Timothy R. Day
- Medicare services, 2024
- 500
- Medicare patients, 2024
- 206
- Part D claims, 2024
- 2,658
- MIPS score, 2024
- 96
- Hospital affiliations
- 1
- Practice address
- 1000 Greenley Road, Sonora, CA 95370
- Practice phone
- Call (209) 536-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Timothy Day's professional email, personal email and mobile number
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Timothy R. Day is a physician assistant in Sonora, California
Timothy Day practices at Adventist Health Sonora in Sonora, California, part of Adventist Health.
Timothy Day's NPI, 1730196130, was assigned on August 1, 2006. Timothy Day holds California license PA010895.
- NPI
- 1730196130NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961461553
- NPI enumeration date
- August 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 536-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Timothy R. Day practices at Adventist Health Sonora in Sonora, California
Timothy Day's primary practice is Adventist Health Sonora, at 1000 Greenley Road, Sonora, CA 95370 in Tuolumne County. The practice phone is (209) 536-5000.
- Adventist Health Sonora1000 Greenley Road, Sonora, CA 95370 · Tuolumne CountyPhone(209) 536-5000
Source: Dmand AI Affiliation Data
Timothy R. Day is affiliated with 3 sites of care and 2 medical groups
Timothy Day's primary practice is Adventist Health Sonora in Sonora, California, part of Adventist Health. The medical group on file is Adventist Health Physicians Network. Dmand AI also links Timothy Day to 2 more home health agencies and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Timothy R. Day's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Timothy Day practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Sonora | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Timothy R. Day is one of 11,482 physician assistants in California
Physician assistant is Timothy Day's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Timothy Day is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Timothy Day is licensed in California.
Specialties and state licenses
- Physician assistant, CaliforniaPrimary
Clinical focus
Dmand AI lists acute mini-stroke (TIA), anxiety, arthritis, asthma, broken or dislocated ankle/ or foot, bronchitis, bursitis and carpal tunnel syndrome among the conditions Timothy Day treats.
Physician assistants near Timothy Day
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
Timothy R. Day billed Medicare for 500 services in 2024
CMS data shows 500 Medicare services from Timothy Day across 10 procedure codes in 2024, for 206 Medicare patients. Medicare paid $19,277 for them. Every service was in an office.
Timothy Day's Medicare services by type, 2024
- Office and hospital visits227
- Drugs given in the office120
- Surgery82
- Imaging71
Timothy Day compared with the California median for physician assistants, 2024
- Timothy Day
- California median
- Medicare services
- 500vs 2042.5 times
- Medicare patients
- 206vs 10596% above
- Part D claims
- 2,174vs 2438.9 times
Medians across 7,065 physician assistants in California with Dmand AI profiles that report each measure.
Timothy Day'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 Timothy Day and other physician assistants in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Timothy R. Day treated 206 Medicare patients in 2024, average age 75
CMS counts 206 Medicare patients who saw Timothy Day in 2024. The largest group is 65 to 74, with 106 patients. 75% of them have arthritis, and 75% have high blood pressure. 11% are also on Medicaid. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Timothy Day's median patient age at 69, with 50% women.
Timothy Day's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Timothy Day's Medicare patients by sex, 2024
- Women11857%
- Men8843%
Chronic conditions among Timothy Day's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol74%
- Anxiety21%
- Mood disorders21%
- Atrial fibrillation20%
- Cancer17%
- Depression17%
Share of Medicare patients with each condition. A patient can have several.
Timothy Day's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Timothy R. Day wrote 2,658 Medicare Part D claims in 2024
In 2024, Timothy Day wrote 2,658 Medicare Part D claims for 218 patients. 86% of them were for generic drugs. CMS names the drug for 2,174 of them, across 67 drugs with 11 or more claims each, at $147,936 in total drug cost.
Timothy Day's Part D claims by kind of drug, 2024
- Generic2,282 claims86%
- Brand-name365 claims14%
- Other11 claims0%
Timothy Day'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 Timothy Day's Part D claims, 2024
- Opioids3%88 of 2,658 claims
- Antibiotics1%18 of 2,658 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
Timothy R. Day scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Timothy Day for performance year 2024, reported through an alternative payment model (APM). Timothy Day accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Timothy Day's MIPS scores, performance year 2024
- 96of 100Final score
- 81.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
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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Timothy R. Day received $70 in industry payments in 2025
CMS Open Payments shows 4 general payments to Timothy Day from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Exact Sciences Corporation paid the most, $21.
Companies that paid Timothy Day the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Timothy R. Day is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Timothy R. Day'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) |
| Industry payments | Open Payments (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 Timothy R. Day
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Timothy R. Day's NPI number?
Timothy R. Day's NPI number is 1730196130. It was assigned on August 1, 2006, and it is active in the NPI Registry.
What does Timothy R. Day specialize in?
Timothy R. Day is a physician assistant in Sonora, California. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Timothy R. Day practice?
Timothy Day practices at 1000 Greenley Road, Sonora, CA 95370. Timothy Day's primary practice is Adventist Health Sonora in Sonora, California, part of Adventist Health. Dmand AI also links Timothy Day to 2 home health agencies and 1 medical group.
What is Timothy R. Day's office phone number?
The practice phone on file for Timothy Day is (209) 536-5000.
What is Timothy R. Day's medical license number?
Timothy Day holds California license PA010895.
Which hospitals is Timothy R. Day affiliated with?
Timothy Day practices at Adventist Health Sonora in Sonora, California.
What medical group is Timothy R. Day part of?
Timothy Day is linked to Adventist Health Physicians Network. Dmand AI links Timothy Day to 1 more medical group.
Does Timothy R. Day accept Medicare?
Yes. CMS data shows Timothy Day billed Medicare for 500 services in 2024, and Timothy Day accepts Medicare assignment.
What is Timothy R. Day's MIPS score?
Timothy Day's MIPS final score for performance year 2024 is 96 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Timothy R. Day see?
CMS counts 206 Medicare patients who saw Timothy Day in 2024, with an average age of 75.
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Is Timothy R. Day board certified?
Yes. Timothy Day is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Timothy R. Day bill to Medicare?
In 2024, Timothy Day's most billed Medicare services were office visit, established patient (99213), injected or infused drug (J0702) and surgery: bones and joints (20610).
What drugs does Timothy R. Day prescribe most?
In 2024 Medicare Part D data, Timothy Day's most prescribed drugs by claims were Amlodipine Besylate, Albuterol Sulfate Hfa and Lisinopril.
Has Timothy R. Day received payments from drug or device companies?
CMS Open Payments shows $70 in general payments to Timothy Day from 4 companies from 2025 to 2025. The largest total came from Exact Sciences Corporation.
How long has Timothy R. Day been practicing?
Timothy Day graduated from medical school in 1980, 46 years ago.
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