Guillermo Marquez Macias
Family Nurse Practitioner · Pasadena, TX
Guillermo Marquez Macias is a family nurse practitioner with a practice address in Pasadena, Texas, and NPI 1013547231, issued on Jan 16, 2020. Check the license (Texas AP144288, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Guillermo Marquez Macias
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- AP144288 TX
Self-reported in NPPES; status is on the state search - Practice location
- 908 Southmore Ave Ste 100, Pasadena, TX 77502
- Phone
- (713) 554-1091
- Enumerated
- Jan 16, 2020
- Record last updated
- Mar 16, 2026
- Medicare enrollment
- Enrolled (PECOS I20200409002211); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 21,242 in Texas → Look up another NPI →
Also registered at 908 Southmore Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Syed Hasan, M.D.Sports Medicine (Family Medicine) Physician1265534465
- Billy Marsh, APRNFamily Nurse Practitioner1669082723
Verify Guillermo Marquez Macias in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license AP144288Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family nurse practitioner in 2024
124 Medicare Part D claims for 82 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin21 claims
- Ibuprofen12 claims
- Fluticasone Propionate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $125.69
7 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Centerwell Senior Primary Care TX PAHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Guillermo Marquez Macias among 21,242 family nurse practitioner records in Texas
Guillermo Marquez Macias is one of 21,242 family nurse practitioner records with a practice address in Texas. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 59% of them.
- NPI issued2020 · 59% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2019 · median 2018 among the 11,286 with a school on file
- Record last updated2026 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 family nurse practitioner records list a practice address in Pasadena
They are 95 of the 1,245 NPPES records with a practice address in Pasadena, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in Pasadena → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Christopher Agatep, NP-CPasadena, TX 775021497347173
- Mina Aziz, NPPasadena, TX 775021811242886
- Krystal CastellanosPasadena, TX 775021356203822
- Marisol DiggsPasadena, TX 775021679353775
- David Garcia, NP-CPasadena, TX 775021902346570
- Billy Marsh, APRNPasadena, TX 775021669082723
- Humberto MartinezPasadena, TX 775021154962462
- Melody McClainPasadena, TX 775021851831853
Common questions
What is Guillermo Marquez Macias's NPI number?
Guillermo Marquez Macias's National Provider Identifier (NPI) is 1013547231, issued on Jan 16, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Guillermo Marquez Macias located?
The NPPES record lists a practice address at 908 Southmore Ave Ste 100, Pasadena, TX, 77502. Phone: (713) 554-1091. Providers update this record themselves, so call before visiting.
How can I verify Guillermo Marquez Macias's license?
NPPES lists Texas license number AP144288, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Guillermo Marquez Macias prescribe under Medicare Part D?
In 2024, Guillermo Marquez Macias had 124 Medicare Part D claims for 82 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.