Dr. Deardre L. Chao, MD
- Medicare services, 2024
- 252
- Medicare patients, 2024
- 225
- Part D claims, 2024
- 401
- Hospital affiliations
- 1
- Medical groups
- 4
- Practice address
- 820 E Mountain View Street, Barstow, CA 92311
- Practice phone
- Call (760) 256-1761
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chao's professional email, personal email and mobile number
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Dr. Deardre L. Chao is an emergency medicine physician in Barstow, California
Dr. Chao practices at Barstow Community Hospital in Barstow, California, part of Health Side Partners.
Dr. Chao's NPI, 1770696395, was assigned on August 16, 2006. Dr. Chao graduated from George Washington University School of Medicine in 1990. Dr. Chao holds Louisiana license 11290R.
- NPI
- 1770696395NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810983889
- NPI enumeration date
- August 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (760) 256-1761
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Deardre L. Chao practices at Barstow Community Hospital in Barstow, California
Dr. Chao's primary practice is Barstow Community Hospital, at 820 E Mountain View Street, Barstow, CA 92311 in San Bernardino County. The practice phone is (760) 256-1761.
- Barstow Community Hospital820 E Mountain View Street, Barstow, CA 92311 · San Bernardino CountyPhone(760) 256-1761
Source: Dmand AI Affiliation Data
Dr. Deardre L. Chao is affiliated with 2 sites of care and 4 medical groups
Dr. Chao's primary practice is Barstow Community Hospital in Barstow, California, part of Health Side Partners. The medical group on file is Seva Medical Group. Dmand AI also links Dr. Chao to 3 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Deardre L. Chao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chao practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barstow Community Hospital | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Deardre L. Chao is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Chao's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chao is licensed in Louisiana.
Specialties and state licenses
- Emergency medicine, LouisianaPrimary
Emergency medicine physicians near Dr. Chao
Counts of emergency medicine physicians 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. Deardre L. Chao billed Medicare for 252 services in 2024
CMS data shows 252 Medicare services from Dr. Chao across 4 procedure codes in 2024, for 225 Medicare patients. Medicare paid $32,600 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3312024: 25224%
Dr. Chao compared with the California median for emergency medicine physicians, 2024
- Dr. Chao
- California median
- Medicare services
- 252vs 265Close to median
- Medicare patients
- 225vs 2437% below
- Part D claims
- 145vs 622.3 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Chao'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Deardre L. Chao treated 225 Medicare patients in 2024, average age 71
CMS counts 225 Medicare patients who saw Dr. Chao in 2024. The largest group is 65 to 74, with 94 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 52% are also on Medicaid. Their average risk score is 2.02, 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. Chao's median patient age at 38, with 56% women.
Dr. Chao's Medicare patients by age, 2024
Dr. Chao's Medicare patients by sex, 2024
- Women11049%
- Men11551%
Chronic conditions among Dr. Chao's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Diabetes60%
- Ischemic heart disease50%
- Heart failure47%
- Arthritis46%
- Chronic kidney disease46%
- COPD37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 38
Patient panel by sex, all payers
- Women56%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Deardre L. Chao wrote 401 Medicare Part D claims in 2024
In 2024, Dr. Chao wrote 401 Medicare Part D claims for 186 patients. 90% of them were for generic drugs. CMS names the drug for 145 of them, across 8 drugs with 11 or more claims each, at $952 in total drug cost. In 2023, CMS named 154 claims across 8 drugs.
Dr. Chao's Part D claims by kind of drug, 2024
- Generic359 claims90%
- Brand-name and other42 claims10%
Dr. Chao'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. Chao's Part D claims, 2024
- Antibiotics21%85 of 401 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: 1542024: 1456%
Drugs named by CMS: 8 in 2024, 8 in 2023.
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 Dr. Deardre L. Chao takes part in Medicare
Dr. Chao 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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Dr. Deardre L. Chao graduated from George Washington University School of Medicine
Dr. Chao graduated from George Washington University School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Deardre L. Chao'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (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. Deardre L. Chao
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. Deardre L. Chao's NPI number?
Dr. Deardre L. Chao's NPI number is 1770696395. It was assigned on August 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Deardre L. Chao?
Dr. Deardre L. Chao is an emergency medicine physician in Barstow, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Deardre L. Chao practice?
Dr. Chao practices at 820 E Mountain View Street, Barstow, CA 92311. Dr. Chao's primary practice is Barstow Community Hospital in Barstow, California, part of Health Side Partners. Dmand AI also links Dr. Chao to 3 medical groups and 1 group practice or clinic.
What is Dr. Deardre L. Chao's office phone number?
The practice phone on file for Dr. Chao is (760) 256-1761.
What is Dr. Deardre L. Chao's medical license number?
Dr. Chao holds Louisiana license 11290R.
Which hospitals is Dr. Deardre L. Chao affiliated with?
Dr. Chao practices at Barstow Community Hospital in Barstow, California.
What medical group is Dr. Deardre L. Chao part of?
Dr. Chao is linked to Seva Medical Group. Dmand AI links Dr. Chao to 3 more medical groups.
Does Dr. Deardre L. Chao accept Medicare?
Yes. CMS data shows Dr. Chao billed Medicare for 252 services in 2024, and Dr. Chao accepts Medicare assignment.
How many Medicare patients does Dr. Deardre L. Chao see?
CMS counts 225 Medicare patients who saw Dr. Chao in 2024, with an average age of 71.
What services does Dr. Deardre L. Chao bill to Medicare?
In 2024, Dr. Chao's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and critical care (99291).
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Where did Dr. Deardre L. Chao go to medical school?
Dr. Chao graduated from George Washington University School of Medicine in 1990.
What drugs does Dr. Deardre L. Chao prescribe most?
In 2024 Medicare Part D data, Dr. Chao's most prescribed drugs by claims were Prednisone, Doxycycline Hyclate and Levofloxacin.
How long has Dr. Deardre L. Chao been practicing?
Dr. Chao graduated from medical school in 1990, 36 years ago.
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