Michael A. Volz, M.D.
Allergy & Immunology (Internal Medicine) Physician · Austin, TX
Michael A. Volz, M.D. is an allergy & immunology (internal medicine) physician with a practice address in Austin, Texas, and NPI 1841225430, issued on Jul 11, 2006. Check the license (Texas U4125, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael A. Volz
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License numbers
- U4125 TX
29227 CO
04-25391 KS
72393 MN
Self-reported in NPPES; status is on the state search - Practice location
- 9835 N Lake Creek Pkwy, Austin, TX 78717
- Phone
- (832) 824-1000
- Enumerated
- Jul 11, 2006
- Record last updated
- May 7, 2024
- Medicaid IDs
- 01292275 CO
1841225430 TX
100168600B KS - Medicare enrollment
- Enrolled (PECOS I20230605001064); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1985
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 50 in Texas → Look up another NPI →
Also registered at 9835 N Lake Creek Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Oliver Aregullin, MDInterventional Cardiology Physician1275882599
- Aubrey Baker, PT, DPT, PCSPediatric Physical Therapist1326829748
- Allison Bautista, PNPPediatric Nurse Practitioner1134638232
- Sarah Bernstein, M.D.Neonatal-Perinatal Medicine Physician1568858785
Verify Michael A. Volz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license U4125Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
525 Medicare Part D claims for 94 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Montelukast Sodium119 claims
- Breo Ellipta38 claims
- Trelegy Ellipta31 claims
- Ceftriaxone27 claims
- Prednisone23 claims
- Cromolyn Sodium22 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: $2,851.45
6 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 321 providers of this specialty with any payment received $7,456.30 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
- Texas Childrens Physician GroupAustin, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael A. Volz among 50 allergy & immunology (internal medicine) physician records in Texas
Michael A. Volz, M.D. is one of 50 allergy & immunology (internal medicine) physician records with a practice address in Texas. 90% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1985 · median 2003 among the 38 with a school on file
- Record last updated2024 · 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 207RA0201X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in Texas
There are 50 allergy & immunology (internal medicine) physician records in Texas.
All 50 in Texas → Every provider in Austin → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Elisabeth Clayton, MDAustin, TX 787311538435532
- Narendra Punjabi, MDAustin, TX 787591295740751
- Karim Dhanani, MDRound Rock, TX 786651912106154
- Alan Boyar, M.D.San Antonio, TX 782451295728038
- James Quinn, M.D.Fort Sam Houston, TX 782341851325237
- Michael Adame, MDSan Antonio, TX 782291730742214
- Charles Calais, D.OSan Antonio, TX 782121831416197
- Goutam Shome, M.D.Lubbock, TX 794241962491191
Common questions
What is Michael A. Volz, M.D.'s NPI number?
Michael A. Volz, M.D.'s National Provider Identifier (NPI) is 1841225430, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael A. Volz, M.D. located?
The NPPES record lists a practice address at 9835 N Lake Creek Pkwy, Austin, TX, 78717. Phone: (832) 824-1000. Providers update this record themselves, so call before visiting.
How can I verify Michael A. Volz, M.D.'s license?
NPPES lists Texas license number U4125, 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 Michael A. Volz, M.D. prescribe under Medicare Part D?
In 2024, Michael A. Volz, M.D. had 525 Medicare Part D claims for 94 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.