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Dr. Marcos H. Siqueiros, MD
NPI1790862647PAC ID1355530064
- Medicare services, 2024
- 16
- Medicare patients, 2024
- 28
- Part D claims, 2024
- 7,170
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 710 Lawrence Expy, Santa Clara, CA 95051
- Practice phone
- Call (408) 851-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Santa Clara, California
Find Dr. Siqueiros' 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. Marcos H. Siqueiros is an internist in Santa Clara, California
Dr. Siqueiros practices at Permanente Medical Group Inc in Santa Clara, California.
Dr. Siqueiros' NPI, 1790862647, was assigned on October 31, 2006. Dr. Siqueiros graduated from UCSF School of Medicine in 1995. Dr. Siqueiros holds California license A61782.
NPI and contact details
- NPI
- 1790862647NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1355530064
- NPI enumeration date
- October 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 851-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marcos H. Siqueiros practices at Permanente Medical Group Inc in Santa Clara, California
Dr. Siqueiros' primary practice is Permanente Medical Group Inc, at 710 Lawrence Expy, Santa Clara, CA 95051 in Santa Clara County. The practice phone is (408) 851-1000.
- Permanente Medical Group Inc710 Lawrence Expy, Santa Clara, CA 95051 · Santa Clara CountyPhone(408) 851-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marcos H. Siqueiros is affiliated with 4 sites of care and 1 medical group
Dr. Siqueiros' primary practice is Permanente Medical Group Inc in Santa Clara, California. Dr. Siqueiros is also affiliated with Santa Clara Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Siqueiros to 1 more group practice or clinic and 1 hospice, each named with a free account.
Permanente Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marcos H. Siqueiros' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siqueiros practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marcos H. Siqueiros is one of 16,751 internists in California
Internal medicine is Dr. Siqueiros' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Siqueiros is board certified in internal medicine by the American Board of Internal Medicine. Dr. Siqueiros is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute gastroduodenitis, atrial fibrillation and flutter, bursitis, chronic obstructive pulmonary disease (COPD), conjunctivitis, heart failure, hives and intellectual and developmental disabilities among the conditions Dr. Siqueiros treats.
Internists near Dr. Siqueiros
Counts of internists 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. Marcos H. Siqueiros billed Medicare for 16 services in 2024
CMS data shows 16 Medicare services from Dr. Siqueiros across 1 procedure code in 2024, for 28 Medicare patients. Medicare paid $101 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202416
Medicare patients28
Paid by Medicare$101
Procedure codes1
Dr. Siqueiros' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 112024: 1645%
Dr. Siqueiros compared with the California median for internists, 2024
- Dr. Siqueiros
- California median
- Medicare services
- 16vs 36196% below
- Medicare patients
- 28vs 15181% below
- Part D claims
- 6,482vs 42115.4 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Siqueiros' 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. Siqueiros?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Siqueiros and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marcos H. Siqueiros treated 28 Medicare patients in 2024, average age 68
CMS counts 28 Medicare patients who saw Dr. Siqueiros in 2024. The largest group is under 65, with 11 patients. 71% of them have high blood pressure, and 71% have high cholesterol. Their average risk score is 2.61, 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. Siqueiros' median patient age at 62, with 51% women.
Medicare patients, 202428
Average age68
Average risk score2.61
Dr. Siqueiros' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Siqueiros' Medicare patients by sex, 2024
- Women1450%
- Men1450%
Chronic conditions among Dr. Siqueiros' Medicare patients, 2024
- High blood pressure71%
- High cholesterol71%
- Ischemic heart disease43%
Share of Medicare patients with each condition. A patient can have several.
Dr. Siqueiros' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marcos H. Siqueiros wrote 7,170 Medicare Part D claims in 2024
In 2024, Dr. Siqueiros wrote 7,170 Medicare Part D claims for 492 patients. 89% of them were for generic drugs. CMS names the drug for 6,482 of them, across 113 drugs with 11 or more claims each, at $365,907 in total drug cost. In 2023, CMS named 6,681 claims across 112 drugs.
Part D claims, 20247,170
Drugs named by CMS113
Total drug cost$365,907
Part D patients492
Dr. Siqueiros' Part D claims by kind of drug, 2024
- Generic6,375 claims89%
- Brand-name732 claims10%
- Other63 claims1%
Dr. Siqueiros' 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. Siqueiros' Part D claims, 2024
- Opioids1%105 of 7,170 claims
- Antibiotics3%218 of 7,170 claims
- Antipsychotics, patients 65 and over0%32 of 7,170 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: 6,6812024: 6,4823%
Drugs named by CMS: 113 in 2024, 112 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. Marcos H. Siqueiros takes part in Medicare
Dr. Siqueiros 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)
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Dr. Marcos H. Siqueiros has 1 publication on record
Dmand AI links 1 paper to Dr. Siqueiros in 2023. Dr. Siqueiros' most frequent co-authors are Edward James Durant, MD, Dustin G. Mark, MD and David R. Vinson, MD.
Papers1
Dr. Siqueiros' most frequent co-authors
- Edward James Durant, MD1 shared paper
- Dustin G. Mark, MD1 shared paper
- David R. Vinson, MD1 shared paper
Recent publications by Dr. Siqueiros
See who Dr. Siqueiros researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Siqueiros works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marcos H. Siqueiros has 1 award and honors on record
Dmand AI lists 1 award for Dr. Siqueiros, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Siqueiros
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Marcos H. Siqueiros graduated from UCSF School of Medicine
Dr. Siqueiros graduated from UCSF School of Medicine in 1995.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Marcos H. Siqueiros accepts plans from 2 insurance carriers
Dr. Siqueiros is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Siqueiros accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marcos H. Siqueiros'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 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 |
| 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. Marcos H. Siqueiros
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. Marcos H. Siqueiros' NPI number?
Dr. Marcos H. Siqueiros' NPI number is 1790862647. It was assigned on October 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marcos H. Siqueiros?
Dr. Marcos H. Siqueiros is an internist in Santa Clara, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Marcos H. Siqueiros practice?
Dr. Siqueiros practices at 710 Lawrence Expy, Santa Clara, CA 95051. Dr. Siqueiros' primary practice is Permanente Medical Group Inc in Santa Clara, California. Dmand AI also links Dr. Siqueiros to 1 group practice or clinic and 1 hospice.
What is Dr. Marcos H. Siqueiros' office phone number?
The practice phone on file for Dr. Siqueiros is (408) 851-1000.
What is Dr. Marcos H. Siqueiros' medical license number?
Dr. Siqueiros holds California license A61782.
Which hospitals is Dr. Marcos H. Siqueiros affiliated with?
Dr. Siqueiros is affiliated with Santa Clara Medical Center.
What medical group is Dr. Marcos H. Siqueiros part of?
Dr. Siqueiros is linked to The Permanente Medical Group, Inc.
Does Dr. Marcos H. Siqueiros accept Medicare?
Yes. CMS data shows Dr. Siqueiros billed Medicare for 16 services in 2024, and Dr. Siqueiros accepts Medicare assignment.
How many Medicare patients does Dr. Marcos H. Siqueiros see?
CMS counts 28 Medicare patients who saw Dr. Siqueiros in 2024, with an average age of 68.
Is Dr. Marcos H. Siqueiros board certified?
Yes. Dr. Siqueiros is board certified in internal medicine by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Marcos H. Siqueiros bill to Medicare?
In 2024, Dr. Siqueiros' most billed Medicare services were heart test or procedure (93010).
Where did Dr. Marcos H. Siqueiros go to medical school?
Dr. Siqueiros graduated from UCSF School of Medicine in 1995.
What drugs does Dr. Marcos H. Siqueiros prescribe most?
In 2024 Medicare Part D data, Dr. Siqueiros' most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Levothyroxine Sodium.
How long has Dr. Marcos H. Siqueiros been practicing?
Dr. Siqueiros graduated from medical school in 1995, 31 years ago.
Does Dr. Marcos H. Siqueiros do research?
Dmand AI links 1 publication to Dr. Siqueiros.
Who does Dr. Marcos H. Siqueiros publish with?
Dr. Siqueiros' most frequent co-authors are Edward James Durant, MD (1 shared paper), Dustin G. Mark, MD (1 shared paper) and David R. Vinson, MD (1 shared paper).
What insurance does Dr. Marcos H. Siqueiros accept?
Dr. Siqueiros is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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