Grace Oh
- Part D claims, 2026
- 410
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2023
- Practice address
- 22461 Antonio Pkwy, Suite A135, Rancho Santa Margarita, CA 92688-2806
- Practice phone
- Call (949) 760-9222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita
Urgent care · Rancho Santa Margarita, California
Find Grace Oh'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.
Grace Oh is a physician assistant in Rancho Santa Margarita, California
Grace Oh practices at Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita in Rancho Santa Margarita, California.
Grace Oh's NPI, 1790560910, was assigned on August 28, 2023.
- NPI
- 1790560910NPI Registry (opens in a new tab)
- NPI enumeration date
- August 28, 2023
- NPI status
- Active
- Practice phone
- (949) 760-9222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Grace Oh practices at Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita in Rancho Santa Margarita, California
Grace Oh's primary practice is Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita, at 22461 Antonio Pkwy, Suite A135, Rancho Santa Margarita, CA 92688-2806. The practice phone is (949) 760-9222.
- Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita22461 Antonio Pkwy, Suite A135, Rancho Santa Margarita, CA 92688-2806Phone(949) 760-9222
Source: Doctors and Clinicians National Downloadable File (CMS)
Grace Oh is affiliated with 1 site of care and 1 medical group
Grace Oh's primary practice is Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita in Rancho Santa Margarita, California. The medical group on file is Marque Urgent Care.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Grace Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Grace Oh practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Grace Oh is one of 11,482 physician assistants in California
Physician assistant is Grace Oh's primary specialty in the NPI Registry, under taxonomy code 363A00000X.
Specialties and state licenses
- Physician assistantPrimary
Physician assistants near Grace Oh
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 Oh's patients have a median age of 42
Across all payers, Dmand AI patient panel data puts Grace Oh's median patient age at 42, with 80% women.
Grace Oh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 42
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Grace Oh wrote 410 Medicare Part D claims in 2026
In 2026, Grace Oh wrote 410 Medicare Part D claims for 182 patients. 89% of them were for generic drugs.
Grace Oh's Part D claims by kind of drug, 2026
- Generic366 claims89%
- Brand-name and other44 claims11%
Drug classes CMS tracks in Grace Oh's Part D claims, 2026
- Antibiotics14%57 of 410 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2026 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sources for Grace Oh'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 | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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 Oh
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 Oh's NPI number?
Grace Oh's NPI number is 1790560910. It was assigned on August 28, 2023, and it is active in the NPI Registry.
What does Grace Oh specialize in?
Grace Oh is a physician assistant in Rancho Santa Margarita, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Grace Oh practice?
Grace Oh practices at 22461 Antonio Pkwy, Suite A135, Rancho Santa Margarita, CA 92688-2806. Grace Oh's primary practice is Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita in Rancho Santa Margarita, California.
What is Grace Oh's office phone number?
The practice phone on file for Grace Oh is (949) 760-9222. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Grace Oh's email address?
Dmand AI checks professional and personal email addresses for Grace Oh through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What medical group is Grace Oh part of?
Grace Oh is linked to Marque Urgent Care.
Who does Grace Oh practice with?
Dmand AI links 47 HCPs to Grace Oh's primary medical group, 16 of them physician assistants. A free account lists them, with verified contacts.
How long has Grace Oh been practicing?
Grace Oh's NPI was assigned in 2023.
What EHR does Grace Oh's practice use?
Dmand AI tracks the EHR system at Marque Medical Clinic - Emergency & Hospital Medicine - Rancho Santa Margarita. The vendor and product are available with a free Dmand AI account.
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