J Trauma Acute Care Surg
Blood Coagulation FactorsBrain Injuries, TraumaticErythrocyte Transfusion
Dr. Ashton B. Christian, MD
NPI1699207704PAC ID1557695905
- Medicare services, 2024
- 39
- Medicare patients, 2024
- 33
- Part D claims, 2024
- 15
- Publications
- 10
- MIPS score, 2024
- 87
- Practice address
- 27799 Medical Center Rd, Mission Viejo, CA 92691
- Practice phone
- Call (949) 364-1007
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Saddleback Valley Surgical-Medical Group
Mission Viejo, California
Find Dr. Christian'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. Ashton B. Christian is a general surgeon in Mission Viejo, California
Dr. Christian practices at Saddleback Valley Surgical-Medical Group in Mission Viejo, California.
Dr. Christian's NPI, 1699207704, was assigned on March 29, 2017. Dr. Christian graduated from UC Irvine School of Medicine in 2016. Dr. Christian holds California license A157097.
NPI and contact details
- NPI
- 1699207704NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557695905
- NPI enumeration date
- March 29, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (949) 364-1007
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ashton B. Christian practices at Saddleback Valley Surgical-Medical Group in Mission Viejo, California
Dr. Christian's primary practice is Saddleback Valley Surgical-Medical Group, at 27799 Medical Center Rd, Mission Viejo, CA 92691 in Orange County. The practice phone is (949) 364-1007.
- Saddleback Valley Surgical-Medical Group27799 Medical Center Rd, Mission Viejo, CA 92691 · Orange CountyPhone(949) 364-1007
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ashton B. Christian is affiliated with 2 sites of care and 1 medical group
Dr. Christian's primary practice is Saddleback Valley Surgical-Medical Group in Mission Viejo, California. Dr. Christian is also affiliated with Providence Mission Hospital. The medical group on file is OC Surgeons (South Orange County Surgical).
Saddleback Valley Surgical-Medical GroupPrimary
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. Ashton B. Christian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Christian practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saddleback Valley Surgical-Medical Group | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Christian practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ashton B. Christian is one of 2,926 general surgeons in California
Surgery is Dr. Christian's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Christian is board certified in surgery by the American Board of Surgery. Dr. Christian is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Christian
Counts of general surgeons 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. Ashton B. Christian billed Medicare for 39 services in 2024
CMS data shows 39 Medicare services from Dr. Christian across 2 procedure codes in 2024, for 33 Medicare patients. Medicare paid $4,312 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202439
Medicare patients33
Paid by Medicare$4,312
Procedure codes2
Dr. Christian compared with the California median for general surgeons, 2024
- Dr. Christian
- California median
- Medicare services
- 39vs 16677% below
- Medicare patients
- 33vs 12173% below
- Part D claims
- 28vs 3418% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Christian'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. Christian?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Christian and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ashton B. Christian treated 33 Medicare patients in 2024, average age 73
CMS counts 33 Medicare patients who saw Dr. Christian in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.81, 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. Christian's median patient age at 62, with 42% women.
Medicare patients, 202433
Average age73
Average risk score1.81
Dr. Christian's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Christian's Medicare patients by sex, 2024
- Women1339%
- Men2061%
Chronic conditions among Dr. Christian's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation39%
- Arthritis36%
- Cancer36%
- Chronic kidney disease36%
- Ischemic heart disease36%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Christian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ashton B. Christian wrote 15 Medicare Part D claims in 2024
In 2024, Dr. Christian wrote 15 Medicare Part D claims for 11 patients. 100% of them were for generic drugs. They cover 1 drug, with $76 in total drug cost. In 2022, CMS named 41 claims across 3 drugs.
Part D claims, 202415
Drugs named by CMS1
Total drug cost$76
Part D patients11
Dr. Christian's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 412023: 2832%
Drugs named by CMS: 1 in 2023, 3 in 2022.
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. Ashton B. Christian scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Christian for performance year 2024, reported as part of a group. Dr. Christian accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 21 procedures of hernia repair (minimally invasive) by Dr. Christian, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Christian's MIPS scores, performance year 2024
- 87of 100Final score
- 62.7of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 86of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Christian ranks in Medicare procedure volume
- Hernia repair (minimally invasive)
- 89th percentile21 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Find general surgeons like Dr. Christian by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Ashton B. Christian has 10 publications on record
Dmand AI links 10 papers to Dr. Christian, published from 2020 to 2024. 2020 was the busiest year, with 6. The most frequent topics are Length of Stay, Rib Fractures and Brain Injuries, Traumatic. Dr. Christian has published most often in Eur J Trauma Emerg Surg. Dr. Christian's most frequent co-authors are Areg Grigorian, MD, Jeffry T. Nahmias, MD and Sebastian Diminik Schubl, MD.
Papers10
Years published2020 to 2024
Dr. Christian's papers by year, 2020 to 2024
Topics Dr. Christian writes about most
- Length of Stay
- Rib Fractures
- Brain Injuries, Traumatic
- Fracture Fixation, Internal
- Injury Severity Score
- Thoracic Injuries
Dr. Christian's most frequent co-authors
- Areg Grigorian, MD7 shared papers
- Jeffry T. Nahmias, MD7 shared papers
- Sebastian Diminik Schubl, MD5 shared papers
Recent publications by Dr. Christian
Body Mass IndexHernia, InguinalHerniorrhaphy
Eur J Trauma Emerg Surg
Fracture FixationInjury Severity ScoreLength of Stay
Eur J Trauma Emerg Surg
Fracture Fixation, InternalFractures, BoneLength of Stay
See who Dr. Christian researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Christian works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ashton B. Christian received $10,945 in industry payments from 2024 to 2025
CMS Open Payments shows 61 general payments to Dr. Christian from 6 drug and device companies from 2024 to 2025. Education make up the largest share, 55% of the total. Intuitive Surgical, Inc. paid the most, $10,461.
General payments to Dr. Christian by program year, 2024 to 2025
General payments to Dr. Christian by kind, 2024 to 2025
$10.9Kin total
- Education$6,00055%
- Travel and lodging$3,00927%
- Food and beverage$1,93618%
Companies that paid Dr. Christian the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ashton B. Christian has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Christian, most recently 2024 Surgery Chief of the Year in 2024. Dr. Christian serves on Robotic Steering Committee - Mission Hospital.
Awards and honors for Dr. Christian
- 2024
- 2024 Surgery Chief of the Year
- John E Connolly Surgical Society
Dr. Christian's committees and leadership roles
- Robotic Steering Committee - Mission HospitalCo-chair
- 2025 to present
Source: Dmand AI Professional Profile Data
Dr. Ashton B. Christian graduated from UC Irvine School of Medicine
Dr. Christian graduated from UC Irvine School of Medicine in 2016. Dr. Christian is a member of ACS and AMA.
- Medical school
- Board certified in surgery
- Board certified in advanced surgical skills for exposure in trauma (asset)
- Board certified in advanced trauma life support (atls)
- Board certified in advanced cardiac life support (acls)
- Board certified in basic life support (bls)
- Board certified in fundamental of laparoscopic surgery (fls)
- Board certified in fundamentals of endoscopic surgery (fes)
Source: Dmand AI Professional Profile Data
Dr. Ashton B. Christian accepts plans from 8 insurance carriers
Dr. Christian is in network with 8 carriers, including Aetna, United Healthcare and Aspirus Health Plan. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
- Humana
Plan types Dr. Christian accepts, by number of carriers
- PPO4
- HMO3
- Medicare3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Ashton B. Christian'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Ashton B. Christian
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. Ashton B. Christian's NPI number?
Dr. Ashton B. Christian's NPI number is 1699207704. It was assigned on March 29, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Ashton B. Christian?
Dr. Ashton B. Christian is a general surgeon in Mission Viejo, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ashton B. Christian practice?
Dr. Christian practices at 27799 Medical Center Rd, Mission Viejo, CA 92691. Dr. Christian's primary practice is Saddleback Valley Surgical-Medical Group in Mission Viejo, California.
What is Dr. Ashton B. Christian's office phone number?
The practice phone on file for Dr. Christian is (949) 364-1007.
What is Dr. Ashton B. Christian's medical license number?
Dr. Christian holds California license A157097.
Which hospitals is Dr. Ashton B. Christian affiliated with?
Dr. Christian is affiliated with Providence Mission Hospital.
What medical group is Dr. Ashton B. Christian part of?
Dr. Christian is linked to OC Surgeons (South Orange County Surgical).
Does Dr. Ashton B. Christian accept Medicare?
Yes. CMS data shows Dr. Christian billed Medicare for 39 services in 2024, and Dr. Christian accepts Medicare assignment.
What is Dr. Ashton B. Christian's MIPS score?
Dr. Christian's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ashton B. Christian see?
CMS counts 33 Medicare patients who saw Dr. Christian in 2024, with an average age of 73.
Show 9 more questionsShow fewer questions
Is Dr. Ashton B. Christian board certified?
Yes. Dr. Christian is board certified in surgery by the American Board of Surgery.
What services does Dr. Ashton B. Christian bill to Medicare?
In 2024, Dr. Christian's most billed Medicare services were hospital inpatient care (99233) and hospital inpatient care (99223).
Where did Dr. Ashton B. Christian go to medical school?
Dr. Christian graduated from UC Irvine School of Medicine in 2016.
What drugs does Dr. Ashton B. Christian prescribe most?
In 2023 Medicare Part D data, Dr. Christian's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Ashton B. Christian received payments from drug or device companies?
CMS Open Payments shows $10,945 in general payments to Dr. Christian from 6 companies from 2024 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Ashton B. Christian been practicing?
Dr. Christian graduated from medical school in 2016, 10 years ago.
Does Dr. Ashton B. Christian do research?
Dmand AI links 10 publications to Dr. Christian, published from 2020 to 2024.
Who does Dr. Ashton B. Christian publish with?
Dr. Christian's most frequent co-authors are Areg Grigorian, MD (7 shared papers), Jeffry T. Nahmias, MD (7 shared papers) and Sebastian Diminik Schubl, MD (5 shared papers).
What insurance does Dr. Ashton B. Christian accept?
Dr. Christian is in network with 8 carriers, including Aetna, United Healthcare and Aspirus Health Plan. PPO plans come from the most carriers, 4. Check the plan with the practice before a visit.
Selling to surgery practices?
See general surgeons in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card