Dr. Julie Ann Hersk, MD
- Medicare services, 2024
- 125
- Medicare patients, 2024
- 116
- Part D claims, 2024
- 90
- MIPS score, 2024
- 97
- Hospital affiliations
- 1
- Practice address
- 222 W 39th Ave, San Mateo, CA 94403
- Practice phone
- Call (650) 573-2222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hersk's professional email, personal email and mobile number
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Dr. Julie Ann Hersk is an emergency medicine physician in San Mateo, California
Dr. Hersk practices at San Mateo Medical Center in San Mateo, California, part of County of San Mateo, California.
Dr. Hersk's NPI, 1023114030, was assigned on September 16, 2006. Dr. Hersk graduated from UC Davis School of Medicine in 2003. Dr. Hersk holds California license A89497.
- NPI
- 1023114030NPI Registry (opens in a new tab)
- NPI enumeration date
- September 16, 2006
- NPI status
- Active
- Practice phone
- (650) 573-2222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Julie Ann Hersk practices at San Mateo Medical Center in San Mateo, California
Dr. Hersk's primary practice is San Mateo Medical Center, at 222 W 39th Ave, San Mateo, CA 94403 in San Mateo County. The practice phone is (650) 573-2222.
- San Mateo Medical Center222 W 39th Ave, San Mateo, CA 94403 · San Mateo CountyPhone(650) 573-2222
Source: Dmand AI Affiliation Data
Dr. Julie Ann Hersk is affiliated with 2 sites of care and 1 medical group
Dr. Hersk's primary practice is San Mateo Medical Center in San Mateo, California, part of County of San Mateo, California. The medical group on file is Vituity. Dmand AI also links Dr. Hersk to 1 more skilled nursing facility, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Julie Ann Hersk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hersk practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Mateo Medical Center | Available with a free account |
| +1 more affiliated site | 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 County of San Mateo, California and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Julie Ann Hersk is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Hersk's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Hersk is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Hersk is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Hersk
Counts of emergency 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. Julie Ann Hersk billed Medicare for 125 services in 2024
CMS data shows 125 Medicare services from Dr. Hersk across 4 procedure codes in 2024, for 116 Medicare patients. Medicare paid $15,941 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hersk's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 342024: 112229%
- Tests and treatments
- 2023: 02024: 13
Dr. Hersk compared with the California median for emergency medicine physicians, 2024
- Dr. Hersk
- California median
- Medicare services
- 125vs 26553% below
- Medicare patients
- 116vs 24352% below
- Part D claims
- 12vs 6281% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Hersk'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hersk and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Julie Ann Hersk treated 116 Medicare patients in 2024, average age 74
CMS counts 116 Medicare patients who saw Dr. Hersk in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 51% are also on Medicaid. Their average risk score is 1.67, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Hersk's median patient age at 42, with 52% women.
Dr. Hersk's Medicare patients by age, 2024
Dr. Hersk's Medicare patients by sex, 2024
- Women6354%
- Men5346%
Chronic conditions among Dr. Hersk's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Mood disorders38%
- Ischemic heart disease35%
- Depression34%
- Anxiety32%
- Diabetes32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hersk'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
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Julie Ann Hersk wrote 90 Medicare Part D claims in 2024
In 2024, Dr. Hersk wrote 90 Medicare Part D claims for 57 patients. 93% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $46 in total drug cost.
Dr. Hersk's Part D claims by kind of drug, 2024
- Generic84 claims93%
- Brand-name and other6 claims7%
Dr. Hersk's most prescribed drugs by claims, 2019
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. Hersk's Part D claims, 2024
- Antibiotics33%30 of 90 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
Dr. Julie Ann Hersk scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Hersk for performance year 2024, reported as part of a group.
Dr. Hersk's MIPS scores, performance year 2024
- 97of 100Final score
- 90of 100Quality
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Julie Ann Hersk graduated from UC Davis School of Medicine
Dr. Hersk graduated from UC Davis School of Medicine in 2003.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Julie Ann Hersk accepts plans from 5 insurance carriers
Dr. Hersk is in network with 5 carriers, including United Healthcare, Elevance and Aspirus Health Plan. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- HCSC
Plan types Dr. Hersk accepts, by number of carriers
- PPO3
- HMO2
- POS2
- EPO1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Julie Ann Hersk'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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Julie Ann Hersk
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. Julie Ann Hersk's NPI number?
Dr. Julie Ann Hersk's NPI number is 1023114030. It was assigned on September 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Julie Ann Hersk?
Dr. Julie Ann Hersk is an emergency medicine physician in San Mateo, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Julie Ann Hersk practice?
Dr. Hersk practices at 222 W 39th Ave, San Mateo, CA 94403. Dr. Hersk's primary practice is San Mateo Medical Center in San Mateo, California, part of County of San Mateo, California. Dmand AI also links Dr. Hersk to 1 skilled nursing facility.
What is Dr. Julie Ann Hersk's office phone number?
The practice phone on file for Dr. Hersk is (650) 573-2222.
What is Dr. Julie Ann Hersk's medical license number?
Dr. Hersk holds California license A89497.
Which hospitals is Dr. Julie Ann Hersk affiliated with?
Dr. Hersk practices at San Mateo Medical Center in San Mateo, California.
What medical group is Dr. Julie Ann Hersk part of?
Dr. Hersk is linked to Vituity.
Does Dr. Julie Ann Hersk accept Medicare?
Yes. CMS data shows Dr. Hersk billed Medicare for 125 services in 2024.
What is Dr. Julie Ann Hersk's MIPS score?
Dr. Hersk's MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Julie Ann Hersk see?
CMS counts 116 Medicare patients who saw Dr. Hersk in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
Is Dr. Julie Ann Hersk board certified?
Yes. Dr. Hersk is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Julie Ann Hersk bill to Medicare?
In 2024, Dr. Hersk's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and heart test or procedure (93010).
Where did Dr. Julie Ann Hersk go to medical school?
Dr. Hersk graduated from UC Davis School of Medicine in 2003.
What drugs does Dr. Julie Ann Hersk prescribe most?
In 2019 Medicare Part D data, Dr. Hersk's most prescribed drugs by claims were Prednisone.
How long has Dr. Julie Ann Hersk been practicing?
Dr. Hersk graduated from medical school in 2003, 23 years ago.
What insurance does Dr. Julie Ann Hersk accept?
Dr. Hersk is in network with 5 carriers, including United Healthcare, Elevance and Aspirus Health Plan. PPO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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