Hosp Pract (Off Ed)
Acquired Immunodeficiency SyndromeCytarabineDiagnosis, Differential
Dr. Mark Christopher Asbill, MD
NPI1558310896
- Medicare services, 2019
- 522
- Part D claims, 2020
- 159
- Publications
- 2
- Industry payments
- $1,047
- Affiliated sites
- 1
- Practice address
- 2699 Atlantic Ave, Long Beach, CA 90806-2710
- Practice phone
- Call (562) 426-3333
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Optum
Primary care practice · Long Beach, California
Find Dr. Asbill's professional email, personal email and mobile number
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Dr. Mark Christopher Asbill is an internist in Long Beach, California
Dr. Asbill practices at Optum in Long Beach, California.
Dr. Asbill's NPI, 1558310896, was assigned on May 5, 2006. Dr. Asbill graduated from David Geffen School of Medicine at UCLA in 1980. Dr. Asbill holds California license G045153.
NPI and contact details
- NPI
- 1558310896NPI Registry (opens in a new tab)
- NPI enumeration date
- May 5, 2006
- NPI status
- Active
- Practice phone
- (562) 426-3333
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Christopher Asbill practices at Optum in Long Beach, California
Dr. Asbill's primary practice is Optum, at 2699 Atlantic Ave, Long Beach, CA 90806-2710. The practice phone is (562) 426-3333.
- Optum2699 Atlantic Ave, Long Beach, CA 90806-2710Phone(562) 426-3333
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Christopher Asbill is affiliated with 1 site of care and 1 medical group
Dr. Asbill's primary practice is Optum in Long Beach, California. The medical group on file is Optum - Downtown Los Angeles.
OptumPrimary
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mark Christopher Asbill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Asbill practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Optum | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Christopher Asbill is one of 16,751 internists in California
Internal medicine is Dr. Asbill's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Asbill is board certified in internal medicine by the American Board of Internal Medicine. Dr. Asbill is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Asbill
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. Mark Christopher Asbill billed Medicare for 522 services in 2019
CMS data shows 522 Medicare services from Dr. Asbill across 7 procedure codes in 2019. Medicare paid $28,347 for them. Every service was in an office.
Medicare services, 2019522
Paid by Medicare$28,347
Procedure codes7
Dr. Asbill's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 4852019: 27144%
- Other services
- 2018: 3502019: 14858%
- Surgery
- 2018: 3012019: 9170%
- Tests and treatments
- 2018: 1412019: 1291%
Dr. Asbill compared with the California median for internists, 2019
- Dr. Asbill
- California median
- Medicare services
- 522vs 36145% above
- Part D claims
- 159vs 42162% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Asbill's most billed Medicare procedure codes, 2019
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. Asbill?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Asbill and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Christopher Asbill's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Asbill's median patient age at 73, with 43% women.
Dr. Asbill's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Mark Christopher Asbill wrote 159 Medicare Part D claims in 2020
In 2020, Dr. Asbill wrote 159 Medicare Part D claims. They cover 9 drugs, with $2,296 in total drug cost. In 2019, CMS named 5,550 claims across 97 drugs.
Part D claims, 2020159
Drugs named by CMS9
Total drug cost$2,296
Dr. Asbill's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 5,5502020: 15997%
Drugs named by CMS: 9 in 2020, 97 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark Christopher Asbill has 2 publications on record
Dmand AI links 2 papers to Dr. Asbill. Dr. Asbill's most frequent co-author is Panos Z. Marmarelis, MD, PhD.
Papers2
Dr. Asbill's most frequent co-authors
Recent publications by Dr. Asbill
See who Dr. Asbill researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Asbill works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Christopher Asbill received $1,047 in industry payments from 2016 to 2018
CMS Open Payments shows 62 general payments to Dr. Asbill from 14 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $231.
General payments to Dr. Asbill by program year, 2016 to 2018
Companies that paid Dr. Asbill the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Christopher Asbill graduated from David Geffen School of Medicine at UCLA
Dr. Asbill graduated from David Geffen School of Medicine at UCLA in 1980.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Christopher Asbill'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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 |
| 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. Mark Christopher Asbill
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. Mark Christopher Asbill's NPI number?
Dr. Mark Christopher Asbill's NPI number is 1558310896. It was assigned on May 5, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Christopher Asbill?
Dr. Mark Christopher Asbill is an internist in Long Beach, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Christopher Asbill practice?
Dr. Asbill practices at 2699 Atlantic Ave, Long Beach, CA 90806-2710. Dr. Asbill's primary practice is Optum in Long Beach, California.
What is Dr. Mark Christopher Asbill's office phone number?
The practice phone on file for Dr. Asbill is (562) 426-3333.
What is Dr. Mark Christopher Asbill's medical license number?
Dr. Asbill holds California license G045153.
What medical group is Dr. Mark Christopher Asbill part of?
Dr. Asbill is linked to Optum - Downtown Los Angeles.
Does Dr. Mark Christopher Asbill accept Medicare?
Yes. CMS data shows Dr. Asbill billed Medicare for 522 services in 2019.
Is Dr. Mark Christopher Asbill board certified?
Yes. Dr. Asbill is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Mark Christopher Asbill bill to Medicare?
In 2019, Dr. Asbill's most billed Medicare services were office visit, established patient (99212), medicare service (G0439) and surgery: heart and blood vessels (36415).
Where did Dr. Mark Christopher Asbill go to medical school?
Dr. Asbill graduated from David Geffen School of Medicine at UCLA in 1980.
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What drugs does Dr. Mark Christopher Asbill prescribe most?
In 2020 Medicare Part D data, Dr. Asbill's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Pravastatin Sodium.
Has Dr. Mark Christopher Asbill received payments from drug or device companies?
CMS Open Payments shows $1,047 in general payments to Dr. Asbill from 14 companies from 2016 to 2018. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Mark Christopher Asbill been practicing?
Dr. Asbill graduated from medical school in 1980, 46 years ago.
Does Dr. Mark Christopher Asbill do research?
Dmand AI links 2 publications to Dr. Asbill.
Who does Dr. Mark Christopher Asbill publish with?
Dr. Asbill's most frequent co-authors are Panos Z. Marmarelis, MD, PhD (1 shared paper).
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