Dr. Ester S. Mark, MD
- Medicare services, 2019
- 334
- Part D claims, 2020
- 46
- Industry payments
- $248
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 100 S Ellsworth Ave, San Mateo, CA 94401
- Practice phone
- Call (833) 364-6362
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Beverly Hills Surgical Institute
San Mateo, California
Find Dr. Mark'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. Ester S. Mark is an internist in San Mateo, California
Dr. Mark practices at Beverly Hills Surgical Institute in San Mateo, California.
Dr. Mark's NPI, 1770683468, was assigned on September 23, 2006. Dr. Mark graduated from Sapienza University of Rome in 1985. Dr. Mark holds California license A55272.
- NPI
- 1770683468NPI Registry (opens in a new tab)
- NPI enumeration date
- September 23, 2006
- NPI status
- Active
- Practice phone
- (833) 364-6362
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Ester S. Mark practices at Beverly Hills Surgical Institute in San Mateo, California
Dr. Mark's primary practice is Beverly Hills Surgical Institute, at 100 S Ellsworth Ave, San Mateo, CA 94401 in San Mateo County. The practice phone is (833) 364-6362.
- Beverly Hills Surgical Institute100 S Ellsworth Ave, San Mateo, CA 94401 · San Mateo CountyPhone(833) 364-6362
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ester S. Mark is affiliated with 2 sites of care
Dr. Mark's primary practice is Beverly Hills Surgical Institute in San Mateo, California. Dmand AI also links Dr. Mark to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ester S. Mark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mark practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Beverly Hills Surgical Institute | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ester S. Mark is one of 16,751 internists in California
Internal medicine is Dr. Mark's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Mark is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Mark
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. Ester S. Mark billed Medicare for 334 services in 2019
CMS data shows 334 Medicare services from Dr. Mark across 10 procedure codes in 2019. Medicare paid $25,905 for them. Every service was in an office.
Dr. Mark's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Tests and treatments
- 2018: 902019: 17089%
- Office and hospital visits
- 2018: 472019: 8172%
- Imaging
- 2018: 302019: 4963%
- Surgery
- 2018: 372019: 348%
Dr. Mark compared with the California median for internists, 2019
- Dr. Mark
- California median
- Medicare services
- 334vs 3617% below
- Part D claims
- 46vs 42189% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Mark's most billed Medicare procedure codes, 2019
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. Mark and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ester S. Mark's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Mark's median patient age at 57, with 48% women.
Dr. Mark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women48%
- Men50%
Source: Dmand AI Patient Panel Data
Dr. Ester S. Mark wrote 46 Medicare Part D claims in 2020
In 2020, Dr. Mark wrote 46 Medicare Part D claims. Every claim was for a generic drug. They cover 3 drugs, with $654 in total drug cost. In 2019, CMS named 12 claims across 1 drug.
Dr. Mark's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 122020: 46283%
Drugs named by CMS: 3 in 2020, 1 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ester S. Mark received $248 in industry payments from 2019 to 2023
CMS Open Payments shows 4 general payments to Dr. Mark from 2 drug and device companies from 2019 to 2023. Food and beverage make up the largest share, 100% of the total. TherapeuticsMD, Inc. paid the most, $133.
General payments to Dr. Mark by program year, 2019 to 2023
Companies that paid Dr. Mark the most, 2019 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ester S. Mark graduated from Sapienza University of Rome
Dr. Mark graduated from Sapienza University of Rome in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ester S. Mark'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Ester S. Mark
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. Ester S. Mark's NPI number?
Dr. Ester S. Mark's NPI number is 1770683468. It was assigned on September 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ester S. Mark?
Dr. Ester S. Mark is an internist in San Mateo, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ester S. Mark practice?
Dr. Mark practices at 100 S Ellsworth Ave, San Mateo, CA 94401. Dr. Mark's primary practice is Beverly Hills Surgical Institute in San Mateo, California. Dmand AI also links Dr. Mark to 1 physician office.
What is Dr. Ester S. Mark's office phone number?
The practice phone on file for Dr. Mark is (833) 364-6362.
What is Dr. Ester S. Mark's medical license number?
Dr. Mark holds California license A55272.
Does Dr. Ester S. Mark accept Medicare?
Yes. CMS data shows Dr. Mark billed Medicare for 334 services in 2019.
What services does Dr. Ester S. Mark bill to Medicare?
In 2019, Dr. Mark's most billed Medicare services were heart test or procedure (93000), office visit, new patient (99204) and surgery: heart and blood vessels (36415).
Where did Dr. Ester S. Mark go to medical school?
Dr. Mark graduated from Sapienza University of Rome in 1985.
What drugs does Dr. Ester S. Mark prescribe most?
In 2020 Medicare Part D data, Dr. Mark's most prescribed drugs by claims were Levothyroxine Sodium, Clonazepam and Atorvastatin Calcium.
Has Dr. Ester S. Mark received payments from drug or device companies?
CMS Open Payments shows $248 in general payments to Dr. Mark from 2 companies from 2019 to 2023. The largest total came from TherapeuticsMD, Inc.
How long has Dr. Ester S. Mark been practicing?
Dr. Mark graduated from medical school in 1985, 41 years ago.
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