Regina B. Ha, PA-C
- Medicare patients, 2024
- 16
- Part D claims, 2024
- 213
- Hospital affiliations
- 2
- Industry payments
- $33
- Medical groups
- 2
- Practice address
- 101 E. Valencia Mesa Drive, Fullerton, CA 92835
- Practice phone
- Call (714) 578-8706
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St. Jude Medical Center - Unit
Acute Care Hospital-Unit · Fullerton, California
Find Regina Ha'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.
Regina B. Ha is a physician assistant in Fullerton, California
Regina Ha practices at St. Jude Medical Center - Unit in Fullerton, California.
Regina Ha's NPI, 1730598400, was assigned on August 7, 2014. Regina Ha holds California license PA51623.
- NPI
- 1730598400NPI Registry (opens in a new tab)
- NPI enumeration date
- August 7, 2014
- NPI status
- Active
- Practice phone
- (714) 578-8706
- 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 Dmand AI Affiliation Data
Regina B. Ha practices at St. Jude Medical Center - Unit in Fullerton, California
Regina Ha's primary practice is St. Jude Medical Center - Unit, at 101 E. Valencia Mesa Drive, Fullerton, CA 92835 in Orange County. The practice phone is (714) 578-8706.
- St. Jude Medical Center - Unit101 E. Valencia Mesa Drive, Fullerton, CA 92835 · Orange CountyPhone(714) 578-8706
Source: Dmand AI Affiliation Data
Regina B. Ha is affiliated with 2 sites of care and 2 medical groups
Regina Ha's primary practice is St. Jude Medical Center - Unit in Fullerton, California. Regina Ha is also affiliated with Rady Children's Hospital San Diego. The medical group on file is St. Jude Emergency Medicine Group. Dmand AI also links Regina Ha to 1 more medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Regina B. Ha's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Regina Ha practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Jude Medical Center - Unit | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Regina B. Ha is one of 11,482 physician assistants in California
Physician assistant is Regina Ha's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Regina Ha is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Regina Ha is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Physician assistants near Regina Ha
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
Regina B. Ha treated 16 Medicare patients in 2024, average age 74
CMS counts 16 Medicare patients who saw Regina Ha in 2024. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 1.46, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Regina Ha's median patient age at 35, with 60% women.
Chronic conditions among Regina Ha's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Regina Ha's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 35
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Regina B. Ha wrote 213 Medicare Part D claims in 2024
In 2024, Regina Ha wrote 213 Medicare Part D claims for 104 patients. 98% of them were for generic drugs. CMS names the drug for 127 of them, across 4 drugs with 11 or more claims each, at $806 in total drug cost.
Regina Ha's Part D claims by kind of drug, 2024
- Generic208 claims98%
- Brand-name and other5 claims2%
Regina Ha'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 Regina Ha's Part D claims, 2024
- Opioids22%46 of 213 claims
- Antibiotics19%40 of 213 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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Regina B. Ha received $33 in industry payments in 2025
CMS Open Payments shows 1 general payment to Regina Ha from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $33.
Companies that paid Regina Ha the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Regina B. Ha is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Regina B. Ha'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 Data |
| 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 Regina B. Ha
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Regina B. Ha's NPI number?
Regina B. Ha's NPI number is 1730598400. It was assigned on August 7, 2014, and it is active in the NPI Registry.
What does Regina B. Ha specialize in?
Regina B. Ha is a physician assistant in Fullerton, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Regina B. Ha practice?
Regina Ha practices at 101 E. Valencia Mesa Drive, Fullerton, CA 92835. Regina Ha's primary practice is St. Jude Medical Center - Unit in Fullerton, California. Dmand AI also links Regina Ha to 1 medical group.
What is Regina B. Ha's office phone number?
The practice phone on file for Regina Ha is (714) 578-8706.
What is Regina B. Ha's medical license number?
Regina Ha holds California license PA51623.
Which hospitals is Regina B. Ha affiliated with?
Regina Ha is affiliated with Rady Children's Hospital San Diego. Dmand AI links Regina Ha to 1 more hospital.
What medical group is Regina B. Ha part of?
Regina Ha is linked to St. Jude Emergency Medicine Group. Dmand AI links Regina Ha to 1 more medical group.
How many Medicare patients does Regina B. Ha see?
CMS counts 16 Medicare patients who saw Regina Ha in 2024, with an average age of 74.
Is Regina B. Ha board certified?
Yes. Regina Ha is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What drugs does Regina B. Ha prescribe most?
In 2024 Medicare Part D data, Regina Ha's most prescribed drugs by claims were Ondansetron ODT, Hydrocodone-Acetaminophen and Cephalexin.
Has Regina B. Ha received payments from drug or device companies?
CMS Open Payments shows $33 in general payments to Regina Ha from 1 company from 2025 to 2025. The largest total came from Stryker Corporation.
How long has Regina B. Ha been practicing?
Regina Ha's NPI was assigned in 2014.
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