In a facility1,98750%
Dr. Fraser compared with the California median for nephrologists, 2024
- Dr. Fraser
- California median
- Medicare services
- 3,987vs 1,0843.7 times
- Medicare patients
- 556vs 30781% above
- Part D claims
- 862vs 95510% below
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Fraser'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Cosmo Lyle Fraser treated 556 Medicare patients in 2024, average age 74
CMS counts 556 Medicare patients who saw Dr. Fraser in 2024. The largest group is 75 to 84, with 186 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 47% are also on Medicaid. Their average risk score is 3.36, 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. Fraser's median patient age at 73, with 47% women.
Medicare patients, 2024556
Average age74
Average risk score3.36
Also on Medicaid47%
Dr. Fraser's Medicare patients by age, 2024
Dr. Fraser's Medicare patients by sex, 2024
- Women29253%
- Men26447%
Chronic conditions among Dr. Fraser's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes59%
- Heart failure46%
- Ischemic heart disease46%
- Arthritis42%
- Atrial fibrillation34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fraser'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
- Women47%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Cosmo Lyle Fraser wrote 1,078 Medicare Part D claims in 2024
In 2024, Dr. Fraser wrote 1,078 Medicare Part D claims for 221 patients. 91% of them were for generic drugs. CMS names the drug for 862 of them, across 26 drugs with 11 or more claims each, at $99,778 in total drug cost. In 2023, CMS named 1,218 claims across 29 drugs.
Part D claims, 20241,078
Drugs named by CMS26
Total drug cost$99,778
Part D patients221
Dr. Fraser's Part D claims by kind of drug, 2024
- Generic982 claims91%
- Brand-name96 claims9%
Dr. Fraser'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. Fraser's Part D claims, 2024
- Antibiotics6%65 of 1,078 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: 1,2182024: 86229%
Drugs named by CMS: 26 in 2024, 29 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. Cosmo Lyle Fraser scored 22 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 22 out of 100 for Dr. Fraser for performance year 2024, reported individually. Dr. Fraser accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fraser as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Fraser's MIPS scores, performance year 2024
- 22of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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. Cosmo Lyle Fraser has 4 publications on record
Dmand AI links 4 papers to Dr. Fraser. Dr. Fraser's most frequent co-authors are Maxine A. Papadakis, MD and Mark P. Wexman, MD.
Papers4
Dr. Fraser's most frequent co-authors
Recent publications by Dr. Fraser
See who Dr. Fraser researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fraser 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. Cosmo Lyle Fraser received $325 in industry payments from 2017 to 2024
CMS Open Payments shows 14 general payments to Dr. Fraser from 9 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 63% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $96.
General payments to Dr. Fraser by program year, 2017 to 2024
General payments to Dr. Fraser by kind, 2017 to 2024
$325in total
- Food and beverage$20363%
- Education$12137%
Companies that paid Dr. Fraser the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Cosmo Lyle Fraser graduated from SUNY Downstate Health Sciences University
Dr. Fraser graduated from SUNY Downstate Health Sciences University in 1979.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Cosmo Lyle Fraser accepts plans from 14 insurance carriers
Dr. Fraser is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Fraser accepts, by number of carriers
- PPO9
- HMO6
- Medicare6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Cosmo Lyle Fraser'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) |
| 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 |
| 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. Cosmo Lyle Fraser
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. Cosmo Lyle Fraser's NPI number?
Dr. Cosmo Lyle Fraser's NPI number is 1215026760. It was assigned on October 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Cosmo Lyle Fraser?
Dr. Cosmo Lyle Fraser is a nephrologist in Marysville, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Cosmo Lyle Fraser practice?
Dr. Fraser practices at 1015 8th Street, Marysville, CA 95901. Dr. Fraser's primary practice is DaVita Marysville Dialysis Center in Marysville, California. Dmand AI also links Dr. Fraser to 4 hospitals and 1 dialysis center.
What is Dr. Cosmo Lyle Fraser's office phone number?
The practice phone on file for Dr. Fraser is (310) 792-2603.
What is Dr. Cosmo Lyle Fraser's medical license number?
Dr. Fraser holds California license C40203.
Which hospitals is Dr. Cosmo Lyle Fraser affiliated with?
Dr. Fraser is affiliated with Adventist Health and Rideout. Dmand AI links Dr. Fraser to 4 more hospitals.
What medical group is Dr. Cosmo Lyle Fraser part of?
Dr. Fraser is linked to Adventist Health and Rideout.
Does Dr. Cosmo Lyle Fraser accept Medicare?
Yes. CMS data shows Dr. Fraser billed Medicare for 3,987 services in 2024, and Dr. Fraser accepts Medicare assignment.
Does Dr. Cosmo Lyle Fraser offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Fraser as offering telehealth services.
What is Dr. Cosmo Lyle Fraser's MIPS score?
Dr. Fraser's MIPS final score for performance year 2024 is 22 out of 100, reported individually.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Cosmo Lyle Fraser see?
CMS counts 556 Medicare patients who saw Dr. Fraser in 2024, with an average age of 74.
Is Dr. Cosmo Lyle Fraser board certified?
Yes. Dr. Fraser is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Cosmo Lyle Fraser bill to Medicare?
In 2024, Dr. Fraser's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99214) and dialysis (90960).
Where did Dr. Cosmo Lyle Fraser go to medical school?
Dr. Fraser graduated from SUNY Downstate Health Sciences University in 1979.
What drugs does Dr. Cosmo Lyle Fraser prescribe most?
In 2024 Medicare Part D data, Dr. Fraser's most prescribed drugs by claims were Allopurinol, Fludrocortisone Acetate and Amlodipine Besylate.
Has Dr. Cosmo Lyle Fraser received payments from drug or device companies?
CMS Open Payments shows $325 in general payments to Dr. Fraser from 9 companies from 2017 to 2024. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Cosmo Lyle Fraser been practicing?
Dr. Fraser graduated from medical school in 1979, 47 years ago.
Does Dr. Cosmo Lyle Fraser do research?
Dmand AI links 4 publications to Dr. Fraser.
Who does Dr. Cosmo Lyle Fraser publish with?
Dr. Fraser's most frequent co-authors are Maxine A. Papadakis, MD (1 shared paper) and Mark P. Wexman, MD (1 shared paper).
What insurance does Dr. Cosmo Lyle Fraser accept?
Dr. Fraser is in network with 14 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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