Dr. Halline Uzell Overby, MD
- Medicare services, 2024
- 1,962
- Medicare patients, 2024
- 187
- Part D claims, 2024
- 514
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 12021 S Wilmington Ave, Los Angeles, CA 90059
- Practice phone
- Call (310) 668-5201
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martin Luther King, Jr Outpatient Center
Los Angeles, California
Find Dr. Overby's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Halline Uzell Overby is a hematologist and oncologist in Los Angeles, California
Dr. Overby practices at Martin Luther King, Jr Outpatient Center in Los Angeles, California.
Dr. Overby's NPI, 1912062001, was assigned on December 27, 2006. Dr. Overby graduated from Howard University College Of Medicine in 1975. Dr. Overby holds California license G32767.
- NPI
- 1912062001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4981868643
- NPI enumeration date
- December 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 668-5201
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Halline Uzell Overby practices at Martin Luther King, Jr Outpatient Center in Los Angeles, California
Dr. Overby's primary practice is Martin Luther King, Jr Outpatient Center, at 12021 S Wilmington Ave, Los Angeles, CA 90059 in Los Angeles County. The practice phone is (310) 668-5201.
- Martin Luther King, Jr Outpatient Center12021 S Wilmington Ave, Los Angeles, CA 90059 · Los Angeles CountyPhone(310) 668-5201
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Halline Uzell Overby is affiliated with 4 sites of care and 1 medical group
Dr. Overby's primary practice is Martin Luther King, Jr Outpatient Center in Los Angeles, California. Dr. Overby is also affiliated with Los Angeles General Medical Center. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links Dr. Overby to 1 more hospital and 1 hospice, each named with a free account.
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 Dr. Halline Uzell Overby's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Overby practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martin Luther King, Jr Outpatient Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Halline Uzell Overby is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Overby's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Overby is board certified in internal medicine by the American Board of Internal Medicine. Dr. Overby is licensed in California.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists atrial fibrillation and flutter, bronchitis, bursitis, chronic anemia, chronic embolism thrombosis, chronic kidney disease, deep vein thrombosis (DVT) and joint pain among the conditions Dr. Overby treats.
Hematologists and oncologists near Dr. Overby
Counts of hematologists and oncologists 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. Halline Uzell Overby billed Medicare for 1,962 services in 2024
CMS data shows 1,962 Medicare services from Dr. Overby across 22 procedure codes in 2024, for 187 Medicare patients. Medicare paid $31,137 for them. Every service was in an office.
Dr. Overby's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 9512024: 63633%
- Lab and pathology
- 2023: 6372024: 48324%
- Office and hospital visits
- 2023: 4882024: 37324%
- Surgery
- 2023: 3962024: 30423%
- Tests and treatments
- 2023: 2862024: 16642%
Dr. Overby compared with the California median for hematologists and oncologists, 2024
- Dr. Overby
- California median
- Medicare services
- 1,962vs 9322.1 times
- Medicare patients
- 187vs 22517% below
- Part D claims
- 368vs 3947% below
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Overby'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.
Need commercial claims for Dr. Overby?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Overby and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Halline Uzell Overby treated 187 Medicare patients in 2024, average age 69
CMS counts 187 Medicare patients who saw Dr. Overby in 2024. The largest group is 65 to 74, with 112 patients. 75% of them have high blood pressure, and 66% have high cholesterol. Their average risk score is 1.82, 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. Overby's median patient age at 63, with 50% women.
Dr. Overby's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Overby's Medicare patients by sex, 2024
- Women12265%
- Men6535%
Chronic conditions among Dr. Overby's Medicare patients, 2024
- High blood pressure75%
- High cholesterol66%
- Diabetes55%
- Cancer43%
- Chronic kidney disease38%
- Arthritis37%
- Heart failure25%
- Ischemic heart disease18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Overby's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Halline Uzell Overby wrote 514 Medicare Part D claims in 2024
In 2024, Dr. Overby wrote 514 Medicare Part D claims for 94 patients. 74% of them were for generic drugs. CMS names the drug for 368 of them, across 14 drugs with 11 or more claims each, at $828,112 in total drug cost. In 2023, CMS named 411 claims across 13 drugs.
Dr. Overby's Part D claims by kind of drug, 2024
- Generic380 claims74%
- Brand-name134 claims26%
Dr. Overby'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. Overby's Part D claims, 2024
- Opioids9%47 of 514 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: 4112024: 36810%
Drugs named by CMS: 14 in 2024, 13 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
Dr. Halline Uzell Overby offers telehealth to Medicare patients
Dr. Overby accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Overby as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Halline Uzell Overby has 1 publication on record
Dmand AI links 1 paper to Dr. Overby in 2024. Dr. Overby's most frequent co-authors are Marian Maxine Varda, DO and James Yeh.
Dr. Overby's most frequent co-authors
Recent publications by Dr. Overby
See who Dr. Overby researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Overby works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Halline Uzell Overby received $3,861 in industry payments from 2016 to 2025
CMS Open Payments shows 169 general payments to Dr. Overby from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Genentech, Inc. paid the most, $738.
General payments to Dr. Overby by program year, 2016 to 2025
General payments to Dr. Overby by kind, 2016 to 2025
- Food and beverage$3,65995%
- Education$2025%
Companies that paid Dr. Overby the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Halline Uzell Overby graduated from Howard University College Of Medicine
Dr. Overby graduated from Howard University College Of Medicine in 1975.
- Medical school
- Board certified in internal medicine
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Halline Uzell Overby accepts plans from 8 insurance carriers
Dr. Overby is in network with 8 carriers, including United Healthcare, LA Care and Alliant Health Plans. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- United Healthcare
- LA Care
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- EMI Health
- HCSC
Plan types Dr. Overby accepts, by number of carriers
- HMO4
- PPO3
- EPO2
- Medicare2
- Medicaid1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Halline Uzell Overby'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Halline Uzell Overby
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. Halline Uzell Overby's NPI number?
Dr. Halline Uzell Overby's NPI number is 1912062001. It was assigned on December 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Halline Uzell Overby?
Dr. Halline Uzell Overby is a hematologist and oncologist in Los Angeles, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Halline Uzell Overby practice?
Dr. Overby practices at 12021 S Wilmington Ave, Los Angeles, CA 90059. Dr. Overby's primary practice is Martin Luther King, Jr Outpatient Center in Los Angeles, California. Dmand AI also links Dr. Overby to 1 hospital and 1 hospice.
What is Dr. Halline Uzell Overby's office phone number?
The practice phone on file for Dr. Overby is (310) 668-5201.
What is Dr. Halline Uzell Overby's medical license number?
Dr. Overby holds California license G32767.
Which hospitals is Dr. Halline Uzell Overby affiliated with?
Dr. Overby is affiliated with Los Angeles General Medical Center. Dmand AI links Dr. Overby to 1 more hospital.
What medical group is Dr. Halline Uzell Overby part of?
Dr. Overby is linked to Harbor-UCLA Medical Center.
Does Dr. Halline Uzell Overby accept Medicare?
Yes. CMS data shows Dr. Overby billed Medicare for 1,962 services in 2024, and Dr. Overby accepts Medicare assignment.
Does Dr. Halline Uzell Overby offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Overby as offering telehealth services.
How many Medicare patients does Dr. Halline Uzell Overby see?
CMS counts 187 Medicare patients who saw Dr. Overby in 2024, with an average age of 69.
Show 9 more questionsShow fewer questions
Is Dr. Halline Uzell Overby board certified?
Yes. Dr. Overby is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Halline Uzell Overby bill to Medicare?
In 2024, Dr. Overby's most billed Medicare services were injected or infused drug (J2405), surgery: heart and blood vessels (36415) and office visit, established patient (99213).
Where did Dr. Halline Uzell Overby go to medical school?
Dr. Overby graduated from Howard University College Of Medicine in 1975.
What drugs does Dr. Halline Uzell Overby prescribe most?
In 2024 Medicare Part D data, Dr. Overby's most prescribed drugs by claims were Warfarin Sodium, Hydrocodone-Acetaminophen and Anastrozole.
Has Dr. Halline Uzell Overby received payments from drug or device companies?
CMS Open Payments shows $3,861 in general payments to Dr. Overby from 23 companies from 2016 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Halline Uzell Overby been practicing?
Dr. Overby graduated from medical school in 1975, 51 years ago.
Does Dr. Halline Uzell Overby do research?
Dmand AI links 1 publication to Dr. Overby.
Who does Dr. Halline Uzell Overby publish with?
Dr. Overby's most frequent co-authors are Marian Maxine Varda, DO (1 shared paper) and James Yeh (1 shared paper).
What insurance does Dr. Halline Uzell Overby accept?
Dr. Overby is in network with 8 carriers, including United Healthcare, LA Care and Alliant Health Plans. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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