Dr. Helena M. Horak, MD
- Medicare services, 2024
- 1,407
- Medicare patients, 2024
- 874
- Part D claims, 2024
- 304
- Publications
- 2
- MIPS score, 2024
- 80
- Practice address
- 215 W Janss Rd, Thousand Oaks, CA 91360
- Practice phone
- Call (805) 497-2727
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Horak'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.
Dr. Helena M. Horak is an emergency medicine physician in Thousand Oaks, California
Dr. Horak practices at Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare.
Dr. Horak's NPI, 1477789949, was assigned on June 10, 2009. Dr. Horak graduated from Stanford University School Of Medicine in 2009. Dr. Horak holds California license A116821.
- NPI
- 1477789949NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103071329
- NPI enumeration date
- June 10, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 497-2727
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Helena M. Horak practices at Los Robles Regional Medical Center in Thousand Oaks, California
Dr. Horak's primary practice is Los Robles Regional Medical Center, at 215 W Janss Rd, Thousand Oaks, CA 91360 in Ventura County. The practice phone is (805) 497-2727.
- Los Robles Regional Medical Center215 W Janss Rd, Thousand Oaks, CA 91360 · Ventura CountyPhone(805) 497-2727
Source: Dmand AI Affiliation Data
Dr. Helena M. Horak is affiliated with 3 sites of care and 4 medical groups
Dr. Horak's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. Dr. Horak is also affiliated with UCLA West Valley Medical Center. The medical group on file is Team Physicians of California Medical Group Inc. Dmand AI also links Dr. Horak to 1 more hospital and 3 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Helena M. Horak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Horak practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Los Robles Regional Medical Center | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Helena M. Horak is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Horak's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Horak is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Horak's licenses on file in 2 states: California and Montana.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Montana license
Emergency medicine physicians near Dr. Horak
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. Helena M. Horak billed Medicare for 1,407 services in 2024
CMS data shows 1,407 Medicare services from Dr. Horak across 5 procedure codes in 2024, for 874 Medicare patients. Medicare paid $128,131 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Horak's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,0452024: 93610%
- Tests and treatments
- 2023: 7132024: 47134%
Dr. Horak compared with the California median for emergency medicine physicians, 2024
- Dr. Horak
- California median
- Medicare services
- 1,407vs 2655.3 times
- Medicare patients
- 874vs 2433.6 times
- Part D claims
- 156vs 622.5 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Horak'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. Horak 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. Helena M. Horak treated 874 Medicare patients in 2024, average age 79
CMS counts 874 Medicare patients who saw Dr. Horak in 2024. The largest group is 75 to 84, with 312 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 2.07, 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. Horak's median patient age at 54, with 54% women.
Dr. Horak's Medicare patients by age, 2024
Dr. Horak's Medicare patients by sex, 2024
- Women49757%
- Men37743%
Chronic conditions among Dr. Horak's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease46%
- Atrial fibrillation40%
- Heart failure40%
- Mood disorders40%
- Anxiety37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Horak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Helena M. Horak wrote 304 Medicare Part D claims in 2024
In 2024, Dr. Horak wrote 304 Medicare Part D claims for 179 patients. 91% of them were for generic drugs. CMS names the drug for 156 of them, across 5 drugs with 11 or more claims each, at $1,147 in total drug cost. In 2023, CMS named 189 claims across 4 drugs.
Dr. Horak's Part D claims by kind of drug, 2024
- Generic278 claims91%
- Brand-name and other26 claims9%
Dr. Horak'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 Dr. Horak's Part D claims, 2024
- Opioids20%60 of 304 claims
- Antibiotics25%77 of 304 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1892024: 15617%
Drugs named by CMS: 5 in 2024, 4 in 2023.
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. Helena M. Horak scored 80 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 80 out of 100 for Dr. Horak for performance year 2024, reported individually. Dr. Horak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Horak's MIPS scores, performance year 2024
- 80of 100Final score
- 93.3of 100Quality
- 0of 100Improvement Activities
- 80of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Helena M. Horak has 2 publications on record
Dmand AI links 2 papers to Dr. Horak. The most frequent topics are Water Microbiology and Water Supply.
Topics Dr. Horak writes about most
- Water Microbiology
- Water Supply
Recent publications by Dr. Horak
Environ Sci Technol
See who Dr. Horak researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Horak works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Helena M. Horak received $289 in industry payments from 2023 to 2025
CMS Open Payments shows 4 general payments to Dr. Horak from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Abiomed paid the most, $150.
General payments to Dr. Horak by program year, 2023 to 2025
Companies that paid Dr. Horak the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Helena M. Horak graduated from Stanford University School Of Medicine
Dr. Horak graduated from Stanford University School Of Medicine in 2009.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Helena M. Horak accepts plans from 6 insurance carriers
Dr. Horak is in network with 6 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- Elevance
- HCSC
Plan types Dr. Horak accepts, by number of carriers
- Medicare3
- PPO3
- EPO2
- HMO2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. Helena M. Horak'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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (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. Helena M. Horak
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. Helena M. Horak's NPI number?
Dr. Helena M. Horak's NPI number is 1477789949. It was assigned on June 10, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Helena M. Horak?
Dr. Helena M. Horak is an emergency medicine physician in Thousand Oaks, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Helena M. Horak practice?
Dr. Horak practices at 215 W Janss Rd, Thousand Oaks, CA 91360. Dr. Horak's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. Dmand AI also links Dr. Horak to 1 hospital and 3 medical groups.
What is Dr. Helena M. Horak's office phone number?
The practice phone on file for Dr. Horak is (805) 497-2727.
What is Dr. Helena M. Horak's medical license number?
Dr. Horak holds California license A116821, one of the licenses on file in 2 states.
Which states has Dr. Helena M. Horak been licensed in?
Dmand AI has state licenses on file for Dr. Horak in California (2011 to 2027) and Montana (2012 to 2013).
Which hospitals is Dr. Helena M. Horak affiliated with?
Dr. Horak practices at Los Robles Regional Medical Center in Thousand Oaks, California. Dr. Horak is also affiliated with UCLA West Valley Medical Center. Dmand AI links Dr. Horak to 1 more hospital.
What medical group is Dr. Helena M. Horak part of?
Dr. Horak is linked to Team Physicians of California Medical Group Inc. Dmand AI links Dr. Horak to 3 more medical groups.
Does Dr. Helena M. Horak accept Medicare?
Yes. CMS data shows Dr. Horak billed Medicare for 1,407 services in 2024, and Dr. Horak accepts Medicare assignment.
What is Dr. Helena M. Horak's MIPS score?
Dr. Horak's MIPS final score for performance year 2024 is 80 out of 100, reported individually.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Helena M. Horak see?
CMS counts 874 Medicare patients who saw Dr. Horak in 2024, with an average age of 79.
Is Dr. Helena M. Horak board certified?
Yes. Dr. Horak is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Helena M. Horak bill to Medicare?
In 2024, Dr. Horak's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).
Where did Dr. Helena M. Horak go to medical school?
Dr. Horak graduated from Stanford University School Of Medicine in 2009.
What drugs does Dr. Helena M. Horak prescribe most?
In 2024 Medicare Part D data, Dr. Horak's most prescribed drugs by claims were Ondansetron ODT, Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.
Has Dr. Helena M. Horak received payments from drug or device companies?
CMS Open Payments shows $289 in general payments to Dr. Horak from 3 companies from 2023 to 2025. The largest total came from Abiomed.
How long has Dr. Helena M. Horak been practicing?
Dr. Horak graduated from medical school in 2009, 17 years ago.
Does Dr. Helena M. Horak do research?
Dmand AI links 2 publications to Dr. Horak.
What insurance does Dr. Helena M. Horak accept?
Dr. Horak is in network with 6 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross and Blue Shield of Kansas City. Medicare plans come from the most carriers, 3. Check the plan with the practice before a visit.
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