Mitchell Max Dullnig, M.D.
Internal Medicine Physician · Sisterdale, TX
Mitchell Max Dullnig, M.D. is an internal medicine physician with a practice address in Sisterdale, Texas, and NPI 1669600573, issued on Jun 30, 2009. Check the license (Texas HO313, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mitchell Max Dullnig
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- HO313 TX
Self-reported in NPPES; status is on the state search - Practice location
- 29 Dullnig Road, Sisterdale, TX 78006
- Phone
- (830) 324-6667
- Enumerated
- Jun 30, 2009
- Record last updated
- Jun 30, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (830) 324-6765
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Verify Mitchell Max Dullnig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license HO313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
11 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
Mitchell Max Dullnig among 9,175 internal medicine physician records in Texas
Mitchell Max Dullnig, M.D. is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 54% of them.
- NPI issued2009 · 54% of these records are older, 42% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2009 · 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 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Texas
There are 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Dunlap, M.D.Boerne, TX 780061881670677
- Terry Grover, D.O.Boerne, TX 780061548263759
- Auston Myers, M.D.Boerne, TX 780061770861742
- Milton Shaw, M.D.Boerne, TX 780061346203007
- Ronald Sims, M.D.Boerne, TX 780061295851202
- Rosaria Taimouri, MDBoerne, TX 780061306952296
- Rodrigo CrespoCastroville, TX 780091609854090
- Saleh Jaafar, MDCastroville, TX 780091679564587
Common questions
What is Mitchell Max Dullnig, M.D.'s NPI number?
Mitchell Max Dullnig, M.D.'s National Provider Identifier (NPI) is 1669600573, issued on Jun 30, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Max Dullnig, M.D. located?
The NPPES record lists a practice address at 29 Dullnig Road, Sisterdale, TX, 78006. Phone: (830) 324-6667. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Max Dullnig, M.D.'s license?
NPPES lists Texas license number HO313, 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 Mitchell Max Dullnig, M.D. prescribe under Medicare Part D?
In 2024, Mitchell Max Dullnig, M.D. had 11 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.