Grace Castanon, PA-C
- Medicare services, 2024
- 220
- Medicare patients, 2024
- 228
- Part D claims, 2024
- 552
- Hospital affiliations
- 2
- Industry payments
- $1,456
- Practice address
- 300 W Huntington Dr, Arcadia, CA 91007
- Practice phone
- Call (626) 898-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Grace Castanon's professional email, personal email and mobile number
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Grace Castanon is a physician assistant in Arcadia, California
Grace Castanon practices at USC Arcadia Hospital in Arcadia, California, part of University of Southern California.
Grace Castanon's NPI, 1508358805, was assigned on June 1, 2018. Grace Castanon graduated from University of Southern California Keck School of Medicine in 2018. Grace Castanon holds California license 55628.
- NPI
- 1508358805NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193076081
- NPI enumeration date
- June 1, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 898-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Grace Castanon practices at USC Arcadia Hospital in Arcadia, California
Grace Castanon's primary practice is USC Arcadia Hospital, at 300 W Huntington Dr, Arcadia, CA 91007 in Los Angeles County. The practice phone is (626) 898-8000.
- USC Arcadia Hospital300 W Huntington Dr, Arcadia, CA 91007 · Los Angeles CountyPhone(626) 898-8000
Source: Dmand AI Affiliation Data
Grace Castanon is affiliated with 4 sites of care and 2 medical groups
Grace Castanon's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. The medical group on file is USC Care Medical Group. Dmand AI also links Grace Castanon to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Grace Castanon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Grace Castanon practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| USC Arcadia Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Grace Castanon is one of 11,482 physician assistants in California
Physician assistant is Grace Castanon's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Grace Castanon is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists bursitis, fluid in a joint, joint pain and lower back pain among the conditions Grace Castanon treats.
Physician assistants near Grace Castanon
Counts of physician assistants 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
Grace Castanon billed Medicare for 220 services in 2024
CMS data shows 220 Medicare services from Grace Castanon across 3 procedure codes in 2024, for 228 Medicare patients. Medicare paid $30,614 for them. Every service was in a facility, such as a hospital, rather than an office.
Grace Castanon's Medicare services by type, 2024
- Surgery206
- Office and hospital visits14
Grace Castanon compared with the California median for physician assistants, 2024
- Grace Castanon
- California median
- Medicare services
- 220vs 2048% above
- Medicare patients
- 228vs 1052.2 times
- Part D claims
- 501vs 2432.1 times
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Grace Castanon'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Grace Castanon treated 228 Medicare patients in 2024, average age 75
CMS counts 228 Medicare patients who saw Grace Castanon in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have arthritis, and 75% have high cholesterol. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Grace Castanon's median patient age at 67, with 57% women.
Grace Castanon's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Grace Castanon's Medicare patients by sex, 2024
- Women14764%
- Men8136%
Chronic conditions among Grace Castanon's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure70%
- Ischemic heart disease33%
- Osteoporosis29%
- Anxiety23%
- Mood disorders22%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Grace Castanon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women57%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Grace Castanon wrote 552 Medicare Part D claims in 2024
In 2024, Grace Castanon wrote 552 Medicare Part D claims for 407 patients. 100% of them were for generic drugs. CMS names the drug for 501 of them, across 5 drugs with 11 or more claims each, at $2,541 in total drug cost.
Grace Castanon'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 Grace Castanon's Part D claims, 2024
- Opioids24%130 of 552 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
How Grace Castanon takes part in Medicare
Grace Castanon accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Grace Castanon received $1,456 in industry payments from 2024 to 2025
CMS Open Payments shows 19 general payments to Grace Castanon from 5 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $1,103.
General payments to Grace Castanon by program year, 2024 to 2025
Companies that paid Grace Castanon the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Grace Castanon graduated from University of Southern California Keck School of Medicine
Grace Castanon graduated from University of Southern California Keck School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Grace Castanon'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 Data |
| Primary practice, affiliations and health system | Dmand 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) |
| 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 Grace Castanon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Grace Castanon's NPI number?
Grace Castanon's NPI number is 1508358805. It was assigned on June 1, 2018, and it is active in the NPI Registry.
What does Grace Castanon specialize in?
Grace Castanon is a physician assistant in Arcadia, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Grace Castanon practice?
Grace Castanon practices at 300 W Huntington Dr, Arcadia, CA 91007. Grace Castanon's primary practice is USC Arcadia Hospital in Arcadia, California, part of University of Southern California. Dmand AI also links Grace Castanon to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Grace Castanon's office phone number?
The practice phone on file for Grace Castanon is (626) 898-8000.
What is Grace Castanon's medical license number?
Grace Castanon holds California license 55628.
Which hospitals is Grace Castanon affiliated with?
Grace Castanon practices at USC Arcadia Hospital in Arcadia, California. Dmand AI links Grace Castanon to 1 more hospital.
What medical group is Grace Castanon part of?
Grace Castanon is linked to USC Care Medical Group. Dmand AI links Grace Castanon to 1 more medical group.
Does Grace Castanon accept Medicare?
Yes. CMS data shows Grace Castanon billed Medicare for 220 services in 2024, and Grace Castanon accepts Medicare assignment.
How many Medicare patients does Grace Castanon see?
CMS counts 228 Medicare patients who saw Grace Castanon in 2024, with an average age of 75.
What services does Grace Castanon bill to Medicare?
In 2024, Grace Castanon's most billed Medicare services were surgery: bones and joints (27447), surgery: bones and joints (27130) and office visit, established patient (99213).
Show 4 more questionsShow fewer questions
Where did Grace Castanon go to medical school?
Grace Castanon graduated from University of Southern California Keck School of Medicine in 2018.
What drugs does Grace Castanon prescribe most?
In 2024 Medicare Part D data, Grace Castanon's most prescribed drugs by claims were Mupirocin, Tramadol HCl and Gabapentin.
Has Grace Castanon received payments from drug or device companies?
CMS Open Payments shows $1,456 in general payments to Grace Castanon from 5 companies from 2024 to 2025. The largest total came from Stryker Corporation.
How long has Grace Castanon been practicing?
Grace Castanon graduated from medical school in 2018, 8 years ago.
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