Dr. Carl William Buckhorn, MD
- Medicare services, 2024
- 173
- Medicare patients, 2024
- 75
- Part D claims, 2024
- 3,541
- Hospital affiliations
- 1
- Industry payments
- $1,370
- Practice address
- 2282 N State College Blvd, Fullerton, CA 92831
- Practice phone
- Call (714) 871-7118
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Medical and Healing Arts, Inc
Fullerton, California
Find Dr. Buckhorn'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. Carl William Buckhorn is an internist in Fullerton, California
Dr. Buckhorn practices at Medical and Healing Arts, Inc in Fullerton, California.
Dr. Buckhorn's NPI, 1649264847, was assigned on September 2, 2005. Dr. Buckhorn graduated from UCSF School of Medicine in 1990. Dr. Buckhorn holds California license G73630.
- NPI
- 1649264847NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224050281
- NPI enumeration date
- September 2, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 871-7118
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Carl William Buckhorn practices at Medical and Healing Arts, Inc in Fullerton, California
Dr. Buckhorn's primary practice is Medical and Healing Arts, Inc, at 2282 N State College Blvd, Fullerton, CA 92831 in Orange County. The practice phone is (714) 871-7118.
- Medical and Healing Arts, Inc2282 N State College Blvd, Fullerton, CA 92831 · Orange CountyPhone(714) 871-7118
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Carl William Buckhorn is affiliated with 6 sites of care
Dr. Buckhorn's primary practice is Medical and Healing Arts, Inc in Fullerton, California. Dr. Buckhorn is also affiliated with Providence St. Jude Medical Center. Dmand AI also links Dr. Buckhorn to 3 more skilled nursing facilities and 1 physician office, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Carl William Buckhorn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buckhorn practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Medical and Healing Arts, Inc | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Carl William Buckhorn is one of 16,751 internists in California
Internal medicine is Dr. Buckhorn's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Buckhorn is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, acute diabetes, acute gallbladder or bile duct inflammation, adjustment disease, anxiety, atherosclerosis, benign or precancerous skin growths and bone infection among the conditions Dr. Buckhorn treats.
Internists near Dr. Buckhorn
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. Carl William Buckhorn billed Medicare for 173 services in 2024
CMS data shows 173 Medicare services from Dr. Buckhorn across 2 procedure codes in 2024, for 75 Medicare patients. Medicare paid $13,785 for them. Every service was in an office.
Dr. Buckhorn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2072024: 17316%
Dr. Buckhorn compared with the California median for internists, 2024
- Dr. Buckhorn
- California median
- Medicare services
- 173vs 36152% below
- Medicare patients
- 75vs 15150% below
- Part D claims
- 2,920vs 4216.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Buckhorn'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. Buckhorn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Buckhorn and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Carl William Buckhorn treated 75 Medicare patients in 2024, average age 72
CMS counts 75 Medicare patients who saw Dr. Buckhorn in 2024. The largest group is 65 to 74, with 36 patients. 67% of them have high blood pressure, and 45% have high cholesterol. 32% are also on Medicaid. Their average risk score is 1.48, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Buckhorn's median patient age at 64, with 46% women.
Dr. Buckhorn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Buckhorn's Medicare patients by sex, 2024
- Women4155%
- Men3445%
Chronic conditions among Dr. Buckhorn's Medicare patients, 2024
- High blood pressure67%
- High cholesterol45%
- Arthritis37%
- Anxiety33%
- Diabetes31%
- Mood disorders31%
- Depression28%
- Ischemic heart disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Buckhorn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Carl William Buckhorn wrote 3,541 Medicare Part D claims in 2024
In 2024, Dr. Buckhorn wrote 3,541 Medicare Part D claims for 297 patients. 90% of them were for generic drugs. CMS names the drug for 2,920 of them, across 76 drugs with 11 or more claims each, at $135,508 in total drug cost. In 2023, CMS named 3,091 claims across 79 drugs.
Dr. Buckhorn's Part D claims by kind of drug, 2024
- Generic3,180 claims90%
- Brand-name348 claims10%
- Other13 claims0%
Dr. Buckhorn'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. Buckhorn's Part D claims, 2024
- Opioids12%410 of 3,541 claims
- Antibiotics5%172 of 3,541 claims
- Antipsychotics, patients 65 and over1%39 of 3,541 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: 3,0912024: 2,9206%
Drugs named by CMS: 76 in 2024, 79 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. Carl William Buckhorn offers telehealth to Medicare patients
Dr. Buckhorn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Buckhorn as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Carl William Buckhorn received $1,370 in industry payments from 2018 to 2025
CMS Open Payments shows 15 general payments to Dr. Buckhorn from 8 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $481.
General payments to Dr. Buckhorn by program year, 2018 to 2025
Companies that paid Dr. Buckhorn the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Carl William Buckhorn graduated from UCSF School of Medicine
Dr. Buckhorn graduated from UCSF School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Carl William Buckhorn accepts plans from 10 insurance carriers
Dr. Buckhorn is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- LA Care
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- +2 more carriersWith a free account
Plan types Dr. Buckhorn accepts, by number of carriers
- Medicare9
- PPO6
- HMO4
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Carl William Buckhorn'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 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) |
| 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. Carl William Buckhorn
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. Carl William Buckhorn's NPI number?
Dr. Carl William Buckhorn's NPI number is 1649264847. It was assigned on September 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Carl William Buckhorn?
Dr. Carl William Buckhorn is an internist in Fullerton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Carl William Buckhorn practice?
Dr. Buckhorn practices at 2282 N State College Blvd, Fullerton, CA 92831. Dr. Buckhorn's primary practice is Medical and Healing Arts, Inc in Fullerton, California. Dmand AI also links Dr. Buckhorn to 3 skilled nursing facilities and 1 physician office.
What is Dr. Carl William Buckhorn's office phone number?
The practice phone on file for Dr. Buckhorn is (714) 871-7118.
What is Dr. Carl William Buckhorn's medical license number?
Dr. Buckhorn holds California license G73630.
Which hospitals is Dr. Carl William Buckhorn affiliated with?
Dr. Buckhorn is affiliated with Providence St. Jude Medical Center.
Does Dr. Carl William Buckhorn accept Medicare?
Yes. CMS data shows Dr. Buckhorn billed Medicare for 173 services in 2024, and Dr. Buckhorn accepts Medicare assignment.
Does Dr. Carl William Buckhorn offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Buckhorn as offering telehealth services.
How many Medicare patients does Dr. Carl William Buckhorn see?
CMS counts 75 Medicare patients who saw Dr. Buckhorn in 2024, with an average age of 72.
What services does Dr. Carl William Buckhorn bill to Medicare?
In 2024, Dr. Buckhorn's most billed Medicare services were office visit, established patient (99214) and care management and other visits (99442).
Show 5 more questionsShow fewer questions
Where did Dr. Carl William Buckhorn go to medical school?
Dr. Buckhorn graduated from UCSF School of Medicine in 1990.
What drugs does Dr. Carl William Buckhorn prescribe most?
In 2024 Medicare Part D data, Dr. Buckhorn's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Gabapentin and Alprazolam.
Has Dr. Carl William Buckhorn received payments from drug or device companies?
CMS Open Payments shows $1,370 in general payments to Dr. Buckhorn from 8 companies from 2018 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Carl William Buckhorn been practicing?
Dr. Buckhorn graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Carl William Buckhorn accept?
Dr. Buckhorn is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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