Thomas Guerrero-Garcia, M.D.
NPI 1689939993 · Hematology & Oncology Physician · The Woodlands, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Guerrero-Garcia, M.D. is a Hematology & Oncology Physician provider in The Woodlands, TX (NPI 1689939993).
Provider details
- NPI number
- 1689939993
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2019005326 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
730 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 407 | $135 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 185 | $91 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 74 | $169 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 32 | $125 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 32 | $162 |
Typical Medicare-allowed amounts for these services range $91–$169 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 57 | 24 |
| Prednisone | 54 | — |
| Dexamethasone | 49 | 17 |
| Abiraterone Acetate | 48 | — |
| Prochlorperazine Maleate | 47 | 29 |
| Olanzapine | 46 | 16 |
| Acyclovir | 45 | — |
| Lenalidomidebrand: Revlimid |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$790 across 40 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 450 Brookline AveBoston, MA 02215-5418Phone: (617) 632-2127Fax: (617) 632-6624
- 1000 W 10th StRolla, MO 65401-2905Phone: (573) 458-8899Fax: (573) 341-5611
- 1000 W 10th StRolla, MO 65401-2905Phone: (573) 364-9000Fax: (573) 202-2484
Registry dates
- Enumerated
- 2012-07-12
- Last updated
- 2026-01-19
- Certified
- 2026-01-19
Frequently asked questions
- What is Thomas Guerrero-Garcia's NPI number?
- Thomas Guerrero-Garcia's National Provider Identifier (NPI) is 1689939993, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Guerrero-Garcia's specialty?
- Thomas Guerrero-Garcia is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Guerrero-Garcia located?
- Thomas Guerrero-Garcia's practice location on file with NPPES is 17201 I 45 S, The Woodlands, TX 77385-3311.
- What is Thomas Guerrero-Garcia's phone number?
- The practice phone number listed in the NPPES registry for Thomas Guerrero-Garcia is (936) 270-2000.
- Does Thomas Guerrero-Garcia accept Medicare?
- Thomas Guerrero-Garcia is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Guerrero-Garcia's NPI active?
- Yes — Thomas Guerrero-Garcia's NPI (1689939993) is active in the NPPES registry as of the last update on 2026-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.