NPPES file of Aug 9, 2026

Theresa O. Castillo, MD

Obstetrics & Gynecology Physician · Houston, TX

Theresa O. Castillo, MD is an obstetrics & gynecology physician with a practice address in Houston, Texas, and NPI 1013067909, issued on Jan 11, 2007. Check the license (Texas M5087, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1013067909
Name
Theresa O. Castillo
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
M5087 TX
Self-reported in NPPES; status is on the state search
Practice location
13215 Dotson RD, Houston, TX 77070
Phone
(281) 444-3440
Enumerated
Jan 11, 2007
Record last updated
Jun 2, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(281) 444-4080
Medicaid ID
189081601 TX
Medicare enrollment
Enrolled (PECOS I20070705000254); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 3,524 in Texas → Look up another NPI →

Also registered at 13215 Dotson RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Dudley Baker, M.D.Obstetrics & Gynecology Physician1053364851
  2. Clare Bates, LPC-AProfessional Counselor1730997628
  3. Barbara Ellzey, WHNP-LPAObstetrics & Gynecology Nurse Practitioner1114180577
  4. Judith Greer, APNObstetrics & Gynecology Nurse Practitioner1710149133
  5. Howard Lewis, M.D.Radiation Oncology Physician1033108139
  6. Christopher McGuirk, M.D.Obstetrics & Gynecology Physician1508818915

Verify Theresa O. Castillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license M5087    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Obhg Texas Holdings PABaytown, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Theresa O. Castillo among 3,524 obstetrics & gynecology physician records in Texas

Theresa O. Castillo, MD is one of 3,524 obstetrics & gynecology physician records with a practice address in Texas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.

  • NPI issued2007 · 47% of these records are older, 44% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2002 · median 2005 among the 2,093 with a school on file
  • Record last updated2010 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Texas

There are 3,524 obstetrics & gynecology physician records in Texas.

All 3,524 in Texas → Every provider in Houston → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Dudley Baker, M.D.Houston, TX 770701053364851
  2. Michelle Barcio, M.D.Houston, TX 770701851394068
  3. Stephanie Bruce, M.D.Houston, TX 770701144300633
  4. Aeneid Chen, MDHouston, TX 770701407881295
  5. John Dogan, M.D.Houston, TX 770701497972913
  6. Nelly Heiman, MDHouston, TX 770701033326103
  7. Christopher McGuirk, M.D.Houston, TX 770701508818915
  8. Nahille Natour, M.D.Houston, TX 770701902821762

Common questions

What is Theresa O. Castillo, MD's NPI number?

Theresa O. Castillo, MD's National Provider Identifier (NPI) is 1013067909, issued on Jan 11, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Theresa O. Castillo, MD located?

The NPPES record lists a practice address at 13215 Dotson RD, Houston, TX, 77070. Phone: (281) 444-3440. Providers update this record themselves, so call before visiting.

How can I verify Theresa O. Castillo, MD's license?

NPPES lists Texas license number M5087, 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.