Stephen Alexander Mack, APRN-CNP; PMHNP-C
Family Nurse Practitioner · Katy, TX
Stephen Alexander Mack, APRN-CNP; PMHNP-C is a family nurse practitioner with a practice address in Katy, Texas, and NPI 1245352756, issued on Apr 4, 2007. Check the license (Texas AP128914, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Stephen Alexander Mack
- Credential
- APRN-CNP; PMHNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP128914 TX
9319 TX
Self-reported in NPPES; status is on the state search - Practice location
- 21613 Provincial Blvd, Katy, TX 77450
- Phone
- (713) 777-9900
- Enumerated
- Apr 4, 2007
- Record last updated
- Aug 31, 2023
- Fax
- (713) 777-9902
- Medicare enrollment
- Enrolled (PECOS I20151124000072); 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 21613 Provincial Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vikram Mehra, M.D.Psychiatry Physician1801848957
Verify Stephen Alexander Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license AP128914Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average family nurse practitioner in 2024
4,843 Medicare Part D claims for 464 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Diazepam349 claims
- Zolpidem Tartrate286 claims
- Duloxetine Hcl276 claims
- Trazodone Hcl233 claims
- Clonazepam228 claims
- Alprazolam223 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: $2,200.30
110 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. 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
- Doctors Express OF The Beaumont Area PABeaumont, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Alexander Mack among 21,242 family nurse practitioner records in Texas
Stephen Alexander Mack, APRN-CNP; PMHNP-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 2007, is newer than 6% of them.
- NPI issued2007 · 6% of these records are older, 91% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2015 · median 2018 among the 11,286 with a school on file
- Record last updated2023 · 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).
253 family nurse practitioner records list a practice address in Katy
They are 253 of the 5,078 NPPES records with a practice address in Katy, and 21,242 family nurse practitioner records in Texas.
All 21,242 in Texas → Every provider in Katy → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Isolde Aguhar, FNPKaty, TX 774501174886584
- Jose Arevalo, NPKaty, TX 774501396189015
- Lexie Barton, FNPKaty, TX 774501639502271
- Ramiro EspinosaKaty, TX 774501881988434
- Jessica Ives, NPKaty, TX 774501902153505
- Zehra Jaffer, FNP-CKaty, TX 774501346598026
- Erina Kanji, MSN-FNPKaty, TX 774501609218940
- Lynn Kelly, APNKaty, TX 774501437346160
Common questions
What is Stephen Alexander Mack, APRN-CNP; PMHNP-C's NPI number?
Stephen Alexander Mack, APRN-CNP; PMHNP-C's National Provider Identifier (NPI) is 1245352756, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Alexander Mack, APRN-CNP; PMHNP-C located?
The NPPES record lists a practice address at 21613 Provincial Blvd, Katy, TX, 77450. Phone: (713) 777-9900. Providers update this record themselves, so call before visiting.
How can I verify Stephen Alexander Mack, APRN-CNP; PMHNP-C's license?
NPPES lists Texas license number AP128914, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Stephen Alexander Mack, APRN-CNP; PMHNP-C prescribe under Medicare Part D?
In 2024, Stephen Alexander Mack, APRN-CNP; PMHNP-C had 4,843 Medicare Part D claims for 464 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.