Grace A. O'Brien, PA-C
- Medicare services, 2024
- 551
- Medicare patients, 2024
- 488
- Part D claims, 2024
- 248
- Hospital affiliations
- 1
- Industry payments
- $2,264
- Practice address
- One Medical Plaza, Roseville, CA 95661
- Practice phone
- Call (916) 781-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Grace O'Brien's professional email, personal email and mobile number
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Grace A. O'Brien is a physician assistant in Roseville, California
Grace O'Brien practices at Sutter Roseville Medical Center in Roseville, California, part of Sutter Health.
Grace O'Brien's NPI, 1184963928, was assigned on February 13, 2013. Grace O'Brien graduated from Baylor College of Medicine in 2012. Grace O'Brien holds California license PA22820.
- NPI
- 1184963928NPI Registry (opens in a new tab)
- NPI enumeration date
- February 13, 2013
- NPI status
- Active
- Practice phone
- (916) 781-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Grace A. O'Brien practices at 2 locations in Roseville, California
Grace O'Brien's primary practice is Sutter Roseville Medical Center, at One Medical Plaza, Roseville, CA 95661 in Placer County. The practice phone is (916) 781-1000. Grace O'Brien also practices at Sutter Roseville Medical Center, 1 Medical Plz, Roseville, CA 95661.
- Sutter Roseville Medical CenterPrimaryOne Medical Plaza, Roseville, CA 95661 · Placer CountyPhone(916) 781-1000
- Sutter Roseville Medical Center1 Medical Plz, Roseville, CA 95661 · Placer CountyPhone(800) 353-3369
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Grace A. O'Brien is affiliated with 2 sites of care and 3 medical groups
Grace O'Brien's primary practice is Sutter Roseville Medical Center in Roseville, California, part of Sutter Health. The medical group on file is Vituity. Dmand AI also links Grace O'Brien to 2 more medical groups and 1 group practice or clinic, 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 A. O'Brien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Grace O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sutter Roseville Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Sutter Health and 6.2K+ hospitals, with verified contacts in the same login.
Grace A. O'Brien is one of 11,482 physician assistants in California
Physician assistant is Grace O'Brien's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Grace O'Brien is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Grace O'Brien is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Grace O'Brien
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 A. O'Brien billed Medicare for 551 services in 2024
CMS data shows 551 Medicare services from Grace O'Brien across 7 procedure codes in 2024, for 488 Medicare patients. Medicare paid $50,260 for them. Every service was in a facility, such as a hospital, rather than an office.
Grace O'Brien compared with the California median for physician assistants, 2024
- Grace O'Brien
- California median
- Medicare services
- 551vs 2042.7 times
- Medicare patients
- 488vs 1054.6 times
- Part D claims
- 82vs 24366% below
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Grace O'Brien'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 A. O'Brien treated 488 Medicare patients in 2024, average age 77
CMS counts 488 Medicare patients who saw Grace O'Brien in 2024. The largest group is 75 to 84, with 184 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 23% are also on Medicaid. Their average risk score is 1.71, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Grace O'Brien's median patient age at 53, with 61% women.
Grace O'Brien's Medicare patients by age, 2024
Grace O'Brien's Medicare patients by sex, 2024
- Women33068%
- Men15832%
Chronic conditions among Grace O'Brien's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Mood disorders43%
- Ischemic heart disease40%
- Chronic kidney disease39%
- Depression38%
- Anxiety36%
Share of Medicare patients with each condition. A patient can have several.
Grace O'Brien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Grace A. O'Brien wrote 248 Medicare Part D claims in 2024
In 2024, Grace O'Brien wrote 248 Medicare Part D claims for 169 patients. 91% of them were for generic drugs. CMS names the drug for 82 of them, across 5 drugs with 11 or more claims each, at $532 in total drug cost.
Grace O'Brien's Part D claims by kind of drug, 2024
- Generic226 claims91%
- Brand-name and other22 claims9%
Grace O'Brien'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 O'Brien's Part D claims, 2024
- Opioids17%41 of 248 claims
- Antibiotics17%43 of 248 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
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Grace A. O'Brien received $2,264 in industry payments from 2024 to 2025
CMS Open Payments shows 85 general payments to Grace O'Brien from 19 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 91% of the total. Abbvie Inc. paid the most, $431.
General payments to Grace O'Brien by program year, 2024 to 2025
General payments to Grace O'Brien by kind, 2024 to 2025
- Food and beverage$2,06491%
- Education$2009%
Companies that paid Grace O'Brien 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 A. O'Brien graduated from Baylor College of Medicine
Grace O'Brien graduated from Baylor College of Medicine in 2012. Grace O'Brien is a member of AAPA.
- Medical school
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Grace A. O'Brien'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 Affiliation DataDmand AI Practice 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) |
| 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 A. O'Brien
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 A. O'Brien's NPI number?
Grace A. O'Brien's NPI number is 1184963928. It was assigned on February 13, 2013, and it is active in the NPI Registry.
What does Grace A. O'Brien specialize in?
Grace A. O'Brien is a physician assistant in Roseville, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Grace A. O'Brien practice?
Grace O'Brien practices at One Medical Plaza, Roseville, CA 95661. Grace O'Brien also practices at 1 Medical Plz, Roseville, CA 95661. Grace O'Brien's primary practice is Sutter Roseville Medical Center in Roseville, California, part of Sutter Health. Dmand AI also links Grace O'Brien to 2 medical groups and 1 group practice or clinic.
What is Grace A. O'Brien's office phone number?
The practice phone on file for Grace O'Brien is (916) 781-1000.
What is Grace A. O'Brien's medical license number?
Grace O'Brien holds California license PA22820.
Which hospitals is Grace A. O'Brien affiliated with?
Grace O'Brien practices at Sutter Roseville Medical Center in Roseville, California.
What medical group is Grace A. O'Brien part of?
Grace O'Brien is linked to Vituity. Dmand AI links Grace O'Brien to 2 more medical groups.
Does Grace A. O'Brien accept Medicare?
Yes. CMS data shows Grace O'Brien billed Medicare for 551 services in 2024.
How many Medicare patients does Grace A. O'Brien see?
CMS counts 488 Medicare patients who saw Grace O'Brien in 2024, with an average age of 77.
Is Grace A. O'Brien board certified?
Yes. Grace O'Brien is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
Show 5 more questionsShow fewer questions
What services does Grace A. O'Brien bill to Medicare?
In 2024, Grace O'Brien's most billed Medicare services were hospital inpatient care (99223), hospital inpatient care (99239) and hospital inpatient care (99238).
Where did Grace A. O'Brien go to medical school?
Grace O'Brien graduated from Baylor College of Medicine in 2012.
What drugs does Grace A. O'Brien prescribe most?
In 2024 Medicare Part D data, Grace O'Brien's most prescribed drugs by claims were Hydrocodone-Acetaminophen, Ondansetron ODT and Cephalexin.
Has Grace A. O'Brien received payments from drug or device companies?
CMS Open Payments shows $2,264 in general payments to Grace O'Brien from 19 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Grace A. O'Brien been practicing?
Grace O'Brien graduated from medical school in 2012, 14 years ago.
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