Diane Z. Greiner, M.D.
Cardiovascular Disease Physician · San Antonio, TX
Diane Z. Greiner, M.D. is a cardiovascular disease physician with a practice address in San Antonio, Texas, and NPI 1568462885, issued on Jul 28, 2005. Check the license (Texas J6830, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Diane Z. Greiner
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- J6830 TX
Self-reported in NPPES; status is on the state search - Practice location
- 502 Madison Oak Dr, San Antonio, TX 78258
- Phone
- (210) 483-8883
- Enumerated
- Jul 28, 2005
- Record last updated
- Dec 28, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (210) 474-1740
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,603 in Texas → Look up another NPI →
Also registered at 502 Madison Oak Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Diane Z. Greiner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license J6830Check 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 cardiovascular disease physician in 2024
14 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Diane Z. Greiner among 1,603 cardiovascular disease physician records in Texas
Diane Z. Greiner, M.D. is one of 1,603 cardiovascular disease physician records with a practice address in Texas. 88% 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, 80% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2012 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Texas
There are 1,603 cardiovascular disease physician records in Texas.
All 1,603 in Texas → Every provider in San Antonio → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Umesh Arora, M.D.San Antonio, TX 782581275648529
- Lily BatesSan Antonio, TX 782581114313095
- Madhu Challapalli, MDSan Antonio, TX 782581609847029
- Mark Colligan, MDSan Antonio, TX 782581902998347
- Meeney Dhir, M.D.San Antonio, TX 782581962517201
- Joshua Durham, M.D.San Antonio, TX 782581689898819
- Radoslaw Kiesz, M.D.San Antonio, TX 782581710924675
- Gerald Koppes, MDSan Antonio, TX 782581922081900
Common questions
What is Diane Z. Greiner, M.D.'s NPI number?
Diane Z. Greiner, M.D.'s National Provider Identifier (NPI) is 1568462885, issued on Jul 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Diane Z. Greiner, M.D. located?
The NPPES record lists a practice address at 502 Madison Oak Dr, San Antonio, TX, 78258. Phone: (210) 483-8883. Providers update this record themselves, so call before visiting.
How can I verify Diane Z. Greiner, M.D.'s license?
NPPES lists Texas license number J6830, 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 Diane Z. Greiner, M.D. prescribe under Medicare Part D?
In 2024, Diane Z. Greiner, M.D. had 14 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. 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.