Dr. Sarah Elizabeth Stone Coskun, MD

  • Chula Vista, CA
  • Internist
NPI1104878545PAC ID2466413109
Medicare services, 2024
459
Medicare patients, 2024
177
Part D claims, 2024
154
MIPS score, 2024
89
Hospital affiliations
2
Practice address
751 Medical Center Court, Chula Vista, CA 91911
Practice phone
Call (619) 502-5800
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Sharp Chula Vista Medical Center

Hospital · Chula Vista, California

See all 6 affiliations

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Dr. Sarah Elizabeth Stone Coskun is an internist in Chula Vista, California

Dr. Coskun practices at Sharp Chula Vista Medical Center in Chula Vista, California, part of Sharp HealthCare.

Dr. Coskun's NPI, 1104878545, was assigned on May 16, 2006. Dr. Coskun graduated from The Warren Alpert Medical School of Brown University in 2001. Dr. Coskun holds California license A81233.

NPI and contact details
Medicare PAC ID
2466413109
NPI enumeration date
May 16, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(619) 502-5800
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
51
Medical school graduation
2001

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

Dr. Sarah Elizabeth Stone Coskun practices at Sharp Chula Vista Medical Center in Chula Vista, California

Dr. Coskun's primary practice is Sharp Chula Vista Medical Center, at 751 Medical Center Court, Chula Vista, CA 91911 in San Diego County. The practice phone is (619) 502-5800.

Source: Dmand AI Affiliation Data

Dr. Sarah Elizabeth Stone Coskun is affiliated with 4 sites of care and 2 medical groups

Dr. Coskun's primary practice is Sharp Chula Vista Medical Center in Chula Vista, California, part of Sharp HealthCare. Dr. Coskun is also affiliated with Sharp Memorial Hospital. The medical group on file is Emergency and Acute Care Medical Corporation. Dmand AI also links Dr. Coskun to 2 more group practices and clinics and 1 medical group, each named with a free account.

See all 6 affiliations for Dr. Coskun

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Sarah Elizabeth Stone Coskun's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Coskun practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Sharp Chula Vista Medical CenterAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Sarah Elizabeth Stone Coskun is one of 16,751 internists in California

Internal medicine is Dr. Coskun's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Coskun is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Coskun's licenses on file in 2 states: California and Connecticut.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A81233 · 2002 to 2026 · taxonomy 207R00000X
  • Connecticut license2006 to 2007

Clinical focus

Dmand AI lists acute diabetes, congestive heart failure, gastrointestinal inflammation, gastrointestinal obstruction, heart attack, kidney failure, mini-stroke (TIA) and non-surgical back problems among the conditions Dr. Coskun treats.

Internists near Dr. Coskun

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. Sarah Elizabeth Stone Coskun billed Medicare for 459 services in 2024

CMS data shows 459 Medicare services from Dr. Coskun across 5 procedure codes in 2024, for 177 Medicare patients. Medicare paid $35,255 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024459
Medicare patients177
Paid by Medicare$35,255
Procedure codes5

Dr. Coskun's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4132024: 45911%

Dr. Coskun compared with the California median for internists, 2024

  • Dr. Coskun
  • California median
Medicare services
459vs 36127% above
Medicare patients
177vs 15117% above
Part D claims
13vs 42197% below

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

Dr. Coskun'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 Dr. Coskun

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

Dr. Sarah Elizabeth Stone Coskun treated 177 Medicare patients in 2024, average age 77

CMS counts 177 Medicare patients who saw Dr. Coskun in 2024. The largest group is 75 to 84, with 60 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 3.01, 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. Coskun's median patient age at 76, with 54% women.

Medicare patients, 2024177
Average age77
Average risk score3.01
Also on Medicaid42%

Dr. Coskun's Medicare patients by age, 2024

Dr. Coskun's Medicare patients by sex, 2024

  • Women10358%
  • Men7442%

Chronic conditions among Dr. Coskun's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis55%
  4. Ischemic heart disease54%
  5. Diabetes53%
  6. Chronic kidney disease49%
  7. Heart failure49%
  8. Mood disorders40%

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

Dr. Coskun's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 76

Patient panel by sex, all payers

  • Women54%
  • Men45%

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

Dr. Sarah Elizabeth Stone Coskun wrote 154 Medicare Part D claims in 2024

In 2024, Dr. Coskun wrote 154 Medicare Part D claims for 86 patients. 92% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $144 in total drug cost. In 2023, CMS named 12 claims across 1 drug.

Part D claims, 2024154
Drugs named by CMS1
Total drug cost$144
Part D patients86

Dr. Coskun's Part D claims by kind of drug, 2024

  • Generic142 claims92%
  • Brand-name12 claims8%

Dr. Coskun'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. Coskun's Part D claims, 2024

  • Opioids7%11 of 154 claims
  • Antibiotics24%37 of 154 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: 122024: 138%

Drugs named by CMS: 1 in 2024, 1 in 2023.

See all prescribing by Dr. Coskun

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. Sarah Elizabeth Stone Coskun scored 89 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Coskun for performance year 2024, reported as part of a group. Dr. Coskun accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Coskun's MIPS scores, performance year 2024

  • 89of 100Final score
  • 81of 100Quality
  • 99of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 82of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Sarah Elizabeth Stone Coskun received $125 in industry payments in 2023

CMS Open Payments shows 1 general payment to Dr. Coskun from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $125.

Companies that paid Dr. Coskun the most, 2023 to 2023

Share is of all general payments to this clinician.

See all payments to Dr. Coskun

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

Dr. Sarah Elizabeth Stone Coskun graduated from The Warren Alpert Medical School of Brown University

Dr. Coskun graduated from The Warren Alpert Medical School of Brown University in 2001.

  1. Medical schoolThe Warren Alpert Medical School of Brown University
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Sarah Elizabeth Stone Coskun accepts plans from 8 insurance carriers

Dr. Coskun is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.

  • Elevance
  • Blue Cross Blue Shield of Michigan
  • Excellus BlueCross BlueShield
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare

Plan types Dr. Coskun accepts, by number of carriers

  1. Medicare5
  2. PPO5
  3. POS4
  4. EPO3
  5. HMO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Sarah Elizabeth Stone Coskun'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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 Dr. Sarah Elizabeth Stone Coskun

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. Sarah Elizabeth Stone Coskun's NPI number?

Dr. Sarah Elizabeth Stone Coskun's NPI number is 1104878545. It was assigned on May 16, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Sarah Elizabeth Stone Coskun?

Dr. Sarah Elizabeth Stone Coskun is an internist in Chula Vista, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Sarah Elizabeth Stone Coskun practice?

Dr. Coskun practices at 751 Medical Center Court, Chula Vista, CA 91911. Dr. Coskun's primary practice is Sharp Chula Vista Medical Center in Chula Vista, California, part of Sharp HealthCare. Dmand AI also links Dr. Coskun to 2 group practices and clinics and 1 medical group.

What is Dr. Sarah Elizabeth Stone Coskun's office phone number?

The practice phone on file for Dr. Coskun is (619) 502-5800.

What is Dr. Sarah Elizabeth Stone Coskun's medical license number?

Dr. Coskun holds California license A81233, one of the licenses on file in 2 states.

Which states has Dr. Sarah Elizabeth Stone Coskun been licensed in?

Dmand AI has state licenses on file for Dr. Coskun in California (2002 to 2026) and Connecticut (2006 to 2007).

Which hospitals is Dr. Sarah Elizabeth Stone Coskun affiliated with?

Dr. Coskun practices at Sharp Chula Vista Medical Center in Chula Vista, California. Dr. Coskun is also affiliated with Sharp Memorial Hospital.

What medical group is Dr. Sarah Elizabeth Stone Coskun part of?

Dr. Coskun is linked to Emergency and Acute Care Medical Corporation. Dmand AI links Dr. Coskun to 1 more medical group.

Does Dr. Sarah Elizabeth Stone Coskun accept Medicare?

Yes. CMS data shows Dr. Coskun billed Medicare for 459 services in 2024, and Dr. Coskun accepts Medicare assignment.

What is Dr. Sarah Elizabeth Stone Coskun's MIPS score?

Dr. Coskun's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.

Show 8 more questionsShow fewer questions

How many Medicare patients does Dr. Sarah Elizabeth Stone Coskun see?

CMS counts 177 Medicare patients who saw Dr. Coskun in 2024, with an average age of 77.

Is Dr. Sarah Elizabeth Stone Coskun board certified?

Yes. Dr. Coskun is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Sarah Elizabeth Stone Coskun bill to Medicare?

In 2024, Dr. Coskun's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).

Where did Dr. Sarah Elizabeth Stone Coskun go to medical school?

Dr. Coskun graduated from The Warren Alpert Medical School of Brown University in 2001.

What drugs does Dr. Sarah Elizabeth Stone Coskun prescribe most?

In 2024 Medicare Part D data, Dr. Coskun's most prescribed drugs by claims were Atorvastatin Calcium.

Has Dr. Sarah Elizabeth Stone Coskun received payments from drug or device companies?

CMS Open Payments shows $125 in general payments to Dr. Coskun from 1 company from 2023 to 2023. The largest total came from AstraZeneca Pharmaceuticals LP.

How long has Dr. Sarah Elizabeth Stone Coskun been practicing?

Dr. Coskun graduated from medical school in 2001, 25 years ago.

What insurance does Dr. Sarah Elizabeth Stone Coskun accept?

Dr. Coskun is in network with 8 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Excellus BlueCross BlueShield. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.

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