Rachel Laiteng Sum Mattern, FNP-C
Nurse Practitioner · Houston, TX
Rachel Laiteng Sum Mattern, FNP-C is a nurse practitioner with a practice address in Houston, Texas, and NPI 1699255364, issued on Aug 21, 2018. Check the license (Texas AP138552, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rachel Laiteng Sum Mattern
- Credential
- FNP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- AP138552 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Holcombe Blvd, Houston, TX 77030
- Phone
- (713) 792-6161
- Enumerated
- Aug 21, 2018
- Record last updated
- Jun 25, 2024
- Medicare enrollment
- Enrolled (PECOS I20200107000065); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,825 in Texas → Look up another NPI →
Also registered at 1515 Holcombe Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rachel Laiteng Sum Mattern in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license AP138552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average nurse practitioner in 2024
551 Medicare Part D claims for 113 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa56 claims
- Trelegy Ellipta44 claims
- Topiramate31 claims
- Breztri Aerosphere26 claims
- Breo Ellipta25 claims
- Prednisone25 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: $500.76
13 payments; by number, the most common kind was food and beverage; the largest payer was Alexion Pharmaceuticals, Inc. The 38,884 providers of this specialty with any payment received $791.64 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
- Physicians Referral ServiceHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachel Laiteng Sum Mattern among 4,825 nurse practitioner records in Texas
Rachel Laiteng Sum Mattern, FNP-C is one of 4,825 nurse practitioner records with a practice address in Texas. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 48% of them.
- NPI issued2018 · 48% of these records are older, 45% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2018 · median 2018 among the 2,618 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
784 nurse practitioner records list a practice address in Houston
They are 784 of the 61,221 NPPES records with a practice address in Houston, and 4,825 nurse practitioner records in Texas.
All 4,825 in Texas → Every provider in Houston → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
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- Janice Garza-Dennis, RN,ANP,AOCNPHouston, TX 770301659378016
- Carolyn Giveon, MS, RN, ANP, GNPHouston, TX 770301093719049
- Mary Halamicek, NPHouston, TX 770301609840339
- Marika Highberger, NPHouston, TX 770301790732691
- Tacharra Laury, RN, ACNPHouston, TX 770301295775179
Common questions
What is Rachel Laiteng Sum Mattern, FNP-C's NPI number?
Rachel Laiteng Sum Mattern, FNP-C's National Provider Identifier (NPI) is 1699255364, issued on Aug 21, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Laiteng Sum Mattern, FNP-C located?
The NPPES record lists a practice address at 1515 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 792-6161. Providers update this record themselves, so call before visiting.
How can I verify Rachel Laiteng Sum Mattern, FNP-C's license?
NPPES lists Texas license number AP138552, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Rachel Laiteng Sum Mattern, FNP-C prescribe under Medicare Part D?
In 2024, Rachel Laiteng Sum Mattern, FNP-C had 551 Medicare Part D claims for 113 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.