J Gerontol A Biol Sci Med Sci
AgingCognitionComorbidity
Dr. Catherine K. Buchanan, MD
NPI1114903341
- Medicare services, 2023
- 349
- Part D claims, 2024
- 298
- Publications
- 1
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 9499 I Ave, Hesperia, CA 92345
- Practice phone
- Call (760) 244-8776
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tender Heart Adult Day Health Care
Hesperia, California
Find Dr. Buchanan's professional email, personal email and mobile number
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Dr. Catherine K. Buchanan is a geriatric medicine (internal medicine) physician in Hesperia, California
Dr. Buchanan practices at Tender Heart Adult Day Health Care in Hesperia, California.
Dr. Buchanan's NPI, 1114903341, was assigned on December 20, 2005. Dr. Buchanan graduated from Wake Forest School of Medicine in 1999. Dr. Buchanan holds California license A90592.
NPI and contact details
- NPI
- 1114903341NPI Registry (opens in a new tab)
- NPI enumeration date
- December 20, 2005
- NPI status
- Active
- Practice phone
- (760) 244-8776
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Catherine K. Buchanan practices at Tender Heart Adult Day Health Care in Hesperia, California
Dr. Buchanan's primary practice is Tender Heart Adult Day Health Care, at 9499 I Ave, Hesperia, CA 92345 in San Bernardino County. The practice phone is (760) 244-8776.
- Tender Heart Adult Day Health Care9499 I Ave, Hesperia, CA 92345 · San Bernardino CountyPhone(760) 244-8776
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Catherine K. Buchanan is affiliated with 2 sites of care and 1 medical group
Dr. Buchanan's primary practice is Tender Heart Adult Day Health Care in Hesperia, California. The medical group on file is Bay Area Sports Orthopaedics. Dmand AI also links Dr. Buchanan to 1 more group practice or clinic, named with a free account.
Tender Heart Adult Day Health CarePrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Catherine K. Buchanan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buchanan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tender Heart Adult Day Health Care | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Catherine K. Buchanan is one of 497 geriatric medicine (internal medicine) physicians in California
Geriatric medicine is Dr. Buchanan's primary specialty in the NPI Registry, under taxonomy code 207RG0300X. Dr. Buchanan is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Buchanan's licenses on file in 2 states: California and North Carolina.
Specialties and state licenses
- Geriatric medicine (internal medicine), CaliforniaPrimary
- North Carolina license
Clinical focus
Dmand AI lists alzheimer's disease, anxiety, atrial fibrillation and flutter, cardiomyopathy, chronic anemia, chronic diabetes, chronic embolism thrombosis and chronic hypertension among the conditions Dr. Buchanan treats.
Geriatric medicine (internal medicine) physicians near Dr. Buchanan
Counts of geriatric medicine (internal 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. Catherine K. Buchanan billed Medicare for 349 services in 2023
CMS data shows 349 Medicare services from Dr. Buchanan across 2 procedure codes in 2023. Medicare paid $32,106 for them. Every service was in an office.
Medicare services, 2023349
Paid by Medicare$32,106
Procedure codes2
Dr. Buchanan's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 3172023: 34910%
Dr. Buchanan compared with the California median for geriatric medicine (internal medicine) physicians, 2023
- Dr. Buchanan
- California median
- Medicare services
- 349vs 42418% below
- Part D claims
- 123vs 93087% below
Medians across 466 geriatric medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Buchanan's most billed Medicare procedure codes, 2023
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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Buchanan and other geriatric medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Catherine K. Buchanan's patients have a median age of 76
Across all payers, Dmand AI patient panel data puts Dr. Buchanan's median patient age at 76, with 80% women.
Dr. Buchanan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. Catherine K. Buchanan wrote 298 Medicare Part D claims in 2024
In 2024, Dr. Buchanan wrote 298 Medicare Part D claims for 19 patients. 94% of them were for generic drugs. CMS names the drug for 123 of them, across 9 drugs with 11 or more claims each, at $8,638 in total drug cost. In 2023, CMS named 815 claims across 35 drugs.
Part D claims, 2024298
Drugs named by CMS9
Total drug cost$8,638
Part D patients19
Dr. Buchanan's Part D claims by kind of drug, 2024
- Generic280 claims94%
- Brand-name18 claims6%
Dr. Buchanan'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. Buchanan's Part D claims, 2024
- Antipsychotics, patients 65 and over5%16 of 298 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: 8152024: 12385%
Drugs named by CMS: 9 in 2024, 35 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
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Dr. Catherine K. Buchanan has 1 publication on record
Dmand AI links 1 paper to Dr. Buchanan. Dr. Buchanan's most frequent co-author is Steven T. Dekosky, MD.
Papers1
Dr. Buchanan's most frequent co-authors
Recent publications by Dr. Buchanan
See who Dr. Buchanan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Buchanan works with, so you can find a warm path to the right geriatric medicine (internal medicine) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Catherine K. Buchanan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Buchanan, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Buchanan
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Catherine K. Buchanan graduated from Wake Forest School of Medicine
Dr. Buchanan graduated from Wake Forest School of Medicine in 1999.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Catherine K. Buchanan'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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Catherine K. Buchanan
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. Catherine K. Buchanan's NPI number?
Dr. Catherine K. Buchanan's NPI number is 1114903341. It was assigned on December 20, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Catherine K. Buchanan?
Dr. Catherine K. Buchanan is a geriatric medicine (internal medicine) physician in Hesperia, California. The primary specialty in the NPI Registry is Geriatric Medicine (Internal Medicine) Physician (taxonomy code 207RG0300X).
Where does Dr. Catherine K. Buchanan practice?
Dr. Buchanan practices at 9499 I Ave, Hesperia, CA 92345. Dr. Buchanan's primary practice is Tender Heart Adult Day Health Care in Hesperia, California. Dmand AI also links Dr. Buchanan to 1 group practice or clinic.
What is Dr. Catherine K. Buchanan's office phone number?
The practice phone on file for Dr. Buchanan is (760) 244-8776.
What is Dr. Catherine K. Buchanan's medical license number?
Dr. Buchanan holds California license A90592, one of the licenses on file in 2 states.
Which states has Dr. Catherine K. Buchanan been licensed in?
Dmand AI has state licenses on file for Dr. Buchanan in California (2005 to 2027) and North Carolina (1999 to 2005).
What medical group is Dr. Catherine K. Buchanan part of?
Dr. Buchanan is linked to Bay Area Sports Orthopaedics.
Does Dr. Catherine K. Buchanan accept Medicare?
Yes. CMS data shows Dr. Buchanan billed Medicare for 349 services in 2023.
Is Dr. Catherine K. Buchanan board certified?
Yes. Dr. Buchanan is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. Catherine K. Buchanan bill to Medicare?
In 2023, Dr. Buchanan's most billed Medicare services were home visit (99349) and home visit (99348).
Show 5 more questionsShow fewer questions
Where did Dr. Catherine K. Buchanan go to medical school?
Dr. Buchanan graduated from Wake Forest School of Medicine in 1999.
What drugs does Dr. Catherine K. Buchanan prescribe most?
In 2024 Medicare Part D data, Dr. Buchanan's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
How long has Dr. Catherine K. Buchanan been practicing?
Dr. Buchanan graduated from medical school in 1999, 27 years ago.
Does Dr. Catherine K. Buchanan do research?
Dmand AI links 1 publication to Dr. Buchanan.
Who does Dr. Catherine K. Buchanan publish with?
Dr. Buchanan's most frequent co-authors are Steven T. Dekosky, MD (1 shared paper).
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