Dr. Christine Sarena Hessler, MD

  • Simi Valley, CA
  • Neurologist
NPI1134495880PAC ID4587956669
Medicare services, 2024
41
Medicare patients, 2024
55
Part D claims, 2022
83
Publications
4
Hospital affiliations
2
Practice address
2975 N Sycamore Dr, Simi Valley, CA 93065
Practice phone
Call (805) 955-6000
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Adventist Health Simi Valley

Hospital · Simi Valley, California

See all 11 affiliations

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Dr. Christine Sarena Hessler is a neurologist in Simi Valley, California

Dr. Hessler practices at Adventist Health Simi Valley in Simi Valley, California, part of Adventist Health.

Dr. Hessler's NPI, 1134495880, was assigned on March 27, 2012. Dr. Hessler graduated from UCSF School of Medicine in 2012. Dr. Hessler holds California license A128573.

NPI and contact details
Medicare PAC ID
4587956669
NPI enumeration date
March 27, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(805) 955-6000
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; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Christine Sarena Hessler practices at Adventist Health Simi Valley in Simi Valley, California

Dr. Hessler's primary practice is Adventist Health Simi Valley, at 2975 N Sycamore Dr, Simi Valley, CA 93065 in Ventura County. The practice phone is (805) 955-6000.

Source: Dmand AI Affiliation Data

Dr. Christine Sarena Hessler is affiliated with 6 sites of care and 5 medical groups

Dr. Hessler's primary practice is Adventist Health Simi Valley in Simi Valley, California, part of Adventist Health. Dr. Hessler is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Hessler to 4 more medical groups, 3 group practices and clinics and 1 community health center, each named with a free account.

See all 11 affiliations for Dr. Hessler

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Christine Sarena Hessler's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hessler practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Adventist Health Simi ValleyAvailable with a free account
+5 more sites and 4 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Christine Sarena Hessler is one of 2,207 neurologists in California

Neurology is Dr. Hessler's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Hessler is board certified in neurology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Hessler's licenses on file in 14 states: California, Delaware, New Mexico, Washington, Florida, Oklahoma, Colorado, Indiana, Michigan, Montana, New Hampshire, Oregon, Arkansas and Texas.

Specialties and state licenses

  • Neurology, CaliforniaPrimaryLicense A128573 · 2014 to 2026 · taxonomy 2084N0400X
  • Delaware license2024 to 2027
  • New Mexico license2023 to 2027
  • Washington licenseLicense MD61345039 · 2022 to 2027
  • Florida licenseLicense TPME5937 · 2024 to 2026
  • Oklahoma license2024 to 2026
  • Colorado license2023 to 2025
  • Indiana license2022 to 2025
  • Michigan license2022 to 2025
  • Montana license2024 to 2025
  • New Hampshire license2023 to 2025
  • Oregon license2022 to 2025
  • Arkansas licenseLicense E15869 · 2022 to 2024
  • Texas license2022 to 2024

Neurologists near Dr. Hessler

Counts of neurologists 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. Christine Sarena Hessler billed Medicare for 41 services in 2024

CMS data shows 41 Medicare services from Dr. Hessler across 2 procedure codes in 2024, for 55 Medicare patients. Medicare paid $4,373 for them. Every service was in an office.

Medicare services, 202441
Medicare patients55
Paid by Medicare$4,373
Procedure codes2

Dr. Hessler's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Other services
2023: 672024: 2563%
Office and hospital visits
2023: 02024: 16

Dr. Hessler compared with the California median for neurologists, 2024

  • Dr. Hessler
  • California median
Medicare services
41vs 40490% below
Medicare patients
55vs 19071% below
Part D claims
83vs 32474% below

Medians across 1,995 neurologists in California with Dmand AI profiles that report each measure.

Dr. Hessler'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.

See all procedures by Dr. Hessler

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Christine Sarena Hessler treated 55 Medicare patients in 2024, average age 77

CMS counts 55 Medicare patients who saw Dr. Hessler in 2024. The largest group is 75 to 84, with 20 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 1.91, 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. Hessler's median patient age at 67, with 62% women.

Medicare patients, 202455
Average age77
Average risk score1.91
Also on Medicaid36%

Dr. Hessler's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Hessler's Medicare patients by sex, 2024

  • Women3156%
  • Men2444%

Chronic conditions among Dr. Hessler's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Stroke or TIA75%
  4. Diabetes56%
  5. Chronic kidney disease40%
  6. Arthritis38%
  7. Mood disorders36%
  8. Anxiety33%

Share of Medicare patients with each condition. A patient can have several.

Dr. Hessler's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women62%
  • Men37%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Christine Sarena Hessler wrote 83 Medicare Part D claims in 2022

In 2022, Dr. Hessler wrote 83 Medicare Part D claims. They cover 2 drugs, with $20,726 in total drug cost. In 2021, CMS named 62 claims across 2 drugs.

Part D claims, 202283
Drugs named by CMS2
Total drug cost$20,726

Dr. Hessler's most prescribed drugs by claims, 2022

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2021 to 2022

  • 2021
  • 2022
Claims for drugs CMS names
2021: 622022: 8334%

Drugs named by CMS: 2 in 2022, 2 in 2021.

See all prescribing by Dr. Hessler

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

Dr. Christine Sarena Hessler offers telehealth to Medicare patients

Dr. Hessler accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hessler as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Christine Sarena Hessler has 4 publications on record

Dmand AI links 4 papers to Dr. Hessler, published from 2013 to 2017. 2017 was the busiest year, with 2. Dr. Hessler's most frequent co-authors are John P. Betjemann, MD, Felicia C. Chow and Ari J. Green, MD.

Papers4
Years published2013 to 2017

Dr. Hessler's papers by year, 2013 to 2017

Dr. Hessler's most frequent co-authors

Recent publications by Dr. Hessler

See all 4 publications and co-authors

See who Dr. Hessler researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hessler works with, so you can find a warm path to the right neurologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Christine Sarena Hessler received $46 in industry payments from 2017 to 2024

CMS Open Payments shows 2 general payments to Dr. Hessler from 2 drug and device companies from 2017 to 2024. Food and beverage make up the largest share, 100% of the total. Ipsen Biopharmaceuticals, Inc paid the most, $24.

General payments to Dr. Hessler by program year, 2017 to 2024

Companies that paid Dr. Hessler the most, 2017 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Hessler

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Christine Sarena Hessler graduated from UCSF School of Medicine

Dr. Hessler graduated from UCSF School of Medicine in 2012.

  1. Medical schoolUCSF School of Medicine
  2. Board certified in neurologyAmerican Board of Psychiatry and Neurology

Source: Dmand AI Professional Profile Data

Dr. Christine Sarena Hessler accepts plans from 15 insurance carriers

Dr. Hessler is in network with 15 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Humana
  • Regence Health Plans
  • Aetna
  • +7 more carriersWith a free account

Plan types Dr. Hessler accepts, by number of carriers

  1. Medicare8
  2. PPO8
  3. HMO6
  4. POS4
  5. EPO3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Christine Sarena Hessler's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Christine Sarena Hessler

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. Christine Sarena Hessler's NPI number?

Dr. Christine Sarena Hessler's NPI number is 1134495880. It was assigned on March 27, 2012, and it is active in the NPI Registry.

What kind of doctor is Dr. Christine Sarena Hessler?

Dr. Christine Sarena Hessler is a neurologist in Simi Valley, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).

Where does Dr. Christine Sarena Hessler practice?

Dr. Hessler practices at 2975 N Sycamore Dr, Simi Valley, CA 93065. Dr. Hessler's primary practice is Adventist Health Simi Valley in Simi Valley, California, part of Adventist Health. Dmand AI also links Dr. Hessler to 4 medical groups, 3 group practices and clinics and 1 community health center.

What is Dr. Christine Sarena Hessler's office phone number?

The practice phone on file for Dr. Hessler is (805) 955-6000.

What is Dr. Christine Sarena Hessler's medical license number?

Dr. Hessler holds California license A128573, one of the licenses on file in 14 states.

Which states has Dr. Christine Sarena Hessler been licensed in?

Dmand AI has state licenses on file for Dr. Hessler in California (2014 to 2026), Delaware (2024 to 2027), New Mexico (2023 to 2027), Washington (2022 to 2027), Florida (2024 to 2026), Oklahoma (2024 to 2026), Colorado (2023 to 2025), Indiana (2022 to 2025), Michigan (2022 to 2025), Montana (2024 to 2025), New Hampshire (2023 to 2025), Oregon (2022 to 2025), Arkansas (2022 to 2024) and Texas (2022 to 2024).

Which hospitals is Dr. Christine Sarena Hessler affiliated with?

Dr. Hessler practices at Adventist Health Simi Valley in Simi Valley, California. Dr. Hessler is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights.

What medical group is Dr. Christine Sarena Hessler part of?

Dr. Hessler is linked to Ventura County Medical Center. Dmand AI links Dr. Hessler to 4 more medical groups.

Does Dr. Christine Sarena Hessler accept Medicare?

Yes. CMS data shows Dr. Hessler billed Medicare for 41 services in 2024, and Dr. Hessler accepts Medicare assignment.

Does Dr. Christine Sarena Hessler offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Hessler as offering telehealth services.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Christine Sarena Hessler see?

CMS counts 55 Medicare patients who saw Dr. Hessler in 2024, with an average age of 77.

Is Dr. Christine Sarena Hessler board certified?

Yes. Dr. Hessler is board certified in neurology by the American Board of Psychiatry and Neurology.

What services does Dr. Christine Sarena Hessler bill to Medicare?

In 2024, Dr. Hessler's most billed Medicare services were medicare service (G0427) and care management and other visits (99451).

Where did Dr. Christine Sarena Hessler go to medical school?

Dr. Hessler graduated from UCSF School of Medicine in 2012.

What drugs does Dr. Christine Sarena Hessler prescribe most?

In 2022 Medicare Part D data, Dr. Hessler's most prescribed drugs by claims were Atorvastatin Calcium and Eliquis.

Has Dr. Christine Sarena Hessler received payments from drug or device companies?

CMS Open Payments shows $46 in general payments to Dr. Hessler from 2 companies from 2017 to 2024. The largest total came from Ipsen Biopharmaceuticals, Inc.

How long has Dr. Christine Sarena Hessler been practicing?

Dr. Hessler graduated from medical school in 2012, 14 years ago.

Does Dr. Christine Sarena Hessler do research?

Dmand AI links 4 publications to Dr. Hessler, published from 2013 to 2017.

Who does Dr. Christine Sarena Hessler publish with?

Dr. Hessler's most frequent co-authors are John P. Betjemann, MD (1 shared paper), Felicia C. Chow (1 shared paper) and Ari J. Green, MD (1 shared paper).

What insurance does Dr. Christine Sarena Hessler accept?

Dr. Hessler is in network with 15 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

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