Maria Teresa Guillermo
NPI 1679210439 · Family Nurse Practitioner · Irving, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Teresa Guillermo is a Family Nurse Practitioner provider in Irving, TX (NPI 1679210439).
Provider details
- NPI number
- 1679210439
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 1076976 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
234 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 91 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 88 | $72 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 40 | $101 |
| Automated Urinalysis Test81003 | 15 | $2 |
Typical Medicare-allowed amounts for these services range $2–$101 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 66 | 32 |
| Gabapentin | 59 | 25 |
| Prednisone | 55 | 49 |
| Atorvastatin Calcium | 47 | 29 |
| Amlodipine Besylate | 44 | 28 |
| Meloxicam | 38 | 25 |
| Rosuvastatin Calcium | 34 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$503 across 24 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
Registry dates
- Enumerated
- 2022-05-13
- Last updated
- 2022-05-13
- Certified
- 2022-05-13
Frequently asked questions
- What is Maria Teresa Guillermo's NPI number?
- Maria Teresa Guillermo's National Provider Identifier (NPI) is 1679210439, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Teresa Guillermo's specialty?
- Maria Teresa Guillermo is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Maria Teresa Guillermo located?
- Maria Teresa Guillermo's practice location on file with NPPES is 8019 N Macarthur Blvd Apt 1073, Irving, TX 75063-6150.
- What is Maria Teresa Guillermo's phone number?
- The practice phone number listed in the NPPES registry for Maria Teresa Guillermo is (206) 853-6542.
- Does Maria Teresa Guillermo accept Medicare?
- Maria Teresa Guillermo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Teresa Guillermo's NPI active?
- Yes — Maria Teresa Guillermo's NPI (1679210439) is active in the NPPES registry as of the last update on 2022-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.