Antibodies, MonoclonalAntibody SpecificityAntigen-Antibody Complex
Dr. Ernesto Zatarain-Rios, MD
NPI1487720439PAC ID6204925126
- Medicare services, 2024
- 1,505
- Medicare patients, 2024
- 258
- Part D claims, 2024
- 1,412
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 1501 Trousdale Drive, Burlingame, CA 94010
- Practice phone
- Call (650) 696-5400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Zatarain-Rios' professional email, personal email and mobile number
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Dr. Ernesto Zatarain-Rios is a rheumatologist in Burlingame, California
Dr. Zatarain-Rios practices at Mills-Peninsula Medical Center in Burlingame, California, part of Sutter Health.
Dr. Zatarain-Rios' NPI, 1487720439, was assigned on November 28, 2006. Dr. Zatarain-Rios graduated from Autonomous University of Chihuahua Faculty of Medicine in 1979. Dr. Zatarain-Rios' California license number on file is A46442.
NPI and contact details
- NPI
- 1487720439NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6204925126
- NPI enumeration date
- November 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (650) 696-5400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- 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. Ernesto Zatarain-Rios practices at Mills-Peninsula Medical Center in Burlingame, California
Dr. Zatarain-Rios' primary practice is Mills-Peninsula Medical Center, at 1501 Trousdale Drive, Burlingame, CA 94010 in San Mateo County. The practice phone is (650) 696-5400.
- Mills-Peninsula Medical Center1501 Trousdale Drive, Burlingame, CA 94010 · San Mateo CountyPhone(650) 696-5400
Source: Dmand AI Affiliation Data
Dr. Ernesto Zatarain-Rios is affiliated with 1 site of care and 1 medical group
Dr. Zatarain-Rios' primary practice is Mills-Peninsula Medical Center in Burlingame, California, part of Sutter Health. The medical group on file is Palo Alto Foundation Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ernesto Zatarain-Rios' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zatarain-Rios practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mills-Peninsula Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ernesto Zatarain-Rios is one of 821 rheumatologists in California
Rheumatology is Dr. Zatarain-Rios' primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Zatarain-Rios is board certified in internal medicine by the American Board of Internal Medicine. Dr. Zatarain-Rios has a license on file in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists arteritis, arthritis, fibromyalgia and chronic pain, fluid in a joint, gout, joint arthropathy, joint pain and lupus among the conditions Dr. Zatarain-Rios treats.
Rheumatologists near Dr. Zatarain-Rios
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
821rheumatologists in California
3rheumatologists in Burlingame
3rheumatologists at Mills-Peninsula Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ernesto Zatarain-Rios billed Medicare for 1,505 services in 2024
CMS data shows 1,505 Medicare services from Dr. Zatarain-Rios across 9 procedure codes in 2024, for 258 Medicare patients. Medicare paid $58,401 for them. Every service was in an office.
Medicare services, 20241,505
Medicare patients258
Paid by Medicare$58,401
Procedure codes9
Dr. Zatarain-Rios' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 1402024: 927562%
- Office and hospital visits
- 2023: 4992024: 4618%
- Other services
- 2023: 02024: 81
- Surgery
- 2023: 562024: 3636%
Dr. Zatarain-Rios compared with the California median for rheumatologists, 2024
- Dr. Zatarain-Rios
- California median
- Medicare services
- 1,505vs 90067% above
- Medicare patients
- 258vs 21619% above
- Part D claims
- 1,270vs 96232% above
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Zatarain-Rios' 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. Zatarain-Rios and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ernesto Zatarain-Rios treated 258 Medicare patients in 2024, average age 76
CMS counts 258 Medicare patients who saw Dr. Zatarain-Rios in 2024. The largest group is 75 to 84, with 106 patients. 72% of them have arthritis, and 72% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Zatarain-Rios' median patient age at 73, with 81% women.
Medicare patients, 2024258
Average age76
Average risk score1.22
Also on Medicaid5%
Dr. Zatarain-Rios' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Zatarain-Rios' Medicare patients by sex, 2024
- Women20780%
- Men5120%
Chronic conditions among Dr. Zatarain-Rios' Medicare patients, 2024
- Arthritis72%
- High cholesterol72%
- Osteoporosis69%
- High blood pressure64%
- Ischemic heart disease23%
- Chronic kidney disease22%
- Diabetes22%
- Anxiety21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Zatarain-Rios' 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
- Women81%
- Men15%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ernesto Zatarain-Rios wrote 1,412 Medicare Part D claims in 2024
In 2024, Dr. Zatarain-Rios wrote 1,412 Medicare Part D claims for 238 patients. 83% of them were for generic drugs. CMS names the drug for 1,270 of them, across 27 drugs with 11 or more claims each, at $1,990,693 in total drug cost. In 2023, CMS named 1,157 claims across 18 drugs.
Part D claims, 20241,412
Drugs named by CMS27
Total drug cost$2M
Part D patients238
Dr. Zatarain-Rios' Part D claims by kind of drug, 2024
- Generic1,167 claims83%
- Brand-name and other245 claims17%
Dr. Zatarain-Rios' 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. Zatarain-Rios' Part D claims, 2024
- Opioids3%49 of 1,412 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: 1,1572024: 1,27010%
Drugs named by CMS: 27 in 2024, 18 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. Ernesto Zatarain-Rios offers telehealth to Medicare patients
Dr. Zatarain-Rios accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Zatarain-Rios as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ernesto Zatarain-Rios has 2 publications on record
Dmand AI links 2 papers to Dr. Zatarain-Rios. The most frequent topics are Antigen-Antibody Complex, Cartilage, Articular and Fluorescent Antibody Technique.
Papers2
Topics Dr. Zatarain-Rios writes about most
- Antigen-Antibody Complex
- Cartilage, Articular
- Fluorescent Antibody Technique
Recent publications by Dr. Zatarain-Rios
Arthritis Rheum
AntibodiesAntigen-Antibody ComplexAntigens
See who Dr. Zatarain-Rios researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Zatarain-Rios works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ernesto Zatarain-Rios received $704 in industry payments from 2016 to 2023
CMS Open Payments shows 19 general payments to Dr. Zatarain-Rios from 7 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 82% of the total. Amgen Inc. paid the most, $207.
General payments to Dr. Zatarain-Rios by program year, 2016 to 2023
General payments to Dr. Zatarain-Rios by kind, 2016 to 2023
$704in total
- Food and beverage$58082%
- Education$12418%
Companies that paid Dr. Zatarain-Rios the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ernesto Zatarain-Rios graduated from Autonomous University of Chihuahua Faculty of Medicine
Dr. Zatarain-Rios graduated from Autonomous University of Chihuahua Faculty of Medicine in 1979.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ernesto Zatarain-Rios accepts plans from 11 insurance carriers
Dr. Zatarain-Rios is in network with 11 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +3 more carriersWith a free account
Plan types Dr. Zatarain-Rios accepts, by number of carriers
- PPO7
- HMO6
- EPO4
- Medicare3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Ernesto Zatarain-Rios'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) |
| 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. Ernesto Zatarain-Rios
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. Ernesto Zatarain-Rios' NPI number?
Dr. Ernesto Zatarain-Rios' NPI number is 1487720439. It was assigned on November 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ernesto Zatarain-Rios?
Dr. Ernesto Zatarain-Rios is a rheumatologist in Burlingame, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Ernesto Zatarain-Rios practice?
Dr. Zatarain-Rios practices at 1501 Trousdale Drive, Burlingame, CA 94010. Dr. Zatarain-Rios' primary practice is Mills-Peninsula Medical Center in Burlingame, California, part of Sutter Health.
What is Dr. Ernesto Zatarain-Rios' office phone number?
The practice phone on file for Dr. Zatarain-Rios is (650) 696-5400.
What is Dr. Ernesto Zatarain-Rios' medical license number?
Dr. Zatarain-Rios' California license number on file is A46442.
Which hospitals is Dr. Ernesto Zatarain-Rios affiliated with?
Dr. Zatarain-Rios practices at Mills-Peninsula Medical Center in Burlingame, California.
What medical group is Dr. Ernesto Zatarain-Rios part of?
Dr. Zatarain-Rios is linked to Palo Alto Foundation Medical Group.
Does Dr. Ernesto Zatarain-Rios accept Medicare?
Yes. CMS data shows Dr. Zatarain-Rios billed Medicare for 1,505 services in 2024, and Dr. Zatarain-Rios accepts Medicare assignment.
Does Dr. Ernesto Zatarain-Rios offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Zatarain-Rios as offering telehealth services.
How many Medicare patients does Dr. Ernesto Zatarain-Rios see?
CMS counts 258 Medicare patients who saw Dr. Zatarain-Rios in 2024, with an average age of 76.
Show 8 more questionsShow fewer questions
Is Dr. Ernesto Zatarain-Rios board certified?
Yes. Dr. Zatarain-Rios is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Ernesto Zatarain-Rios bill to Medicare?
In 2024, Dr. Zatarain-Rios' most billed Medicare services were injected or infused drug (J1010), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. Ernesto Zatarain-Rios go to medical school?
Dr. Zatarain-Rios graduated from Autonomous University of Chihuahua Faculty of Medicine in 1979.
What drugs does Dr. Ernesto Zatarain-Rios prescribe most?
In 2024 Medicare Part D data, Dr. Zatarain-Rios' most prescribed drugs by claims were Hydroxychloroquine Sulfate, Prednisone and Methotrexate.
Has Dr. Ernesto Zatarain-Rios received payments from drug or device companies?
CMS Open Payments shows $704 in general payments to Dr. Zatarain-Rios from 7 companies from 2016 to 2023. The largest total came from Amgen Inc.
How long has Dr. Ernesto Zatarain-Rios been practicing?
Dr. Zatarain-Rios graduated from medical school in 1979, 47 years ago.
Does Dr. Ernesto Zatarain-Rios do research?
Dmand AI links 2 publications to Dr. Zatarain-Rios.
What insurance does Dr. Ernesto Zatarain-Rios accept?
Dr. Zatarain-Rios is in network with 11 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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