Shannon McAllister Gregorek, NP-C
Family Nurse Practitioner · Houston, TX
Shannon McAllister Gregorek, NP-C is a family nurse practitioner with a practice address in Houston, Texas, and NPI 1790929099, issued on Apr 30, 2009. Check the license (Texas 671422, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Shannon McAllister Gregorek
- Credential
- NP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 671422 TX
Self-reported in NPPES; status is on the state search - Practice location
- 9539 Huffmeister RD, Houston, TX 77095
- Phone
- (832) 593-8100
- Enumerated
- Apr 30, 2009
- Record last updated
- May 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (832) 593-8105
- Medicare enrollment
- Enrolled (PECOS I20090928000664); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 21,242 in Texas → Look up another NPI →
Also registered at 9539 Huffmeister RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Shannon McAllister Gregorek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 671422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family nurse practitioner in 2024
3,041 Medicare Part D claims for 259 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.
Most prescribed
- Rosuvastatin Calcium217 claims
- Levothyroxine Sodium181 claims
- Mounjaro180 claims
- Metformin Hcl149 claims
- Metformin Hcl Er148 claims
- Pioglitazone Hcl148 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: $2,677.30
138 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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
- Privia Medical Group Gulf Coast PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shannon McAllister Gregorek among 21,242 family nurse practitioner records in Texas
Shannon McAllister Gregorek, NP-C 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 2009, is newer than 11% of them.
- NPI issued2009 · 11% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2004 · median 2018 among the 11,286 with a school on file
- Record last updated2016 · 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).
2,588 family nurse practitioner records list a practice address in Houston
They are 2,588 of the 61,221 NPPES records with a practice address in Houston, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in Houston → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Sarah Aguilar, N.P.Houston, TX 770951801052402
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- Kindness Chukwukere, APRNHouston, TX 770951770949174
- Lauren Erdin, FNPHouston, TX 770951619360302
- Alexis Hayes, FNP-BCHouston, TX 770951164865564
- Ashley Hollins Pearson, FNP-BCHouston, TX 770951063855476
- Linda Lewis, FNP-CHouston, TX 770951730404369
- Diana Look, APRN, BCHouston, TX 770951417196130
Common questions
What is Shannon McAllister Gregorek, NP-C's NPI number?
Shannon McAllister Gregorek, NP-C's National Provider Identifier (NPI) is 1790929099, issued on Apr 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Shannon McAllister Gregorek, NP-C located?
The NPPES record lists a practice address at 9539 Huffmeister RD, Houston, TX, 77095. Phone: (832) 593-8100. Providers update this record themselves, so call before visiting.
How can I verify Shannon McAllister Gregorek, NP-C's license?
NPPES lists Texas license number 671422, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Shannon McAllister Gregorek, NP-C prescribe under Medicare Part D?
In 2024, Shannon McAllister Gregorek, NP-C had 3,041 Medicare Part D claims for 259 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.