Gregory Mann Jackson, M.D.
Specialist · San Antonio, TX
Gregory Mann Jackson, M.D. is a specialist with a practice address in San Antonio, Texas, and NPI 1184738825, issued on Aug 19, 2006. Check the license (Texas F5584, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Mann Jackson
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- F5584 TX
Self-reported in NPPES; status is on the state search - Practice location
- 4220 Mccullough Ave, San Antonio, TX 78212
- Phone
- (210) 829-0700
- Enumerated
- Aug 19, 2006
- Record last updated
- Nov 19, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (210) 829-0714
- Medicare enrollment
- Enrolled (PECOS I20101202001087); accepts Medicare assignment
- Medical or professional school
- Baylor College Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,716 in Texas → Look up another NPI →
Also registered at 4220 Mccullough Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharon AckerRegistered Nurse1861369902
Verify Gregory Mann Jackson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license F5584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average specialist in 2024
3,800 Medicare Part D claims for 266 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 37 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium299 claims
- Levothyroxine Sodium190 claims
- Zolpidem Tartrate141 claims
- Losartan Potassium133 claims
- Alprazolam116 claims
- Azithromycin113 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.
Gregory Mann Jackson among 1,716 specialist records in Texas
Gregory Mann Jackson, M.D. is one of 1,716 specialist records with a practice address in Texas. 31% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 46% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileYes · 18% of these records are
- Graduated1978 · median 1989 among the 310 with a school on file
- Record last updated2010 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Texas
There are 1,716 specialist records in Texas.
All 1,716 in Texas → Every provider in San Antonio → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Salvador Baylan, MDSan Antonio, TX 782121003898628
- Deven Bhachawat, MDSan Antonio, TX 782121053338731
- Vivian Bucay, M.D.San Antonio, TX 782121821079930
- Leonard Duran, M.D.San Antonio, TX 782121144224809
- Philip Onghai, M.D.San Antonio, TX 782121861491284
- Domingo Padilla, Jr, M.D.San Antonio, TX 782121386633535
- Pedro Sepulveda, M.D.San Antonio, TX 782121407931108
- Douglas Stafford, LMTSan Antonio, TX 782121952595449
Common questions
What is Gregory Mann Jackson, M.D.'s NPI number?
Gregory Mann Jackson, M.D.'s National Provider Identifier (NPI) is 1184738825, issued on Aug 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mann Jackson, M.D. located?
The NPPES record lists a practice address at 4220 Mccullough Ave, San Antonio, TX, 78212. Phone: (210) 829-0700. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mann Jackson, M.D.'s license?
NPPES lists Texas license number F5584, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Mann Jackson, M.D. prescribe under Medicare Part D?
In 2024, Gregory Mann Jackson, M.D. had 3,800 Medicare Part D claims for 266 beneficiaries; the average among specialist prescribers was 1,380. 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.