John W. Merrell, P.A.
Surgical Physician Assistant · Round Rock, TX
John W. Merrell, P.A. is a surgical physician assistant with a practice address in Round Rock, Texas, and NPI 1912961897, issued on Apr 17, 2006. Check the license (Texas PA13272, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John W. Merrell
- Credential
- P.A.
- Primary taxonomy
- Surgical Physician Assistant 363AS0400X
- License numbers
- PA13272 TX
A10176 LA
PA2181 TN
Self-reported in NPPES; status is on the state search - Practice location
- 302 University Blvd, Round Rock, TX 78665
- Phone
- (512) 509-0200
- Enumerated
- Apr 17, 2006
- Record last updated
- Jan 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (512) 218-6330
- Medicaid ID
- 1625795 LA
- Medicare enrollment
- Enrolled (PECOS I20190107001107); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgical physician assistant records → All 1,350 in Texas → Look up another NPI →
Also registered at 302 University Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Margaret Adams, WHNP - WHCWomen's Health Nurse Practitioner1134364078
- Megan Akers, WHNP-BCWomen's Health Nurse Practitioner1104397470
- Brian Anderson, D.O.Internal Medicine Physician1598886954
- Colleen BaslerOrthopedic Physical Therapist1538193768
- Mary Becker, FNPFamily Nurse Practitioner1285999177
- Jordan BeckhamPhysician Assistant1871454108
Verify John W. Merrell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license PA13272Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average surgical physician assistant in 2024
12 Medicare Part D claims, against an average of 304 among the 10,174 providers of this specialty who prescribed in Part D.
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: $51.10
2 payments; by number, the most common kind was food and beverage; the largest payer was Abiomed. The 7,578 providers of this specialty with any payment received $703.95 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
- Aspirus Medical Group, Inc.Weston, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John W. Merrell among 1,350 surgical physician assistant records in Texas
John W. Merrell, P.A. is one of 1,350 surgical physician assistant records with a practice address in Texas. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 80% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileYes · 46% of these records are
- Graduated1990 · median 2016 among the 617 with a school on file
- Record last updated2020 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AS0400X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgical Physician Assistant providers in Texas
There are 1,350 surgical physician assistant records in Texas.
All 1,350 in Texas → Every provider in Round Rock → Surgical Physician Assistant nationwide →
The 8 surgical physician assistant records with the nearest ZIP codes
- Elizabeth Barrett, PA-CRound Rock, TX 786651568973782
- Nidhi Dover, PA-CRound Rock, TX 786651215275094
- Joan GarzaRound Rock, TX 786651124502794
- Troy Griffith, MS, PA-CRound Rock, TX 786651871817064
- Natalie Lauryssen, PARound Rock, TX 786651811280324
- Dianna Martin, PHYSICIAN ASSISTANTRound Rock, TX 786651922115005
- Wendi Martin-Stewart, PARound Rock, TX 786651952399412
- Aren Paiva, PA-CRound Rock, TX 786651104946417
Common questions
What is John W. Merrell, P.A.'s NPI number?
John W. Merrell, P.A.'s National Provider Identifier (NPI) is 1912961897, issued on Apr 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John W. Merrell, P.A. located?
The NPPES record lists a practice address at 302 University Blvd, Round Rock, TX, 78665. Phone: (512) 509-0200. Providers update this record themselves, so call before visiting.
How can I verify John W. Merrell, P.A.'s license?
NPPES lists Texas license number PA13272, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does John W. Merrell, P.A. prescribe under Medicare Part D?
In 2024, John W. Merrell, P.A. had 12 Medicare Part D claims; the average among surgical physician assistant prescribers was 304. 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.