John Isaac, M.B.B.S
Neonatal-Perinatal Medicine Physician · San Antonio, TX
John Isaac, M.B.B.S is a neonatal-perinatal medicine physician with a practice address in San Antonio, Texas, and NPI 1427001890, issued on May 18, 2006. Check the license (Texas K 6013, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Isaac
- Credential
- M.B.B.S
- Primary taxonomy
- Neonatal-Perinatal Medicine Physician 2080N0001X
- License number
- K 6013 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5430 Fredericksburg RD, San Antonio, TX 78229
- Phone
- (210) 541-8281
- Enumerated
- May 18, 2006
- Record last updated
- Nov 24, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (210) 541-9123
- Medicaid ID
- 2019994-01 TX
- Entity
- Type 1 · individual
8 nearest neonatal-perinatal medicine physician records → All 697 in Texas → Look up another NPI →
Also registered at 5430 Fredericksburg RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Penny Bennett, PHD, MSN, NNP-BC, FNNeonatal Nurse Practitioner1174899140
- Bethany Bland, RNRegistered Nurse1427219112
- Amber Coston, PA-CPhysician Assistant1902235849
- Derrick Crabtree, O.D.Optometrist1144633439
- Clarissa Deleon, M.D.Neonatal-Perinatal Medicine Physician1225266729
- Naomi Dennis, PNP-PCPediatric Nurse Practitioner1528662707
Verify John Isaac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K 6013Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Isaac among 697 neonatal-perinatal medicine physician records in Texas
John Isaac, M.B.B.S is one of 697 neonatal-perinatal medicine physician records with a practice address in Texas. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 56% newer
- In a Medicare fileNo · 16% of these records are
- In the CMS Doctors and Clinicians fileNo · 5% of these records are
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080N0001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neonatal-Perinatal Medicine Physician providers in Texas
There are 697 neonatal-perinatal medicine physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 697 in Texas → Every provider in San Antonio → Neonatal-Perinatal Medicine Physician nationwide →
The 8 neonatal-perinatal medicine physician records with the nearest ZIP codes
- Isabel Basaldu-Prado, MDSan Antonio, TX 782291942263926
- Anthony CorbetSan Antonio, TX 782291649228487
- Susan Dotzler, M.D.San Antonio, TX 782291497731814
- Darrah Fowler, NNPSan Antonio, TX 782291184688079
- San Juanita Garza-Cox, MDSan Antonio, TX 782291922056704
- Alejandro Gonzalez, MDSan Antonio, TX 782291780632042
- James Hilliard, MDSan Antonio, TX 782291780647008
- Blanca Molina, MDSan Antonio, TX 782291013965847
Common questions
What is John Isaac, M.B.B.S's NPI number?
John Isaac, M.B.B.S's National Provider Identifier (NPI) is 1427001890, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Isaac, M.B.B.S located?
The NPPES record lists a practice address at 5430 Fredericksburg RD, San Antonio, TX, 78229. Phone: (210) 541-8281. Providers update this record themselves, so call before visiting.
How can I verify John Isaac, M.B.B.S's license?
NPPES lists Texas license number K 6013, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.