Timothy Hammill, OD
- Part D claims, 2024
- 2,352
- Industry payments
- $224
- Affiliated sites
- 3
- Medical groups
- 3
- State license
- 1
- Practice address
- 2619 E Colorado Blvd, Pasadena, CA 91107
- Practice phone
- Call (626) 793-4168
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Eye Specialists Medical Group Inc
Pasadena, California
Find Timothy Hammill's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Timothy Hammill is an optometrist in Pasadena, California
Timothy Hammill practices at California Eye Specialists Medical Group Inc in Pasadena, California.
Timothy Hammill's NPI, 1457932097, was assigned on April 15, 2021. Timothy Hammill holds California license OPT35322-TLG.
- NPI
- 1457932097NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305215013
- NPI enumeration date
- April 15, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 793-4168
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 30
- Medical school graduation
- 2022
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Timothy Hammill practices at California Eye Specialists Medical Group Inc in Pasadena, California
Timothy Hammill's primary practice is California Eye Specialists Medical Group Inc, at 2619 E Colorado Blvd, Pasadena, CA 91107 in Los Angeles County. The practice phone is (626) 793-4168.
- California Eye Specialists Medical Group Inc2619 E Colorado Blvd, Pasadena, CA 91107 · Los Angeles CountyPhone(626) 793-4168
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Timothy Hammill is affiliated with 4 sites of care and 3 medical groups
Timothy Hammill's primary practice is California Eye Specialists Medical Group Inc in Pasadena, California. Dmand AI also links Timothy Hammill to 3 group practices and clinics and 3 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Timothy Hammill's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Timothy Hammill practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| California Eye Specialists Medical Group Inc | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Timothy Hammill is one of 7,206 optometrists in California
Optometrist is Timothy Hammill's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Timothy Hammill is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Timothy Hammill
Counts of optometrists 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 Hammill's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Timothy Hammill's median patient age at 71, with 58% women.
Timothy Hammill's 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
- Women58%
- Men41%
Source: Dmand AI Patient Panel Data
Timothy Hammill wrote 2,352 Medicare Part D claims in 2024
In 2024, Timothy Hammill wrote 2,352 Medicare Part D claims for 663 patients. 64% of them were for generic drugs.
Timothy Hammill's Part D claims by kind of drug, 2024
- Generic1,500 claims64%
- Brand-name852 claims36%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Timothy Hammill takes part in Medicare
Timothy Hammill accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
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Timothy Hammill received $224 in industry payments in 2025
CMS Open Payments shows 8 general payments to Timothy Hammill from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Mallinckrodt Hospital Products Inc. paid the most, $111.
Companies that paid Timothy Hammill the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Timothy Hammill'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Hammill
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 Hammill's NPI number?
Timothy Hammill's NPI number is 1457932097. It was assigned on April 15, 2021, and it is active in the NPI Registry.
What does Timothy Hammill specialize in?
Timothy Hammill is an optometrist in Pasadena, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Timothy Hammill practice?
Timothy Hammill practices at 2619 E Colorado Blvd, Pasadena, CA 91107. Timothy Hammill's primary practice is California Eye Specialists Medical Group Inc in Pasadena, California. Dmand AI also links Timothy Hammill to 3 group practices and clinics and 3 medical groups.
What is Timothy Hammill's office phone number?
The practice phone on file for Timothy Hammill is (626) 793-4168.
What is Timothy Hammill's medical license number?
Timothy Hammill holds California license OPT35322-TLG.
Does Timothy Hammill accept Medicare?
Yes. CMS lists Timothy Hammill as accepting Medicare assignment.
Has Timothy Hammill received payments from drug or device companies?
CMS Open Payments shows $224 in general payments to Timothy Hammill from 3 companies from 2025 to 2025. The largest total came from Mallinckrodt Hospital Products Inc.
How long has Timothy Hammill been practicing?
Timothy Hammill graduated from medical school in 2022, 4 years ago.
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