Catherine Day Lewis, PA
- Medicare services, 2024
- 101
- Medicare patients, 2024
- 108
- Part D claims, 2024
- 654
- MIPS score, 2024
- 100
- Affiliated sites
- 2
- Practice address
- 632 W. Gibson Rd, Woodland, CA 95695
- Practice phone
- Call (530) 668-2632
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary & Specialty Care - Dignity Health Woodland Clinic
Mammography / Breast Imaging Center · Woodland, California
Find Catherine Lewis' professional email, personal email and mobile number
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Catherine Day Lewis is a physician assistant in Woodland, California
Catherine Lewis practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California.
Catherine Lewis' NPI, 1720124423, was assigned on January 29, 2007. Catherine Lewis holds California license 11994.
- NPI
- 1720124423NPI Registry (opens in a new tab)
- NPI enumeration date
- January 29, 2007
- NPI status
- Active
- Practice phone
- (530) 668-2632
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Catherine Day Lewis practices at Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California
Catherine Lewis' primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic, at 632 W. Gibson Rd, Woodland, CA 95695. The practice phone is (530) 668-2632.
- Primary & Specialty Care - Dignity Health Woodland Clinic632 W. Gibson Rd, Woodland, CA 95695Phone(530) 668-2632
Source: Dmand AI Affiliation Data
Catherine Day Lewis is affiliated with 2 sites of care and 1 medical group
Catherine Lewis' primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. The medical group on file is Mercy Medical Group. Dmand AI also links Catherine Lewis to 1 more group practice or clinic, named with a free account. Catherine Lewis' employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Catherine Day Lewis' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Catherine Lewis practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary & Specialty Care - Dignity Health Woodland Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Catherine Day Lewis is one of 11,482 physician assistants in California
Physician assistant is Catherine Lewis' primary specialty in the NPI Registry, under taxonomy code 363A00000X. Catherine Lewis is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Catherine Lewis is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists acute skin infection, anxiety, asthma, chronic kidney disease, chronic obstructive pulmonary disease (COPD), cold sores or genital herpes, conjunctivitis and contact dermatitis among the conditions Catherine Lewis treats.
Physician assistants near Catherine Lewis
Counts of physician assistants 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
Catherine Day Lewis billed Medicare for 101 services in 2024
CMS data shows 101 Medicare services from Catherine Lewis across 3 procedure codes in 2024, for 108 Medicare patients. Medicare paid $6,003 for them. Every service was in an office.
Catherine Lewis' Medicare services by type, 2024
- Office and hospital visits78
- Other services23
Catherine Lewis compared with the California median for physician assistants, 2024
- Catherine Lewis
- California median
- Medicare services
- 101vs 20450% below
- Medicare patients
- 108vs 105Close to median
- Part D claims
- 302vs 24324% above
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Catherine Lewis' 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 Catherine Lewis and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Catherine Day Lewis treated 108 Medicare patients in 2024, average age 74
CMS counts 108 Medicare patients who saw Catherine Lewis in 2024. The largest group is 65 to 74, with 53 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Catherine Lewis' median patient age at 71, with 60% women.
Catherine Lewis' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Catherine Lewis' Medicare patients by sex, 2024
- Women7569%
- Men3331%
Chronic conditions among Catherine Lewis' Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis56%
- Diabetes31%
- Mood disorders31%
- Chronic kidney disease27%
- Depression27%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Catherine Lewis' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Catherine Day Lewis wrote 654 Medicare Part D claims in 2024
In 2024, Catherine Lewis wrote 654 Medicare Part D claims for 194 patients. 87% of them were for generic drugs. CMS names the drug for 302 of them, across 15 drugs with 11 or more claims each, at $3,608 in total drug cost.
Catherine Lewis' Part D claims by kind of drug, 2024
- Generic566 claims87%
- Brand-name76 claims12%
- Other12 claims2%
Catherine Lewis' 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 Catherine Lewis' Part D claims, 2024
- Opioids2%12 of 654 claims
- Antibiotics3%17 of 654 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
Catherine Day Lewis scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Catherine Lewis for performance year 2024, reported through an alternative payment model (APM).
Catherine Lewis' MIPS scores, performance year 2024
- 100of 100Final score
- 86.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Catherine Day Lewis is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Catherine Day Lewis'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 |
| 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 Catherine Day Lewis
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Catherine Day Lewis' NPI number?
Catherine Day Lewis' NPI number is 1720124423. It was assigned on January 29, 2007, and it is active in the NPI Registry.
What does Catherine Day Lewis specialize in?
Catherine Day Lewis is a physician assistant in Woodland, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Catherine Day Lewis practice?
Catherine Lewis practices at 632 W. Gibson Rd, Woodland, CA 95695. Catherine Lewis' primary practice is Primary & Specialty Care - Dignity Health Woodland Clinic in Woodland, California. Dmand AI also links Catherine Lewis to 1 group practice or clinic.
What is Catherine Day Lewis' office phone number?
The practice phone on file for Catherine Lewis is (530) 668-2632.
What is Catherine Day Lewis' medical license number?
Catherine Lewis holds California license 11994.
What medical group is Catherine Day Lewis part of?
Catherine Lewis is linked to Mercy Medical Group.
Does Catherine Day Lewis accept Medicare?
Yes. CMS data shows Catherine Lewis billed Medicare for 101 services in 2024.
What is Catherine Day Lewis' MIPS score?
Catherine Lewis' MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Catherine Day Lewis see?
CMS counts 108 Medicare patients who saw Catherine Lewis in 2024, with an average age of 74.
Is Catherine Day Lewis board certified?
Yes. Catherine Lewis is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
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What services does Catherine Day Lewis bill to Medicare?
In 2024, Catherine Lewis' most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and medicare service (G0439).
What drugs does Catherine Day Lewis prescribe most?
In 2024 Medicare Part D data, Catherine Lewis' most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
How long has Catherine Day Lewis been practicing?
Catherine Lewis graduated from medical school in 1986, 40 years ago.
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