NPPES file of Aug 9, 2026

Christopher A. Masi, M.D.

Child & Adolescent Psychiatry Physician · Round Rock, TX

Christopher A. Masi, M.D. is a child & adolescent psychiatry physician with a practice address in Round Rock, Texas, and NPI 1053536128, issued on Apr 16, 2007. Check the license (Texas J4329, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1053536128
Name
Christopher A. Masi
Credential
M.D.
Primary taxonomy
Child & Adolescent Psychiatry Physician 2084P0804X
License number
J4329 TX
Self-reported in NPPES; status is on the state search
Practice location
600 Round Rock West Drive, Round Rock, TX 78681
Phone
(512) 502-5696
Enumerated
Apr 16, 2007
Record last updated
Nov 28, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(512) 502-5704
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest child & adolescent psychiatry physician records → All 482 in Texas → Look up another NPI →

Verify Christopher A. Masi in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license J4329    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

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57% fewer Medicare Part D claims than the average child & adolescent psychiatry physician in 2024

216 Medicare Part D claims for 14 beneficiaries, against an average of 504 among the 3,545 providers of this specialty who prescribed in Part D.

  1. Christopher Masi216
  2. Specialty average504

Most prescribed

  1. Lamotrigine21 claims
  2. Sertraline Hcl18 claims
  3. Escitalopram Oxalate16 claims
  4. Clonazepam12 claims
  5. Levetiracetam12 claims
  6. Lorazepam11 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.

Christopher A. Masi among 482 child & adolescent psychiatry physician records in Texas

Christopher A. Masi, M.D. is one of 482 child & adolescent psychiatry physician records with a practice address in Texas. 65% 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 35% of them.

  • NPI issued2007 · 35% of these records are older, 51% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 28% of these records are
  • Record last updated2012 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0804X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Child & Adolescent Psychiatry Physician providers in Texas

There are 482 child & adolescent psychiatry physician records in Texas.

All 482 in Texas → Every provider in Round Rock → Child & Adolescent Psychiatry Physician nationwide →

The 8 child & adolescent psychiatry physician records with the nearest ZIP codes

  1. Robert Cusser, DORound Rock, TX 786651902226095
  2. Brian Massey, M.D.Round Rock, TX 786651275619306
  3. David Coghe, MDRound Rock, TX 786641447237078
  4. Manasa Enja, M.D.Round Rock, TX 786641326400599
  5. Tin Wai Judy Koo, MDRound Rock, TX 786641174782049
  6. Shauna Reid, MDRound Rock, TX 786641396949533
  7. Jessica Reuben, M.D.Round Rock, TX 786641083974992
  8. Ali Ashai, M.D.Austin, TX 787011578098513

Common questions

What is Christopher A. Masi, M.D.'s NPI number?

Christopher A. Masi, M.D.'s National Provider Identifier (NPI) is 1053536128, issued on Apr 16, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Christopher A. Masi, M.D. located?

The NPPES record lists a practice address at 600 Round Rock West Drive, Round Rock, TX, 78681. Phone: (512) 502-5696. Providers update this record themselves, so call before visiting.

How can I verify Christopher A. Masi, M.D.'s license?

NPPES lists Texas license number J4329, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Christopher A. Masi, M.D. prescribe under Medicare Part D?

In 2024, Christopher A. Masi, M.D. had 216 Medicare Part D claims for 14 beneficiaries; the average among child & adolescent psychiatry physician prescribers was 504. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.