Thomas J. Sierra, DDS
- Part D claims, 2024
- 109
- Industry payments
- $37
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 4221 Vista Rd, Pasadena, TX 77504-2141
- Practice phone
- Call (713) 943-2094
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Christopher Sierra
Dental practice · Pasadena, Texas
Find Thomas Sierra'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.
Thomas J. Sierra is a general practice dentistry in Pasadena, Texas
Thomas Sierra practices at Christopher Sierra in Pasadena, Texas.
Thomas Sierra's NPI, 1770596785, was assigned on August 14, 2006. Thomas Sierra holds Texas license 21757.
- NPI
- 1770596785NPI Registry (opens in a new tab)
- NPI enumeration date
- August 14, 2006
- NPI status
- Active
- Practice phone
- (713) 943-2094
- 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)
Thomas J. Sierra practices at Christopher Sierra in Pasadena, Texas
Thomas Sierra's primary practice is Christopher Sierra, at 4221 Vista Rd, Pasadena, TX 77504-2141. The practice phone is (713) 943-2094.
- Christopher Sierra4221 Vista Rd, Pasadena, TX 77504-2141Phone(713) 943-2094
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Thomas J. Sierra is affiliated with 1 site of care and 1 medical group
Thomas Sierra's primary practice is Christopher Sierra in Pasadena, Texas. Dmand AI also links Thomas Sierra 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 Thomas J. Sierra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Thomas Sierra practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Christopher Sierra | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Thomas J. Sierra is one of 4,300 general practice dentistrys in Texas
General practice is Thomas Sierra's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. Thomas Sierra is licensed in Texas.
Specialties and state licenses
- General practice dentistry, TexasPrimary
General practice dentistrys near Thomas Sierra
Counts of general practice dentistrys 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
Thomas J. Sierra's patients have a median age of 20
Across all payers, Dmand AI patient panel data puts Thomas Sierra's median patient age at 20, with 100% women.
Thomas Sierra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 20
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Thomas J. Sierra wrote 109 Medicare Part D claims in 2024
In 2024, Thomas Sierra wrote 109 Medicare Part D claims for 51 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Thomas Sierra's Part D claims, 2024
- Opioids10%11 of 109 claims
- Antibiotics61%66 of 109 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Thomas J. Sierra received $37 in industry payments in 2025
CMS Open Payments shows 1 general payment to Thomas Sierra from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Straumann USA LLC paid the most, $37.
Companies that paid Thomas Sierra 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 Thomas J. Sierra'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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 Thomas J. Sierra
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Thomas J. Sierra's NPI number?
Thomas J. Sierra's NPI number is 1770596785. It was assigned on August 14, 2006, and it is active in the NPI Registry.
What does Thomas J. Sierra specialize in?
Thomas J. Sierra is a general practice dentistry in Pasadena, Texas. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does Thomas J. Sierra practice?
Thomas Sierra practices at 4221 Vista Rd, Pasadena, TX 77504-2141. Thomas Sierra's primary practice is Christopher Sierra in Pasadena, Texas. Dmand AI also links Thomas Sierra to 1 medical group.
What is Thomas J. Sierra's office phone number?
The practice phone on file for Thomas Sierra is (713) 943-2094.
What is Thomas J. Sierra's medical license number?
Thomas Sierra holds Texas license 21757.
Has Thomas J. Sierra received payments from drug or device companies?
CMS Open Payments shows $37 in general payments to Thomas Sierra from 1 company from 2025 to 2025. The largest total came from Straumann USA LLC.
How long has Thomas J. Sierra been practicing?
Thomas Sierra's NPI was assigned in 2006.
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