Biomarkers, TumorCarcinoma, Transitional CellDiagnosis, Differential
Dr. Danielle E. Westfall, MD
NPI1891025896PAC ID8022296045
- Medicare services, 2024
- 3,130
- Medicare patients, 2024
- 767
- Publications
- 5
- MIPS score, 2024
- 94
- Hospital affiliations
- 1
- 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
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Dr. Danielle E. Westfall is a pathologist in Thousand Oaks, California
Dr. Westfall practices at Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare.
Dr. Westfall's NPI, 1891025896, was assigned on January 13, 2010. Dr. Westfall graduated from Ohio State College of Medicine in 2005. Dr. Westfall holds California license A98345.
NPI and contact details
- NPI
- 1891025896NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022296045
- NPI enumeration date
- January 13, 2010
- 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
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Danielle E. Westfall practices at Los Robles Regional Medical Center in Thousand Oaks, California
Dr. Westfall'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. Danielle E. Westfall is affiliated with 2 sites of care and 1 medical group
Dr. Westfall's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. The medical group on file is Thousand Oaks Pathology (TOPA Diagnostics). Dmand AI also links Dr. Westfall to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Danielle E. Westfall's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Westfall practices, 2 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 |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Danielle E. Westfall is one of 1,354 pathologists in California
Anatomic pathology and clinical pathology is Dr. Westfall's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Westfall is board certified in pathology - anatomic/pathology - clinical by the American Board of Pathology. Dr. Westfall is licensed in California.
Specialties and state licenses
- Anatomic pathology and clinical pathology, CaliforniaPrimary
Pathologists near Dr. Westfall
Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.
1,354pathologists in California
6pathologists in Thousand Oaks
4pathologists at Los Robles Regional Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Danielle E. Westfall billed Medicare for 3,130 services in 2024
CMS data shows 3,130 Medicare services from Dr. Westfall across 16 procedure codes in 2024, for 767 Medicare patients. Medicare paid $87,229 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 20243,130
Medicare patients767
Paid by Medicare$87,229
Procedure codes16
Dr. Westfall's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3,2062024: 3,1302%
Dr. Westfall compared with the California median for pathologists, 2024
- Dr. Westfall
- California median
- Medicare services
- 3,130vs 1,1532.7 times
- Medicare patients
- 767vs 44772% above
Medians across 1,094 pathologists in California with Dmand AI profiles that report each measure.
Dr. Westfall'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. Westfall and other pathologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Danielle E. Westfall treated 767 Medicare patients in 2024, average age 77
CMS counts 767 Medicare patients who saw Dr. Westfall in 2024. The largest group is 75 to 84, with 318 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.78, 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. Westfall's median patient age at 64, with 52% women.
Medicare patients, 2024767
Average age77
Average risk score1.78
Also on Medicaid12%
Dr. Westfall's Medicare patients by age, 2024
Dr. Westfall's Medicare patients by sex, 2024
- Women40753%
- Men36047%
Chronic conditions among Dr. Westfall's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease43%
- Atrial fibrillation35%
- Cancer34%
- Chronic kidney disease34%
- Diabetes34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Westfall's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Danielle E. Westfall scored 94 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 94 out of 100 for Dr. Westfall for performance year 2024, reported as part of a group. Dr. Westfall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Westfall's MIPS scores, performance year 2024
- 94of 100Final score
- 93.3of 100Quality
- 40of 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. Danielle E. Westfall has 5 publications on record
Dmand AI links 5 papers to Dr. Westfall. The most frequent topics are Immunohistochemistry, Urinary Bladder Neoplasms and Biomarkers, Tumor. Dr. Westfall's most frequent co-authors are Mahul B. Amin, MD, Xuemo Fan, MD and Allen M. Gown, MD.
Papers5
Topics Dr. Westfall writes about most
- Immunohistochemistry
- Urinary Bladder Neoplasms
- Biomarkers, Tumor
- Diagnosis, Differential
Dr. Westfall's most frequent co-authors
- Mahul B. Amin, MD2 shared papers
- Xuemo Fan, MD1 shared paper
- Allen M. Gown, MD1 shared paper
Recent publications by Dr. Westfall
AntibodiesEpithelioid CellsEvidence-Based Medicine
Biomarkers, TumorCarcinoma, Squamous CellCell Differentiation
Am J Clin Pathol
FluorescenceIn Situ Hybridization, FluorescencePathology, Molecular
See who Dr. Westfall researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Westfall works with, so you can find a warm path to the right pathologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Danielle E. Westfall received $123,954 in industry payments from 2017 to 2024
CMS Open Payments shows 16 general payments to Dr. Westfall from 6 drug and device companies from 2017 to 2024. Consulting fees make up the largest share, 98% of the total. Agilent Technologies, Inc. paid the most, $121,032.
General payments to Dr. Westfall by program year, 2017 to 2024
General payments to Dr. Westfall by kind, 2017 to 2024
$124Kin total
- Consulting fees$120,99098%
- Speaker and faculty fees$2,0002%
- Travel and lodging$5730%
- Food and beverage$3910%
Companies that paid Dr. Westfall the most, 2017 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Danielle E. Westfall graduated from Ohio State College of Medicine
Dr. Westfall graduated from Ohio State College of Medicine in 2005.
- Medical school
- Board certified in pathology - anatomic/pathology - clinical
Source: Dmand AI Professional Profile Data
Dr. Danielle E. Westfall accepts plans from 1 insurance carrier
Dr. Westfall is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Danielle E. Westfall'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) |
| 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. Danielle E. Westfall
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. Danielle E. Westfall's NPI number?
Dr. Danielle E. Westfall's NPI number is 1891025896. It was assigned on January 13, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Danielle E. Westfall?
Dr. Danielle E. Westfall is a pathologist in Thousand Oaks, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Danielle E. Westfall practice?
Dr. Westfall practices at 215 W Janss Rd, Thousand Oaks, CA 91360. Dr. Westfall's primary practice is Los Robles Regional Medical Center in Thousand Oaks, California, part of HCA Healthcare. Dmand AI also links Dr. Westfall to 1 group practice or clinic.
What is Dr. Danielle E. Westfall's office phone number?
The practice phone on file for Dr. Westfall is (805) 497-2727.
What is Dr. Danielle E. Westfall's medical license number?
Dr. Westfall holds California license A98345.
Which hospitals is Dr. Danielle E. Westfall affiliated with?
Dr. Westfall practices at Los Robles Regional Medical Center in Thousand Oaks, California.
What medical group is Dr. Danielle E. Westfall part of?
Dr. Westfall is linked to Thousand Oaks Pathology (TOPA Diagnostics).
Does Dr. Danielle E. Westfall accept Medicare?
Yes. CMS data shows Dr. Westfall billed Medicare for 3,130 services in 2024, and Dr. Westfall accepts Medicare assignment.
What is Dr. Danielle E. Westfall's MIPS score?
Dr. Westfall's MIPS final score for performance year 2024 is 94 out of 100, reported as part of a group.
How many Medicare patients does Dr. Danielle E. Westfall see?
CMS counts 767 Medicare patients who saw Dr. Westfall in 2024, with an average age of 77.
Show 8 more questionsShow fewer questions
Is Dr. Danielle E. Westfall board certified?
Yes. Dr. Westfall is board certified in pathology - anatomic/pathology - clinical by the American Board of Pathology.
What services does Dr. Danielle E. Westfall bill to Medicare?
In 2024, Dr. Westfall's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88341) and lab and pathology test (88312).
Where did Dr. Danielle E. Westfall go to medical school?
Dr. Westfall graduated from Ohio State College of Medicine in 2005.
Has Dr. Danielle E. Westfall received payments from drug or device companies?
CMS Open Payments shows $123,954 in general payments to Dr. Westfall from 6 companies from 2017 to 2024. The largest total came from Agilent Technologies, Inc.
How long has Dr. Danielle E. Westfall been practicing?
Dr. Westfall graduated from medical school in 2005, 21 years ago.
Does Dr. Danielle E. Westfall do research?
Dmand AI links 5 publications to Dr. Westfall.
Who does Dr. Danielle E. Westfall publish with?
Dr. Westfall's most frequent co-authors are Mahul B. Amin, MD (2 shared papers), Xuemo Fan, MD (1 shared paper) and Allen M. Gown, MD (1 shared paper).
What insurance does Dr. Danielle E. Westfall accept?
Dr. Westfall is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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