James Allen Zachary, M.D.
Infectious Disease Physician · Austin, TX
James Allen Zachary, M.D. is an infectious disease physician with a practice address in Austin, Texas, and NPI 1457350290, issued on Jul 14, 2005. Check the license (Texas M4989, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Allen Zachary
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- M4989 TX
017379 LA
Self-reported in NPPES; status is on the state search - Practice location
- 4614 N IH 35, Austin, TX 78751
- Phone
- (512) 978-9100
- Enumerated
- Jul 14, 2005
- Record last updated
- Jan 21, 2022
- Fax
- (512) 901-9751
- Medicare enrollment
- Enrolled (PECOS I20070112000171); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 674 in Texas → Look up another NPI →
Also registered at 4614 N IH 35
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carlin Boland, LCSWClinical Social Worker1891487310
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- Linda Dooley, MDInternal Medicine Physician1164460036
- Ursula Fernandez, LCSWClinical Social Worker1598485096
- Thomas Hull, APN FNPNurse Practitioner1881634897
- Derek Kerl, LCSWClinical Social Worker1578984589
Verify James Allen Zachary in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M4989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.1 times the Medicare Part D claims of the average infectious disease physician in 2024
6,269 Medicare Part D claims for 245 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims. 284 claims were for opioids.
Most prescribed
- Biktarvy558 claims
- Dovato326 claims
- Atorvastatin Calcium313 claims
- Tivicay272 claims
- Amlodipine Besylate199 claims
- Hydrocodone-Acetaminophen152 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.
Bills Medicare through one group practice
- Central Texas Community Health CentersAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Allen Zachary among 674 infectious disease physician records in Texas
James Allen Zachary, M.D. is one of 674 infectious disease physician records with a practice address in Texas. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1983 · median 2002 among the 510 with a school on file
- Record last updated2022 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Texas
There are 674 infectious disease physician records in Texas.
All 674 in Texas → Every provider in Austin → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Gayatri Nair, M.DAustin, TX 787491700082146
- Lisa Cornelius, M.D.Austin, TX 787561538129481
- Sarah Moore, MDAustin, TX 787581588831127
- Adrienne Gonzales, DOLakeway, TX 787381013477801
- Mary TheoktistoLakeway, TX 787381619358934
- Barry Hafkin, MDAustin, TX 787311205715372
- Elizabeth Revere, MDAustin, TX 787231760628820
- Shobhit KeswaniAustin, TX 787171427519073
Common questions
What is James Allen Zachary, M.D.'s NPI number?
James Allen Zachary, M.D.'s National Provider Identifier (NPI) is 1457350290, issued on Jul 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Allen Zachary, M.D. located?
The NPPES record lists a practice address at 4614 N IH 35, Austin, TX, 78751. Phone: (512) 978-9100. Providers update this record themselves, so call before visiting.
How can I verify James Allen Zachary, M.D.'s license?
NPPES lists Texas license number M4989, 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 James Allen Zachary, M.D. prescribe under Medicare Part D?
In 2024, James Allen Zachary, M.D. had 6,269 Medicare Part D claims for 245 beneficiaries; the average among infectious disease physician prescribers was 689. 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.