Dr. William Weiting Tarng, MD

  • Torrance, CA
  • Internist
NPI1376545723
Medicare services, 2024
2,194
Medicare patients, 2024
191
Part D claims, 2024
1,723
Industry payments
$8,840
Affiliated sites
2
Practice address
1727 Crenshaw Blvd, Torrance, CA 90501
Practice phone
Call (310) 325-1970
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Lomita Post Acute Care Center

Torrance, California

See all 5 affiliations

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Dr. William Weiting Tarng is an internist in Torrance, California

Dr. Tarng practices at Lomita Post Acute Care Center in Torrance, California.

Dr. Tarng's NPI, 1376545723, was assigned on August 15, 2005. Dr. Tarng graduated from St. George's University School of Medicine in 1998. Dr. Tarng holds California license A89784.

NPI and contact details
NPI enumeration date
August 15, 2005
NPI status
Active
Practice phone
(310) 325-1970
Professional email
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Personal email
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Mobile number
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Sex
Male
Medical school graduation
1998

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

Dr. William Weiting Tarng practices at Lomita Post Acute Care Center in Torrance, California

Dr. Tarng's primary practice is Lomita Post Acute Care Center, at 1727 Crenshaw Blvd, Torrance, CA 90501 in Los Angeles County. The practice phone is (310) 325-1970.

  • Lomita Post Acute Care Center
    1727 Crenshaw Blvd, Torrance, CA 90501 · Los Angeles CountyPhone(310) 325-1970

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

Dr. William Weiting Tarng is affiliated with 3 sites of care and 2 medical groups

Dr. Tarng's primary practice is Lomita Post Acute Care Center in Torrance, California. The medical group on file is Torrance Memorial Physician Network. Dmand AI also links Dr. Tarng to 2 more group practices and clinics and 1 medical group, each named with a free account.

See all 5 affiliations for Dr. Tarng

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

Dmand AI tracks the EHR system at Dr. William Weiting Tarng's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tarng practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Lomita Post Acute Care CenterAvailable 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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Dr. William Weiting Tarng is one of 16,751 internists in California

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

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A89784 · 2005 to 2027 · taxonomy 207R00000X
  • Pennsylvania license2001 to 2006

Clinical focus

Dmand AI lists arthritis, atrial fibrillation and flutter, chronic anemia, chronic diabetes, chronic hypertension, fibromyalgia and chronic pain, heart failure and insomnia among the conditions Dr. Tarng treats.

Internists near Dr. Tarng

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. William Weiting Tarng billed Medicare for 2,194 services in 2024

CMS data shows 2,194 Medicare services from Dr. Tarng across 4 procedure codes in 2024, for 191 Medicare patients. Medicare paid $238,486 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20242,194
Medicare patients191
Paid by Medicare$238,486
Procedure codes4

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

  • 2023
  • 2024
Office and hospital visits
2023: 1,8532024: 2,19418%

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

  • Dr. Tarng
  • California median
Medicare services
2,194vs 3616.1 times
Medicare patients
191vs 15126% above
Part D claims
1,268vs 4213.0 times

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

Dr. Tarng'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. Tarng

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

Dr. William Weiting Tarng treated 191 Medicare patients in 2024, average age 83

CMS counts 191 Medicare patients who saw Dr. Tarng in 2024. The largest group is 85 and over, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.03, 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. Tarng's median patient age at 82, with 67% women.

Medicare patients, 2024191
Average age83
Average risk score2.03
Also on Medicaid18%

Dr. Tarng's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Tarng's Medicare patients by sex, 2024

  • Women11761%
  • Men7439%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis60%
  4. Chronic kidney disease49%
  5. Mood disorders46%
  6. Heart failure43%
  7. Atrial fibrillation42%
  8. Depression42%

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

Dr. Tarng's patients across all payers

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

Patient panel by age, all payers

Median age 82

Patient panel by sex, all payers

  • Women67%
  • Men31%

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

Dr. William Weiting Tarng wrote 1,723 Medicare Part D claims in 2024

In 2024, Dr. Tarng wrote 1,723 Medicare Part D claims for 175 patients. 86% of them were for generic drugs. CMS names the drug for 1,268 of them, across 48 drugs with 11 or more claims each, at $69,401 in total drug cost. In 2023, CMS named 780 claims across 32 drugs.

Part D claims, 20241,723
Drugs named by CMS48
Total drug cost$69,401
Part D patients175

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

  • Generic1,490 claims86%
  • Brand-name and other233 claims14%

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

  • Opioids7%115 of 1,723 claims
  • Antibiotics3%49 of 1,723 claims
  • Antipsychotics, patients 65 and over4%64 of 1,723 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: 7802024: 1,26863%

Drugs named by CMS: 48 in 2024, 32 in 2023.

See all prescribing by Dr. Tarng

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

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Dr. William Weiting Tarng received $8,840 in industry payments from 2016 to 2025

CMS Open Payments shows 459 general payments to Dr. Tarng from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,736.

General payments to Dr. Tarng by program year, 2016 to 2025

Companies that paid Dr. Tarng the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Tarng

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

Dr. William Weiting Tarng graduated from St. George's University School of Medicine

Dr. Tarng graduated from St. George's University School of Medicine in 1998. Dr. Tarng is a member of ACP and SHM.

  1. Medical schoolSt. George's University School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. William Weiting Tarng accepts plans from 12 insurance carriers

Dr. Tarng is in network with 12 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +4 more carriersWith a free account

Plan types Dr. Tarng accepts, by number of carriers

  1. PPO8
  2. HMO6
  3. Medicare5
  4. EPO3
  5. POS3

Source: Dmand AI Insurance Network Data

Sources for Dr. William Weiting Tarng'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 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)
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. William Weiting Tarng

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. William Weiting Tarng's NPI number?

Dr. William Weiting Tarng's NPI number is 1376545723. It was assigned on August 15, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. William Weiting Tarng?

Dr. William Weiting Tarng is an internist in Torrance, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. William Weiting Tarng practice?

Dr. Tarng practices at 1727 Crenshaw Blvd, Torrance, CA 90501. Dr. Tarng's primary practice is Lomita Post Acute Care Center in Torrance, California. Dmand AI also links Dr. Tarng to 2 group practices and clinics and 1 medical group.

What is Dr. William Weiting Tarng's office phone number?

The practice phone on file for Dr. Tarng is (310) 325-1970.

What is Dr. William Weiting Tarng's medical license number?

Dr. Tarng holds California license A89784, one of the licenses on file in 2 states.

Which states has Dr. William Weiting Tarng been licensed in?

Dmand AI has state licenses on file for Dr. Tarng in California (2005 to 2027) and Pennsylvania (2001 to 2006).

What medical group is Dr. William Weiting Tarng part of?

Dr. Tarng is linked to Torrance Memorial Physician Network. Dmand AI links Dr. Tarng to 1 more medical group.

Does Dr. William Weiting Tarng accept Medicare?

Yes. CMS data shows Dr. Tarng billed Medicare for 2,194 services in 2024.

How many Medicare patients does Dr. William Weiting Tarng see?

CMS counts 191 Medicare patients who saw Dr. Tarng in 2024, with an average age of 83.

Is Dr. William Weiting Tarng board certified?

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

Show 6 more questionsShow fewer questions

What services does Dr. William Weiting Tarng bill to Medicare?

In 2024, Dr. Tarng's most billed Medicare services were nursing facility care (99309), nursing facility care (99310) and nursing facility care (99306).

Where did Dr. William Weiting Tarng go to medical school?

Dr. Tarng graduated from St. George's University School of Medicine in 1998.

What drugs does Dr. William Weiting Tarng prescribe most?

In 2024 Medicare Part D data, Dr. Tarng's most prescribed drugs by claims were Furosemide, Omeprazole and Warfarin Sodium.

Has Dr. William Weiting Tarng received payments from drug or device companies?

CMS Open Payments shows $8,840 in general payments to Dr. Tarng from 30 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.

How long has Dr. William Weiting Tarng been practicing?

Dr. Tarng graduated from medical school in 1998, 28 years ago.

What insurance does Dr. William Weiting Tarng accept?

Dr. Tarng is in network with 12 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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