J Theor Biol
Basic Reproduction NumberEpidemicsHost-Pathogen Interactions
Dr. Mark Makoto Tanaka, MD
NPI1104904960PAC ID0648177055
- Medicare services, 2022
- 15
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 285
- Publications
- 75
- Hospital affiliations
- 1
- Practice address
- 2500 Merced Street, San Leandro, CA 94577
- Practice phone
- Call (510) 454-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tanaka'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. Mark Makoto Tanaka is an emergency medicine physician in San Leandro, California
Dr. Tanaka practices at San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente.
Dr. Tanaka's NPI, 1104904960, was assigned on November 1, 2006. Dr. Tanaka graduated from UCSF School of Medicine in 1999. Dr. Tanaka holds California license A83467.
NPI and contact details
- NPI
- 1104904960NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648177055
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 454-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Makoto Tanaka practices at San Leandro Medical Center in San Leandro, California
Dr. Tanaka's primary practice is San Leandro Medical Center, at 2500 Merced Street, San Leandro, CA 94577 in Alameda County. The practice phone is (510) 454-1000.
- San Leandro Medical Center2500 Merced Street, San Leandro, CA 94577 · Alameda CountyPhone(510) 454-1000
Source: Dmand AI Affiliation Data
Dr. Mark Makoto Tanaka is affiliated with 1 site of care and 1 medical group
Dr. Tanaka's primary practice is San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Makoto Tanaka's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tanaka practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Leandro Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Tanaka practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Mark Makoto Tanaka is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Tanaka's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Tanaka is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Tanaka's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Illinois license
Emergency medicine physicians near Dr. Tanaka
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
7,423emergency medicine physicians in California75emergency medicine physicians in San Leandro56emergency medicine physicians at San Leandro Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Makoto Tanaka billed Medicare for 15 services in 2022
CMS data shows 15 Medicare services from Dr. Tanaka across 1 procedure code in 2022, for 14 Medicare patients. Medicare paid $2,126 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202215
Medicare patients14
Paid by Medicare$2,126
Procedure codes1
Dr. Tanaka's Medicare services by type, 2019 to 2022
- 2019
- 2022
- Office and hospital visits
- 2019: 222022: 1532%
Dr. Tanaka compared with the California median for emergency medicine physicians, 2022
- Dr. Tanaka
- California median
- Medicare services
- 15vs 26594% below
- Medicare patients
- 14vs 24394% below
- Part D claims
- 85vs 6237% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Tanaka's most billed Medicare procedure codes, 2022
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. Tanaka?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tanaka and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Makoto Tanaka treated 14 Medicare patients in 2024, average age 63
CMS counts 14 Medicare patients who saw Dr. Tanaka in 2024. The largest group is 75 to 84, with 0 patients. 75% of them have high blood pressure. Their average risk score is 2.41, 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. Tanaka's median patient age at 48, with 58% women.
Medicare patients, 202414
Average age63
Average risk score2.41
Dr. Tanaka's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Tanaka's Medicare patients, 2024
- High blood pressure75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tanaka's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Makoto Tanaka wrote 285 Medicare Part D claims in 2024
In 2024, Dr. Tanaka wrote 285 Medicare Part D claims for 194 patients. 94% of them were for generic drugs. CMS names the drug for 85 of them, across 5 drugs with 11 or more claims each, at $758 in total drug cost. In 2023, CMS named 119 claims across 6 drugs.
Part D claims, 2024285
Drugs named by CMS5
Total drug cost$758
Part D patients194
Dr. Tanaka's Part D claims by kind of drug, 2024
- Generic269 claims94%
- Brand-name16 claims6%
Dr. Tanaka'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. Tanaka's Part D claims, 2024
- Opioids5%15 of 285 claims
- Antibiotics20%57 of 285 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: 1192024: 8529%
Drugs named by CMS: 5 in 2024, 6 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. Mark Makoto Tanaka takes part in Medicare
Dr. Tanaka 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)
For MedTech and pharma teams
Find emergency medicine physicians like Dr. Tanaka by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark Makoto Tanaka has 75 publications on record
Dmand AI links 75 papers to Dr. Tanaka, published from 2005 to 2021. 2013 was the busiest year, with 6. The most frequent topics are Mycobacterium tuberculosis, Evolution, Molecular and Models, Genetic. Dr. Tanaka has published most often in Infect Genet Evol. Dr. Tanaka's most frequent co-author is Philip Christy Hopewell, MD.
Papers75
Years published2005 to 2021
Dr. Tanaka's papers by year, 2012 to 2021
Topics Dr. Tanaka writes about most
- Mycobacterium tuberculosis
- Evolution, Molecular
- Models, Genetic
- Genotype
- Phylogeny
- Bacteria
- Disease Outbreaks
- Genome, Bacterial
Dr. Tanaka's most frequent co-authors
- Philip Christy Hopewell, MD1 shared paper
Recent publications by Dr. Tanaka
Proc Biol Sci
BifidobacteriumBreast FeedingFeces
Appl Environ Microbiol
BacteriaBiological EvolutionGenome, Bacterial
Antarctic RegionsBacteriaBiodiversity
AustraliaBacterial Outer Membrane ProteinsBordetella pertussis
See who Dr. Tanaka researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tanaka works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Makoto Tanaka received $838 in industry payments from 2016 to 2023
CMS Open Payments shows 49 general payments to Dr. Tanaka from 2 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Sandoz Inc. paid the most, $704.
General payments to Dr. Tanaka by program year, 2016 to 2023
Companies that paid Dr. Tanaka 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. Mark Makoto Tanaka graduated from UCSF School of Medicine
Dr. Tanaka graduated from UCSF School of Medicine in 1999.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Mark Makoto Tanaka accepts plans from 1 insurance carrier
Dr. Tanaka is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Tanaka accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Makoto Tanaka'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. Mark Makoto Tanaka
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. Mark Makoto Tanaka's NPI number?
Dr. Mark Makoto Tanaka's NPI number is 1104904960. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Makoto Tanaka?
Dr. Mark Makoto Tanaka is an emergency medicine physician in San Leandro, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Mark Makoto Tanaka practice?
Dr. Tanaka practices at 2500 Merced Street, San Leandro, CA 94577. Dr. Tanaka's primary practice is San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente.
What is Dr. Mark Makoto Tanaka's office phone number?
The practice phone on file for Dr. Tanaka is (510) 454-1000.
What is Dr. Mark Makoto Tanaka's medical license number?
Dr. Tanaka holds California license A83467, one of the licenses on file in 2 states.
Which states has Dr. Mark Makoto Tanaka been licensed in?
Dmand AI has state licenses on file for Dr. Tanaka in California (2003 to 2027) and Illinois (1999 to 2005).
Which hospitals is Dr. Mark Makoto Tanaka affiliated with?
Dr. Tanaka practices at San Leandro Medical Center in San Leandro, California.
What medical group is Dr. Mark Makoto Tanaka part of?
Dr. Tanaka is linked to The Permanente Medical Group, Inc.
Does Dr. Mark Makoto Tanaka accept Medicare?
Yes. CMS data shows Dr. Tanaka billed Medicare for 15 services in 2022, and Dr. Tanaka accepts Medicare assignment.
How many Medicare patients does Dr. Mark Makoto Tanaka see?
CMS counts 14 Medicare patients who saw Dr. Tanaka in 2024, with an average age of 63.
Show 9 more questionsShow fewer questions
Is Dr. Mark Makoto Tanaka board certified?
Yes. Dr. Tanaka is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Mark Makoto Tanaka bill to Medicare?
In 2022, Dr. Tanaka's most billed Medicare services were emergency department visit (99285).
Where did Dr. Mark Makoto Tanaka go to medical school?
Dr. Tanaka graduated from UCSF School of Medicine in 1999.
What drugs does Dr. Mark Makoto Tanaka prescribe most?
In 2024 Medicare Part D data, Dr. Tanaka's most prescribed drugs by claims were Ondansetron ODT, Moxifloxacin and Ofloxacin.
Has Dr. Mark Makoto Tanaka received payments from drug or device companies?
CMS Open Payments shows $838 in general payments to Dr. Tanaka from 2 companies from 2016 to 2023. The largest total came from Sandoz Inc.
How long has Dr. Mark Makoto Tanaka been practicing?
Dr. Tanaka graduated from medical school in 1999, 27 years ago.
Does Dr. Mark Makoto Tanaka do research?
Dmand AI links 75 publications to Dr. Tanaka, published from 2005 to 2021.
Who does Dr. Mark Makoto Tanaka publish with?
Dr. Tanaka's most frequent co-authors are Philip Christy Hopewell, MD (1 shared paper).
What insurance does Dr. Mark Makoto Tanaka accept?
Dr. Tanaka is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card