Darren L. Teshima

  • San Diego, CA
  • Hospitalist
NPI1659696128PAC ID6800039991
Medicare services, 2024
358
Medicare patients, 2024
101
Part D claims, 2024
264
Hospital affiliations
1
Industry payments
$12
Practice address
4077 5th Ave, San Diego, CA 92103
Practice phone
Call (619) 294-8111
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Scripps Mercy Hospital San Diego

Hospital · San Diego, California

See all 5 affiliations

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Darren L. Teshima is a hospitalist in San Diego, California

Darren Teshima practices at Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health.

Darren Teshima's NPI, 1659696128, was assigned on March 29, 2010. Darren Teshima graduated from John A. Burns School of Medicine in 2010. Darren Teshima's California license number on file is A119251.

NPI and contact details
Medicare PAC ID
6800039991
NPI enumeration date
March 29, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(619) 294-8111
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
42
Medical school graduation
2010

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

Darren L. Teshima practices at Scripps Mercy Hospital San Diego in San Diego, California

Darren Teshima's primary practice is Scripps Mercy Hospital San Diego, at 4077 5th Ave, San Diego, CA 92103 in San Diego County. The practice phone is (619) 294-8111.

Source: Dmand AI Affiliation Data

Darren L. Teshima is affiliated with 3 sites of care and 2 medical groups

Darren Teshima's primary practice is Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health. The medical group on file is Scripps Clinic Medical Group. Dmand AI also links Darren Teshima to 2 more group practices and clinics and 1 medical group, each named with a free account.

See all 5 affiliations for Darren Teshima

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

Dmand AI tracks the EHR system at Darren L. Teshima's practice

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

EHR by site
SiteEHR vendor and product
Scripps Mercy Hospital San DiegoAvailable with a free account
+2 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Darren L. Teshima is one of 3,186 hospitalists in California

Hospitalist is Darren Teshima's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Darren Teshima is board certified in internal medicine by the American Board of Internal Medicine. Darren Teshima has a license on file in California.

Specialties and state licenses

  • Hospitalist, CaliforniaPrimaryLicense A119251 · 2011 to 2025 · taxonomy 208M00000X

Clinical focus

Dmand AI lists acute diabetes, acute respiratory failure, anemia, cardiac arrhythmia, circulation problems, congestive heart failure, gastrointestinal bleeding and gastrointestinal inflammation among the conditions Darren Teshima treats.

Hospitalists near Darren Teshima

Counts of hospitalists 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

Darren L. Teshima billed Medicare for 358 services in 2024

CMS data shows 358 Medicare services from Darren Teshima across 2 procedure codes in 2024, for 101 Medicare patients. Medicare paid $34,155 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024358
Medicare patients101
Paid by Medicare$34,155
Procedure codes2

Darren Teshima's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4052024: 35812%

Darren Teshima compared with the California median for hospitalists, 2024

  • Darren Teshima
  • California median
Medicare services
358vs 43017% below
Medicare patients
101vs 20150% below
Part D claims
28vs 6959% below

Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.

Darren Teshima'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 Darren Teshima

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

Darren L. Teshima treated 101 Medicare patients in 2024, average age 80

CMS counts 101 Medicare patients who saw Darren Teshima in 2024. The largest group is 85 and over, with 38 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 26% are also on Medicaid. Their average risk score is 2.38, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Darren Teshima's median patient age at 75, with 49% women.

Medicare patients, 2024101
Average age80
Average risk score2.38
Also on Medicaid26%

Darren Teshima's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Darren Teshima's Medicare patients by sex, 2024

  • Women5050%
  • Men5150%

Chronic conditions among Darren Teshima's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Ischemic heart disease55%
  4. Mood disorders55%
  5. Arthritis50%
  6. Heart failure50%
  7. Atrial fibrillation47%
  8. Chronic kidney disease47%

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

Darren Teshima's patients across all payers

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

Patient panel by age, all payers

Median age 75

Patient panel by sex, all payers

  • Women49%
  • Men50%

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

Darren L. Teshima wrote 264 Medicare Part D claims in 2024

In 2024, Darren Teshima wrote 264 Medicare Part D claims for 105 patients. 86% of them were for generic drugs. CMS names the drug for 28 of them, across 2 drugs with 11 or more claims each, at $79 in total drug cost. In 2023, CMS named 46 claims across 4 drugs.

Part D claims, 2024264
Drugs named by CMS2
Total drug cost$79
Part D patients105

Darren Teshima's Part D claims by kind of drug, 2024

  • Generic227 claims86%
  • Brand-name and other37 claims14%

Darren Teshima'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 Darren Teshima's Part D claims, 2024

  • Opioids7%18 of 264 claims
  • Antibiotics15%39 of 264 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: 462024: 2839%

Drugs named by CMS: 2 in 2024, 4 in 2023.

See all prescribing by Darren Teshima

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 Darren L. Teshima takes part in Medicare

Darren Teshima 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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Darren L. Teshima received $12 in industry payments in 2017

CMS Open Payments shows 1 general payment to Darren Teshima from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $12.

Companies that paid Darren Teshima the most, 2017 to 2017

Share is of all general payments to this clinician.

See all payments to Darren Teshima

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

Darren L. Teshima graduated from John A. Burns School of Medicine

Darren Teshima graduated from John A. Burns School of Medicine in 2010.

  1. Medical schoolJohn A. Burns School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Darren L. Teshima accepts plans from 5 insurance carriers

Darren Teshima is in network with 5 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.

  • Aetna
  • United Healthcare
  • Blue Cross Blue Shield of Michigan
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare

Plan types Darren Teshima accepts, by number of carriers

  1. HMO3
  2. Medicare3
  3. POS3
  4. PPO3
  5. EPO2

Source: Dmand AI Insurance Network Data

Sources for Darren L. Teshima'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)
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 Darren L. Teshima

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

What is Darren L. Teshima's NPI number?

Darren L. Teshima's NPI number is 1659696128. It was assigned on March 29, 2010, and it is active in the NPI Registry.

What does Darren L. Teshima specialize in?

Darren L. Teshima is a hospitalist in San Diego, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).

Where does Darren L. Teshima practice?

Darren Teshima practices at 4077 5th Ave, San Diego, CA 92103. Darren Teshima's primary practice is Scripps Mercy Hospital San Diego in San Diego, California, part of Scripps Health. Dmand AI also links Darren Teshima to 2 group practices and clinics and 1 medical group.

What is Darren L. Teshima's office phone number?

The practice phone on file for Darren Teshima is (619) 294-8111.

What is Darren L. Teshima's medical license number?

Darren Teshima's California license number on file is A119251.

Which hospitals is Darren L. Teshima affiliated with?

Darren Teshima practices at Scripps Mercy Hospital San Diego in San Diego, California.

What medical group is Darren L. Teshima part of?

Darren Teshima is linked to Scripps Clinic Medical Group. Dmand AI links Darren Teshima to 1 more medical group.

Does Darren L. Teshima accept Medicare?

Yes. CMS data shows Darren Teshima billed Medicare for 358 services in 2024, and Darren Teshima accepts Medicare assignment.

How many Medicare patients does Darren L. Teshima see?

CMS counts 101 Medicare patients who saw Darren Teshima in 2024, with an average age of 80.

Is Darren L. Teshima board certified?

Yes. Darren Teshima is board certified in internal medicine by the American Board of Internal Medicine.

Show 6 more questionsShow fewer questions

What services does Darren L. Teshima bill to Medicare?

In 2024, Darren Teshima's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99239).

Where did Darren L. Teshima go to medical school?

Darren Teshima graduated from John A. Burns School of Medicine in 2010.

What drugs does Darren L. Teshima prescribe most?

In 2024 Medicare Part D data, Darren Teshima's most prescribed drugs by claims were Atorvastatin Calcium and Carvedilol.

Has Darren L. Teshima received payments from drug or device companies?

CMS Open Payments shows $12 in general payments to Darren Teshima from 1 company from 2017 to 2017. The largest total came from ViiV Healthcare Company.

How long has Darren L. Teshima been practicing?

Darren Teshima graduated from medical school in 2010, 16 years ago.

What insurance does Darren L. Teshima accept?

Darren Teshima is in network with 5 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.

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