Dr. Denis Robert Westphal, MD
- Medicare services, 2024
- 2,151
- Medicare patients, 2024
- 401
- Part D claims, 2024
- 215
- MIPS score, 2024
- 81
- Hospital affiliations
- 2
- Practice address
- 1531 Esplanade, Chico, CA 95926
- Practice phone
- Call (530) 332-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Westphal's professional email, personal email and mobile number
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Dr. Denis Robert Westphal is a general surgeon in Chico, California
Dr. Westphal practices at Enloe Health in Chico, California, part of Enloe Health.
Dr. Westphal's NPI, 1285640243, was assigned on July 31, 2006. Dr. Westphal graduated from Loma Linda University School Of Medicine in 1982. Dr. Westphal holds California license G50664.
- NPI
- 1285640243NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123920691
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 332-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Denis Robert Westphal practices at Enloe Health in Chico, California
Dr. Westphal's primary practice is Enloe Health, at 1531 Esplanade, Chico, CA 95926 in Butte County. The practice phone is (530) 332-7300.
- Enloe Health1531 Esplanade, Chico, CA 95926 · Butte CountyPhone(530) 332-7300
Source: Dmand AI Affiliation Data
Dr. Denis Robert Westphal is affiliated with 4 sites of care and 1 medical group
Dr. Westphal's primary practice is Enloe Health in Chico, California, part of Enloe Health. Dr. Westphal is also affiliated with Oroville Hospital. The medical group on file is Chico Hospitalist Group. Dmand AI also links Dr. Westphal to 1 more physician office and 1 home health agency, 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. Denis Robert Westphal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Westphal practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Enloe Health | Available with a free account |
| +3 more affiliated sites | 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 Enloe Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Denis Robert Westphal is one of 2,926 general surgeons in California
Surgery is Dr. Westphal's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Westphal is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists removal of damaged skin or skin graft among the conditions Dr. Westphal treats.
General surgeons near Dr. Westphal
Counts of general surgeons 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. Denis Robert Westphal billed Medicare for 2,151 services in 2024
CMS data shows 2,151 Medicare services from Dr. Westphal across 9 procedure codes in 2024, for 401 Medicare patients. Medicare paid $96,403 for them. Every service was in an office.
Dr. Westphal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2612024: 1,09613%
- Surgery
- 2023: 8902024: 73418%
- Tests and treatments
- 2023: 1342024: 321140%
Dr. Westphal compared with the California median for general surgeons, 2024
- Dr. Westphal
- California median
- Medicare services
- 2,151vs 16613.0 times
- Medicare patients
- 401vs 1213.3 times
- Part D claims
- 144vs 344.2 times
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Westphal'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Denis Robert Westphal treated 401 Medicare patients in 2024, average age 74
CMS counts 401 Medicare patients who saw Dr. Westphal in 2024. The largest group is 65 to 74, with 154 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 2.80, 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. Westphal's median patient age at 72, with 48% women.
Dr. Westphal's Medicare patients by age, 2024
Dr. Westphal's Medicare patients by sex, 2024
- Women17042%
- Men23158%
Chronic conditions among Dr. Westphal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes45%
- Chronic kidney disease41%
- Heart failure36%
- Atrial fibrillation35%
- Mood disorders35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Westphal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women48%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Denis Robert Westphal wrote 215 Medicare Part D claims in 2024
In 2024, Dr. Westphal wrote 215 Medicare Part D claims for 108 patients. 95% of them were for generic drugs. CMS names the drug for 144 of them, across 6 drugs with 11 or more claims each, at $2,685 in total drug cost. In 2023, CMS named 186 claims across 8 drugs.
Dr. Westphal's Part D claims by kind of drug, 2024
- Generic204 claims95%
- Brand-name11 claims5%
Dr. Westphal'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. Westphal's Part D claims, 2024
- Antibiotics77%166 of 215 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: 1862024: 14423%
Drugs named by CMS: 6 in 2024, 8 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. Denis Robert Westphal scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Westphal for performance year 2024, reported as part of a group. Dr. Westphal accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 629 procedures of removal of tissue by Dr. Westphal, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Westphal's MIPS scores, performance year 2024
- 81of 100Final score
- 60.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Westphal ranks in Medicare procedure volume
- Removal of tissue
- 98th percentile629 procedures
- Removal of skin lesions
- 72nd percentile54 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Denis Robert Westphal received $1,986 in industry payments from 2016 to 2025
CMS Open Payments shows 37 general payments to Dr. Westphal from 13 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 91% of the total. Abbott Laboratories paid the most, $513.
General payments to Dr. Westphal by program year, 2016 to 2025
General payments to Dr. Westphal by kind, 2016 to 2025
- Food and beverage$1,80591%
- Travel and lodging$1829%
Companies that paid Dr. Westphal the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Denis Robert Westphal graduated from Loma Linda University School Of Medicine
Dr. Westphal graduated from Loma Linda University School Of Medicine in 1982.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Denis Robert Westphal accepts plans from 10 insurance carriers
Dr. Westphal is in network with 10 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Aspirus Health Plan
- +2 more carriersWith a free account
Plan types Dr. Westphal accepts, by number of carriers
- Medicare7
- PPO7
- POS6
- EPO4
- HMO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Denis Robert Westphal'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)Doctors and Clinicians Utilization Data (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 |
| 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. Denis Robert Westphal
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. Denis Robert Westphal's NPI number?
Dr. Denis Robert Westphal's NPI number is 1285640243. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Denis Robert Westphal?
Dr. Denis Robert Westphal is a general surgeon in Chico, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Denis Robert Westphal practice?
Dr. Westphal practices at 1531 Esplanade, Chico, CA 95926. Dr. Westphal's primary practice is Enloe Health in Chico, California, part of Enloe Health. Dmand AI also links Dr. Westphal to 1 physician office and 1 home health agency.
What is Dr. Denis Robert Westphal's office phone number?
The practice phone on file for Dr. Westphal is (530) 332-7300.
What is Dr. Denis Robert Westphal's medical license number?
Dr. Westphal holds California license G50664.
Which hospitals is Dr. Denis Robert Westphal affiliated with?
Dr. Westphal practices at Enloe Health in Chico, California. Dr. Westphal is also affiliated with Oroville Hospital.
What medical group is Dr. Denis Robert Westphal part of?
Dr. Westphal is linked to Chico Hospitalist Group.
Does Dr. Denis Robert Westphal accept Medicare?
Yes. CMS data shows Dr. Westphal billed Medicare for 2,151 services in 2024, and Dr. Westphal accepts Medicare assignment.
What is Dr. Denis Robert Westphal's MIPS score?
Dr. Westphal's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. Denis Robert Westphal see?
CMS counts 401 Medicare patients who saw Dr. Westphal in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Dr. Denis Robert Westphal bill to Medicare?
In 2024, Dr. Westphal's most billed Medicare services were surgery: skin and soft tissue (11042), office visit, established patient (99213) and office visit, established patient (99212).
Where did Dr. Denis Robert Westphal go to medical school?
Dr. Westphal graduated from Loma Linda University School Of Medicine in 1982.
What drugs does Dr. Denis Robert Westphal prescribe most?
In 2024 Medicare Part D data, Dr. Westphal's most prescribed drugs by claims were Cephalexin, Doxycycline Hyclate and Levofloxacin.
Has Dr. Denis Robert Westphal received payments from drug or device companies?
CMS Open Payments shows $1,986 in general payments to Dr. Westphal from 13 companies from 2016 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Denis Robert Westphal been practicing?
Dr. Westphal graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Denis Robert Westphal accept?
Dr. Westphal is in network with 10 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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