Dr. David Thomas Hamilton, MD
- Medicare services, 2020
- 22
- Part D claims, 2024
- 54
- Industry payments
- $169
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 395 Oyster Point Blvd Ste 512 Suite 512, South San Francisco, CA 94080
- Practice phone
- Call (650) 826-2945
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Landmark Medical Of California - South San Francisco
Primary care practice · South San Francisco, California
Find Dr. Hamilton'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.
Dr. David Thomas Hamilton is a family medicine physician in El Segundo, California
Dr. Hamilton practices at Landmark Medical Of California - South San Francisco in South San Francisco, California.
Dr. Hamilton's NPI, 1942734082, was assigned on April 15, 2017. Dr. Hamilton holds California license A161487.
- NPI
- 1942734082NPI Registry (opens in a new tab)
- NPI enumeration date
- April 15, 2017
- NPI status
- Active
- Practice phone
- (650) 826-2945
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Thomas Hamilton practices in South San Francisco and El Segundo
Dr. Hamilton's primary practice is Landmark Medical of California - South San Francisco, at 395 Oyster Point Blvd Ste 512 Suite 512, South San Francisco, CA 94080. The practice phone is (650) 826-2945. The NPI Registry lists Dr. Hamilton's practice address as 2101 Rosecrans Ave, El Segundo, CA 90245.
- Landmark Medical of California - South San FranciscoPrimary395 Oyster Point Blvd Ste 512 Suite 512, South San Francisco, CA 94080Phone(650) 826-2945
- NPI Registry address2101 Rosecrans Ave, El Segundo, CA 90245 · Los Angeles CountyPhone(650) 826-2945
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. David Thomas Hamilton is affiliated with 1 site of care and 1 medical group
Dr. Hamilton's primary practice is Landmark Medical Of California - South San Francisco in South San Francisco, California. Dmand AI also links Dr. Hamilton to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. David Thomas Hamilton's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hamilton practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Landmark Medical Of California - South San Francisco | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Thomas Hamilton is one of 15,680 family medicine physicians in California
Family medicine is Dr. Hamilton's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Hamilton is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Hamilton
Counts of family medicine physicians 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. David Thomas Hamilton billed Medicare for 22 services in 2020
CMS data shows 22 Medicare services from Dr. Hamilton across 2 procedure codes in 2020. Medicare paid $1,710 for them.
Where Dr. Hamilton's Medicare services took place, 2020
- In an office1150%
- In a facility1150%
Dr. Hamilton compared with the California median for family medicine physicians, 2020
- Dr. Hamilton
- California median
- Medicare services
- 22vs 24691% below
- Part D claims
- 138vs 83383% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Hamilton's most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hamilton?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hamilton and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Thomas Hamilton's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Hamilton's median patient age at 74, with 13% women.
Dr. Hamilton's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women13%
- Men75%
Source: Dmand AI Patient Panel Data
Dr. David Thomas Hamilton wrote 54 Medicare Part D claims in 2024
In 2024, Dr. Hamilton wrote 54 Medicare Part D claims for 21 patients. 93% of them were for generic drugs. They cover 7 drugs, with $13,439 in total drug cost. In 2022, CMS named 78 claims across 5 drugs.
Dr. Hamilton's Part D claims by kind of drug, 2024
- Generic50 claims93%
- Brand-name and other4 claims7%
Dr. Hamilton's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 782023: 13877%
Drugs named by CMS: 7 in 2023, 5 in 2022.
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
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Dr. David Thomas Hamilton received $169 in industry payments from 2018 to 2025
CMS Open Payments shows 4 general payments to Dr. Hamilton from 4 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $84.
General payments to Dr. Hamilton by program year, 2018 to 2025
Companies that paid Dr. Hamilton the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. David Thomas Hamilton'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| 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 Dr. David Thomas Hamilton
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. David Thomas Hamilton's NPI number?
Dr. David Thomas Hamilton's NPI number is 1942734082. It was assigned on April 15, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. David Thomas Hamilton?
Dr. David Thomas Hamilton is a family medicine physician in El Segundo, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. David Thomas Hamilton practice?
Dr. Hamilton practices at 395 Oyster Point Blvd Ste 512 Suite 512, South San Francisco, CA 94080. Dr. Hamilton also practices at 2101 Rosecrans Ave, El Segundo, CA 90245. Dr. Hamilton's primary practice is Landmark Medical Of California - South San Francisco in South San Francisco, California. Dmand AI also links Dr. Hamilton to 1 medical group.
What is Dr. David Thomas Hamilton's office phone number?
The practice phone on file for Dr. Hamilton is (650) 826-2945.
What is Dr. David Thomas Hamilton's medical license number?
Dr. Hamilton holds California license A161487.
Does Dr. David Thomas Hamilton accept Medicare?
Yes. CMS data shows Dr. Hamilton billed Medicare for 22 services in 2020.
What services does Dr. David Thomas Hamilton bill to Medicare?
In 2020, Dr. Hamilton's most billed Medicare services were nursing facility care (99309) and care management and other visits (99497).
What drugs does Dr. David Thomas Hamilton prescribe most?
In 2023 Medicare Part D data, Dr. Hamilton's most prescribed drugs by claims were Pantoprazole Sodium, Gabapentin and Atorvastatin Calcium.
Has Dr. David Thomas Hamilton received payments from drug or device companies?
CMS Open Payments shows $169 in general payments to Dr. Hamilton from 4 companies from 2018 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Dr. David Thomas Hamilton been practicing?
Dr. Hamilton's NPI was assigned in 2017.
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