Esther S. Ahn

  • Marina Del Rey, CA
  • Internist
NPI1023375847PAC ID9234446006
Medicare services, 2024
452
Medicare patients, 2024
110
Part D claims, 2024
1,811
Hospital affiliations
2
Industry payments
$327
Practice address
4676 Admiralty Way, Marina Del Rey, CA 90292
Practice phone
Call (310) 385-3200
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Cedars-Sinai Medical Care Foundation

Marina Del Rey, California

See all 5 affiliations

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Esther S. Ahn is an internist in Marina Del Rey, California

Esther Ahn practices at Cedars-Sinai Medical Care Foundation in Marina Del Rey, California.

Esther Ahn's NPI, 1023375847, was assigned on April 18, 2012. Esther Ahn holds California license 128139.

NPI and contact details
Medicare PAC ID
9234446006
NPI enumeration date
April 18, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(310) 385-3200
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
40
Medical school graduation
2012

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Esther S. Ahn practices at Cedars-Sinai Medical Care Foundation in Marina Del Rey, California

Esther Ahn's primary practice is Cedars-Sinai Medical Care Foundation, at 4676 Admiralty Way, Marina Del Rey, CA 90292 in Los Angeles County. The practice phone is (310) 385-3200.

  • Cedars-Sinai Medical Care Foundation
    4676 Admiralty Way, Marina Del Rey, CA 90292 · Los Angeles CountyPhone(310) 385-3200

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Esther S. Ahn is affiliated with 4 sites of care and 1 medical group

Esther Ahn's primary practice is Cedars-Sinai Medical Care Foundation in Marina Del Rey, California. Esther Ahn is also affiliated with Cedars-Sinai Marina Hospital. The medical group on file is Cedars-Sinai Medical Group. Dmand AI also links Esther Ahn to 1 more hospital and 1 group practice or clinic, each named with a free account.

See all 5 affiliations for Esther Ahn

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Esther S. Ahn's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Esther Ahn practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Cedars-Sinai Medical Care FoundationAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Esther S. Ahn is one of 16,751 internists in California

Internal medicine is Esther Ahn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Esther Ahn is board certified in internal medicine by the American Board of Internal Medicine. Esther Ahn is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense 128139 · taxonomy 207R00000X

Internists near Esther Ahn

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

Esther S. Ahn billed Medicare for 452 services in 2024

CMS data shows 452 Medicare services from Esther Ahn across 8 procedure codes in 2024, for 110 Medicare patients. Medicare paid $14,992 for them. Every service was in an office.

Medicare services, 2024452
Medicare patients110
Paid by Medicare$14,992
Procedure codes8

Esther Ahn's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 2162024: 2103%
Surgery
2023: 1312024: 1282%
Other services
2023: 932024: 7915%
Tests and treatments
2023: 462024: 3524%

Esther Ahn compared with the California median for internists, 2024

  • Esther Ahn
  • California median
Medicare services
452vs 36125% above
Medicare patients
110vs 15127% below
Part D claims
1,387vs 4213.3 times

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Esther Ahn'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.

See all procedures by Esther Ahn

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Esther S. Ahn treated 110 Medicare patients in 2024, average age 73

CMS counts 110 Medicare patients who saw Esther Ahn in 2024. The largest group is 65 to 74, with 54 patients. 69% of them have high cholesterol, and 68% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Esther Ahn's median patient age at 57, with 72% women.

Medicare patients, 2024110
Average age73
Average risk score1.03
Also on Medicaid15%

Esther Ahn's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Esther Ahn's Medicare patients by sex, 2024

  • Women7568%
  • Men3532%

Chronic conditions among Esther Ahn's Medicare patients, 2024

  1. High cholesterol69%
  2. High blood pressure68%
  3. Arthritis38%
  4. Diabetes22%
  5. Anxiety19%
  6. Ischemic heart disease19%
  7. Osteoporosis19%
  8. Chronic kidney disease18%

Share of Medicare patients with each condition. A patient can have several.

Esther Ahn'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

  • Women72%
  • Men26%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Esther S. Ahn wrote 1,811 Medicare Part D claims in 2024

In 2024, Esther Ahn wrote 1,811 Medicare Part D claims for 220 patients. 88% of them were for generic drugs. CMS names the drug for 1,387 of them, across 42 drugs with 11 or more claims each, at $35,987 in total drug cost. In 2023, CMS named 1,375 claims across 48 drugs.

Part D claims, 20241,811
Drugs named by CMS42
Total drug cost$35,987
Part D patients220

Esther Ahn's Part D claims by kind of drug, 2024

  • Generic1,594 claims88%
  • Brand-name201 claims11%
  • Other16 claims1%

Esther Ahn'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 Esther Ahn's Part D claims, 2024

  • Opioids4%68 of 1,811 claims
  • Antibiotics1%11 of 1,811 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: 1,3752024: 1,3871%

Drugs named by CMS: 42 in 2024, 48 in 2023.

See all prescribing by Esther Ahn

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

Esther S. Ahn offers telehealth to Medicare patients

Esther Ahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Esther Ahn as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Esther S. Ahn received $327 in industry payments from 2016 to 2017

CMS Open Payments shows 3 general payments to Esther Ahn from 3 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $128.

General payments to Esther Ahn by program year, 2016 to 2017

Companies that paid Esther Ahn the most, 2016 to 2017

Share is of all general payments to this clinician.

See all payments to Esther Ahn

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Esther S. Ahn is board certified in internal medicine

  1. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Sources for Esther S. Ahn's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Esther S. Ahn

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Esther S. Ahn's NPI number?

Esther S. Ahn's NPI number is 1023375847. It was assigned on April 18, 2012, and it is active in the NPI Registry.

What does Esther S. Ahn specialize in?

Esther S. Ahn is an internist in Marina Del Rey, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Esther S. Ahn practice?

Esther Ahn practices at 4676 Admiralty Way, Marina Del Rey, CA 90292. Esther Ahn's primary practice is Cedars-Sinai Medical Care Foundation in Marina Del Rey, California. Dmand AI also links Esther Ahn to 1 hospital and 1 group practice or clinic.

What is Esther S. Ahn's office phone number?

The practice phone on file for Esther Ahn is (310) 385-3200.

What is Esther S. Ahn's medical license number?

Esther Ahn holds California license 128139.

Which hospitals is Esther S. Ahn affiliated with?

Esther Ahn is affiliated with Cedars-Sinai Marina Hospital. Dmand AI links Esther Ahn to 1 more hospital.

What medical group is Esther S. Ahn part of?

Esther Ahn is linked to Cedars-Sinai Medical Group.

Does Esther S. Ahn accept Medicare?

Yes. CMS data shows Esther Ahn billed Medicare for 452 services in 2024, and Esther Ahn accepts Medicare assignment.

Does Esther S. Ahn offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Esther Ahn as offering telehealth services.

How many Medicare patients does Esther S. Ahn see?

CMS counts 110 Medicare patients who saw Esther Ahn in 2024, with an average age of 73.

Show 5 more questionsShow fewer questions

Is Esther S. Ahn board certified?

Yes. Esther Ahn is board certified in internal medicine by the American Board of Internal Medicine.

What services does Esther S. Ahn bill to Medicare?

In 2024, Esther Ahn's most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and medicare service (G0439).

What drugs does Esther S. Ahn prescribe most?

In 2024 Medicare Part D data, Esther Ahn's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.

Has Esther S. Ahn received payments from drug or device companies?

CMS Open Payments shows $327 in general payments to Esther Ahn from 3 companies from 2016 to 2017. The largest total came from Merck Sharp & Dohme Corporation.

How long has Esther S. Ahn been practicing?

Esther Ahn graduated from medical school in 2012, 14 years ago.

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